Anybody hear any updates on when the turbo for the supercharged ss will come out? I can't wait I hope it is soon.

twincharging is pretty cool and innovative, but still relatively new to the tuning world. it will take a lot to get some serious numbers from it and have it tuned correctly. if you are looking into the turbo world, take off the supercharger and put in a turbo.

It would be easier and cheaper to just trade in the cobalt and buy a 2006 WRX STI + a MBC.

forget about the supercharger and just replace it with a turbo alone youll make more power

forget about the supercharger and just replace it with a turbo alone youll make more power

^^^ The reason for my original statement.

basically, it's fine and all to DREAM about Bi-Charging. Mosrt of us in the real world see several problems with it.

1. Each Systems (Turbo or Supercharger), by themselves, can produde almost as much as both combined.
2. You will not add the extra weight to the car.
3. You will not end up with twice as many things going wrong.
4. You will not have to spend twice the money + on you Bi-Charged system.

Turbo or S/C, Pick one and do it properly.

There is nothing worse than doing two things well, when you could have mastered one.

It would be easier and cheaper to just trade in the cobalt and buy a 2006 WRX STI + a MBC.

What if he doesnt want a sedan?

and the cool thing about twincharging is you have BOTH!! while the other guy only has one.

What your saying is kinda like oh well the C6 Z06 is faster than a Lamborghini Gallardo so I'll get the Z06 instead. Hell no, you'd go with the Gallardo in a second just because.

What if he doesnt want a sedan?

and the cool thing about twincharging is you have BOTH!! while the other guy only has one.

What your saying is kinda like oh well the C6 Z06 is faster than a Lamborghini Gallardo so I'll get the Z06 instead. Hell no, you'd go with the Gallardo in a second just because.

thats like comparing apples to oranges. the point of twincharging is usually to go fast, not to look good or for status. but to each his own.

i dunno I like the twin charging idea in itself simply because it is unique in its own right ... making power is one thing but at the same time why have one power adder doing all the work when you can have two of them share the work

What if he doesnt want a sedan?



Buy the WRX Wagon...

twin charging on a show car would be great for custom points but on a real life daily driver or even racer for that matter its not a reasonable choice and also more money than its worth to do

i agree with price and complexity of install and management so for the most part it would be for bragging rights

i agree with price and complexity of install and management so for the most part it would be for bragging rights


yeah so all the peeps would want to "hang out with you".. Whatever..

Un-Sub

twincharging doesnt really do anything. it wont add any more power trust me. i thought it would add more power but it doesnt. as for a show thing it would be kool. i used to work on trucks with the twincharging and it really didnt add much. it adds a bit of power but not too noticeable unless its on a diesel

twincharging doesnt really do anything. it wont add any more power trust me. i thought it would add more power but it doesnt. as for a show thing it would be kool. i used to work on trucks with the twincharging and it really didnt add much. it adds a bit of power but not too noticeable unless its on a diesel

Well I agree with your stetement in principal,

But I'd like to point out that it is not complete.

It has been proven to be a very good power adder, but the level of design and custom work makes a system like this seem too complicated for too little gain over a cheaper easier Turbo or SC system.

supercharger makes power down low, turbo up high, mix them togeather and you have power all the time, thats why VW is doing it now on thier stock veihicles.

supercharger makes power down low, turbo up high, mix them togeather and you have power all the time, thats why VW is doing it now on thier stock veihicles.


Yeah but the resuslts I've seen aren't all that great, at least what I would have expected for them after doing all the engineering. there is a post on here somewhere about VW doing that, it wasn't that great.

My favorite bi-charging question to screw with peoples' minds...

If you have a Blower blowing 10PSI, and a turbocharger sucking out 10PSI, shouldn't the net be 0PSI? lol

But in reality, what WOULD the end result be?

Yeah but the resuslts I've seen aren't all that great, at least what I would have expected for them after doing all the engineering. there is a post on here somewhere about VW doing that, it wasn't that great.

My favorite bi-charging question to screw with peoples' minds...

If you have a Blower blowing 10PSI, and a turbocharger sucking out 10PSI, shouldn't the net be 0PSI? lol

But in reality, what WOULD the end result be?

Supercharger runs on intake
Turbo runs on exhaust. they do not cancel eachother out since they run on two opposite things. i personally will be doing the twincharge. i will be helping Hahn racecraft prototype the cobalt ss. my car if still on schedule will be in their shop for 2 days in about a month. on 6psi out of the turbo on a completely stock cobalt ss will be doing 400 whp. i am 80 whp over stock right now. i will have diamond forged pistons also. i plan on turning boost up to 12-15 and running 104-110 octane for a nice 500whp.....ill let everyone know when it happens

thats like comparing apples to oranges. the point of twincharging is usually to go fast, not to look good or for status. but to each his own.

If you're twin-charging for performance, you need to just stop in your tracks.

Forcing more air to your supercharger won't make it spin faster because it relys on your engine crankshaft pulley and crankshaft speeds (RPMS) to make power. So basically, you're throwing a ton of air at a brickwall that is missing a brick. This missing brick is your only benefit because you're actually bringing more air for the supercharger to flow but it's not as effective as people think. If your supercharger is spinning in 7 PSI of boost, and you're turbocharger is spooling 10 PSI of boost, you're essentially making about 7 PSI of boost into your motor.

supercharger makes power down low, turbo up high, mix them togeather and you have power all the time, thats why VW is doing it now on thier stock veihicles.

Who ever told you this, you need to hit them in the back of the head.

I'll try to put this simply...turbochargers come in all different sizes, trims and styles...they don't all operate the same as far as spool time, efficiency and overall power. You have turbos that could be at 10 PSI faster than your supercharger and make more power. Saying that superchargers give better low end and turbos give better high end is wrong. The spool time of a turbocharger relys on:

1. Size of the turbo (mainly the turbine for how fast it spools)
2. The amount of exhaust flow your motor is pushing

As far as VW making twin charged STOCK cars...I've never heard of this and if they did do this, it's the dumbest idea VW has ever had.

If you have a Blower blowing 10PSI, and a turbocharger sucking out 10PSI, shouldn't the net be 0PSI? lol


No.

First of all, your thinking of how turbochargers and superchargers work is totally wrong...not flaming but I'll try and explain it to you.

A supercharger (roots style) is belt driven off your crank pulley. As the crank pulley spins, the supercharger pulley spins and turns the blades in the supercharger to force air into the intake manifold and into the motor.

Now a turbocharger runs off the exhaust flow. Basically, as the exhaust is leaving the motor, it travels into one side of the turbo called the exhaust housing. Inside the exhaust housing is a turbine. As the turbine spins, it spins a wheel on the other side of the turbo called the compressor housing. As the wheel spins inside the compressor housing, it compresses air and sends it traveling towards your intake system. The exhaust that spins the turbine, it just travels through the rest of your exhaust system.

With that explained, a turbo doesn't suck in anything...it compresses and a supercharger pushes air.

Now with that said...refer back to my previous statement:

If your supercharger is spinning in 7 PSI of boost, and you're turbocharger is spooling 10 PSI of boost, you're essentially making about 7 PSI of boost into your motor.

The VW way of twin charging isn't the same as the way we would do it.

The VW way will us a supercharger for low end and then shut it off and use the turbo for the high end. They don't depend on each other as a path to the intake either. I am not say it's not any less of a bad idea, but it's not exactly the same.

As for neagating the advantaging pressuzing the air entering the Eaton this doesn't seem to be 100% apparent to me. The eaton doesn't compress air at all, it just moves it from point A to B. As air gathers into point B it builds up pressure. So if the eaton is moving air at 14.7 PSI or 21PSI I don't think it cares. I do agree that it can't do it at 100% efficency.

I also agree it is a lot of tuning but I think it's a cool idea worth the time if someone wanted to pursure it. My plan is to go turbo (only) and in the coming years.

I have heard of gutting the eaton and removing the rotors and using it as a convient intake manifold for boost, since we have the aftercooler inline I think it's a cool idea.

i agree with price and complexity of install and management so for the most part it would be for bragging rights

i wouldnt invest that much just for bragging rights lol

The real reason we are going to twincharging is because we dont whant to have to make custom intake manfolds just to turbo the car. So why not just turbo it as it sits? if it works?

The real reason we are going to twincharging is because we dont whant to have to make custom intake manfolds just to turbo the car. So why not just turbo it as it sits? if it works?

Well that's not even necessary to do...

You could easily take intake manifold from a 2.2 base model and have it work fine.

The platic intake manfold would be pointless because you would push the limit of it right off the back.

The platic intake manfold would be pointless because you would push the limit of it right off the back.

How so? He's going to be pushing 400 HP?

You have these choices:

1. Stock 2.2 ECOTEC manifold
2. Stock 2.0 Saab Manifold (alluminum)
3. GM Performance Racing Manifold (log style)

Anybody hear any updates on when the turbo for the supercharged ss will come out? I can't wait I hope it is soon.

the 2008 cobalt is going to be turbo-ed. all you people can say what you want but watch when it comes out.

Twincharging was used on detroit Desils, I drove one and I must say it was a blast hearing the blower whine a second before the hiss of the turbo drowned otu the straight pipe exhaust then hisses loud enough to scare deer a quarter mile away. BUt yea when it broke down we sold that truck. Twinchargin is complex, yes. It is new and it has reliaility issues of course. THe benifets arent' that great. BUt if you were to make it in paralell like some t-t systems are on drag desils. (Dodge pickups wiht twins putting out nearly 80PSI) Then honestly all you have to do is think "hmm I'm putting 7lbs wiht the turbo and 18 lbs with the SC, so that's 25lbs of pressure" and you'd be right. Since your blower will be constantly putting a set ammount of boost into the engine all you have to do is adjust the turbo's waistgate to increase or decrease boost. A simple boost controler would be all it takes. But as said before complexity will kill you.


ALl in all I am interested on teh feasibilty of it on a small engine but I wouldnt' do it myself because it will cost money to set it up. Money I'd rather spend on a proven way to go faster.

Twincharging was used on detroit Desils, I drove one and I must say it was a blast hearing the blower whine a second before the hiss of the turbo drowned otu the straight pipe exhaust then hisses loud enough to scare deer a quarter mile away. BUt yea when it broke down we sold that truck. Twinchargin is complex, yes. It is new and it has reliaility issues of course. THe benifets arent' that great. BUt if you were to make it in paralell like some t-t systems are on drag desils. (Dodge pickups wiht twins putting out nearly 80PSI) Then honestly all you have to do is think "hmm I'm putting 7lbs wiht the turbo and 18 lbs with the SC, so that's 25lbs of pressure" and you'd be right. Since your blower will be constantly putting a set ammount of boost into the engine all you have to do is adjust the turbo's waistgate to increase or decrease boost. A simple boost controler would be all it takes. But as said before complexity will kill you.


ALl in all I am interested on teh feasibilty of it on a small engine but I wouldnt' do it myself because it will cost money to set it up. Money I'd rather spend on a proven way to go faster.

I'm sorry but your 7 + 18 theory isn't correct.

No matter how much boost you're throwing at the supercharger, it's still only going to spin at a certain rate of speed because it's dependant of the crank shafts speed (ultimately). Throwing 7 pounds of compressed air into a supercharger that is mechanically only going to spin at a rate to push and create a certain amount of boost into your manifold. Throwing compressed air into the supercharger might help as far as bringing constant airflow into the supercharger but it won't increase your boost level that is actually entering your motor. Your supercharger is ultimately your restrictor and you just spent $3,000 (hypothetically) on a turbocharger setup that isn't doing you that much good.

Overall, either take the supercharger off or upgrade the pulley if you want some more power.

Just a note on this subject.

Twincharge has been around for years in Japan.

So no it's not new to the tuning world. Car Makers have been making twin charge cars for years we just never get to see any of them this side of the boarder. :(

I'm sorry but your 7 + 18 theory isn't correct.

No matter how much boost you're throwing at the supercharger, it's still only going to spin at a certain rate of speed because it's dependant of the crank shafts speed (ultimately). Throwing 7 pounds of compressed air into a supercharger that is mechanically only going to spin at a rate to push and create a certain amount of boost into your manifold. Throwing compressed air into the supercharger might help as far as bringing constant airflow into the supercharger but it won't increase your boost level that is actually entering your motor. Your supercharger is ultimately your restrictor and you just spent $3,000 (hypothetically) on a turbocharger setup that isn't doing you that much good.

Overall, either take the supercharger off or upgrade the pulley if you want some more power.


Bah your right, I was thinking on supercharger first, then the Turbo. In which that case it would work just fine cause the turbo can spin freely to make more HP and you use the SC like a pull truck on a bon salt flats car to get a huge ass compressor spinning.

Bah your right, I was thinking on supercharger first, then the Turbo. In which that case it would work just fine cause the turbo can spin freely to make more HP and you use the SC like a pull truck on a bon salt flats car to get a huge ass compressor spinning.

I don't understand how that would physically work...sorry, I'm just confussed.

I don't understand how that would physically work...sorry, I'm just confussed.

i think he means using the supercharger to spool the turbo quicker. or something, lol.

i think he means using the supercharger to spool the turbo quicker. or something, lol.

I understand that but how would that physically work. Remember, the exhaust drives the turbo, the supercharger is belt driven and has to sit on top of your intake manifold. I don't know.

I understand that but how would that physically work. Remember, the exhaust drives the turbo, the supercharger is belt driven and has to sit on top of your intake manifold. I don't know.

well... if the supercharger is forcing more air into the engine then wouldn't more exhaust come out? making it possible to spool a larger turbo faster? that sounds good in theory to me, but then i can't graps the turbo feeding the blower concept.

well... if the supercharger is forcing more air into the engine then wouldn't more exhaust come out? making it possible to spool a larger turbo faster? that sounds good in theory to me, but then i can't graps the turbo feeding the blower concept.

Well he's trying to say the total opposite of that.

And the whole idea of "the blower spools the bigger turbo" is just kind of a waste in my opinion. An average T3/T4 can support the power ranges of 350-400 HP without a problem...I spool that size turbo now fine, so what's the point of getting a huge turbo for? It's not like majority of us have built motors.

i know a guy who twin charged a sunfire.

killed his engine and clutch pretty fast but that thing ran like snot

i know a guy who twin charged a sunfire.

killed his engine and clutch pretty fast but that thing ran like snot

Let me guess...

Blue Sunfire with Body kit? He's on the JBO right?

Let me guess...

Blue Sunfire with Body kit? He's on the JBO right?

hah yea but i know him off beyond.ca

hah yea but i know him off beyond.ca

I think his name is Josh...

Yeah I remember when he was starting that setup, I never said anything to him but man what a pointless thing to do in all reality.

Well he's trying to say the total opposite of that.

And the whole idea of "the blower spools the bigger turbo" is just kind of a waste in my opinion. An average T3/T4 can support the power ranges of 350-400 HP without a problem...I spool that size turbo now fine, so what's the point of getting a huge turbo for? It's not like majority of us have built motors.

that's a very good point. i just want a twincharged kit to come out so that i can have a turbo without feeling like buying this car was useless by taking off the blower.

that's a very good point. i just want a twincharged kit to come out so that i can have a turbo without feeling like buying this car was useless by taking off the blower.

Well you could always sell your S/C and make a profit lol

but in seriousness, there is no real reason to stay twin charged.

The point of twincharging is to run a huge ass turbo with no lag, something like a 76 trim. Its not to get more horsepower or anything like that. Its to achive your power at a faster rate. By buddies 2.2eco with a 65 trim T3/T4 hybrid only fully spools at 3500-3750RPM, thats half your gear right there. Think of how long a 2.0L engine would take to fully spool a T4 76 trim turbo. Now imagine spinning that T4 76 trim with no lag what so ever, feels good right. Thats what twincharging is about.

As for Josh, he should have done it the right way and build his engine. He tried twincharging a stock LD9 (not gm's greatest motor) what else do you expect. It wasn't because it was twinchaged, he was just pushing crazy amounts of boost into an unbuild enigne. Would have happend whether it was twincharged or just turboed.

The point of twincharging is to run a huge ass turbo with no lag, something like a 76 trim. Its not to get more horsepower or anything like that. Its to achive your power at a faster rate. By buddies 2.2eco with a 65 trim T3/T4 hybrid only fully spools at 3500-3750RPM, thats half your gear right there. Think of how long a 2.0L engine would take to fully spool a T4 76 trim turbo. Now imagine spinning that T4 76 trim with no lag what so ever, feels good right. Thats what twincharging is about.

As for Josh, he should have done it the right way and build his engine. He tried twincharging a stock LD9 (not gm's greatest motor) what else do you expect. It wasn't because it was twinchaged, he was just pushing crazy amounts of boost into an unbuild enigne. Would have happend whether it was twincharged or just turboed.

I get what you're trying to say but some of the things you're saying is skewed a bit...

Your friend shouldn't have that big of a turbo if he feels that it's not spooling fast enough for him. Fact is, a 65 Trim turbo on a stock 2.2 ecotec motor is just too big and not necessary. You're talking about a turbo that can provide enough CFM for 400+ HP but like you said, might take too long and make his powerband smaller.

Ok now...having a T4 76 Trim turbo is REALLY not neccessary to have, I don't care how fast you can spool it. You do realize how big that is right?

To get down to the nitty gritty...twin charging won't be doing what you expect it to do. Even if you could spool a bigger turbo, your supercharger is your restrictor...period. No matter how much PSI of boost from your turbo you throw at it, the supercharger will spin at the same rate because it's belt driven.

Also, this idea of your supercharger making you be able to spin something as huge as a T4 is a bit stretched. First of all, our cylinder head ports are only so big...compared to other 4 cylinders, we are on the small side. Fact is, you will have trouble spooling something as big as a T4 because of this. You'll have a stronger exhaust velocity (energy) but the amount of exhaust gasses coming out at one time isn't that great to where you think you will spin something so big so fast. No matter what, you'll need RPMs to build boost with a supercharger or a turbo.

Listen, if you guys are worried about turbo lag, match the turbo to the motor properly. Bigger isn't always better. Even if you could have a T4 turbo on your motor, how much horsepower are you seriously looking to run? You're talking about a turbo that can support up to 600+ HP when majority of the members here won't even reach the 350 WHP mark...plainly, it's over doing things. It's kind of like buying a Corvette when you just need a grocery getter.

i just have 1 thing to say...... Do any of you think hahn would be wasting their time with a twin charge system if it was not going to net that much of a gain? come on? by the way the have already released an announcement that they hit the 400 hp mark with the twincharge system.

i just have 1 thing to say...... Do any of you think hahn would be wasting their time with a twin charge system if it was not going to net that much of a gain? come on? by the way the have already released an announcement that they hit the 400 hp mark with the twincharge system.

Hahn did it for their SEMA car

As far as it going through production, didn't hear it was. They must have done something cause 400 HP on a stock LSJ motor doesn't sound right to me.

NJHK is right, a smaller turbo would realistically create a much more effective turbo setup. no doubt there will still be lag, but it wont be as drastic.

a T3 would work out nicely, T4 is WWAAAYY to big lol

It would be easier and cheaper to just trade in the cobalt and buy a 2006 WRX STI + a MBC.

so I see you've gotten into the good crack, bring some to the house party

NJHK is right, a smaller turbo would realistically create a much more effective turbo setup. no doubt there will still be lag, but it wont be as drastic.

a T3 would work out nicely, T4 is WWAAAYY to big lol

Lag might not even be an issue.

Also, I want to say that some people talk about lag but I think they are confussing lag with other things. Building boost and lag are 2 different things. Lag usually is a delay in boost reaction...example, if you have a huge turbo on and you're set at 10 psi and it stays at 3 psi for majority of the powerband then all of a sudden shoots up to 10. Building boost is different...you can see a steady climb in boost.

I think people expect more from turbochargers when superchargers typically build boost as fast as or slower than turbochargers (assuming the turbocharger is properly matched to the motor).

Just thought i'd throw that out there.

Don't get me wrong a t4 is a bit big, but also for some people 350whp is not going to cut it. There a few people on the site, and my-self will be one of them, building thier engines to hold over the 450hp the stock engine is supposed to handle. As long as everything go to plan my car will hopefully be in the garage for the winter getting the enigne torn apart and rebuilt. To hit 500+ hp will be tough, either twincharging or mounting a new blower (twin screw) would be sufficent but both will be expensive.

Now i know the question of for that much hp why not buy something faster out of the box, and that is a possibility but its also taking the easy way out, and for some building the under dog is more fun.

NJHK i am not exactly arguing with you, i def see you point. For people that will be satisfied with 350 then yes twincharging will be for show, but to hit the excessive amounts of power it would be a good option.

Don't get me wrong a t4 is a bit big, but also for some people 350whp is not going to cut it. There a few people on the site, and my-self will be one of them, building thier engines to hold over the 450hp the stock engine is supposed to handle. As long as everything go to plan my car will hopefully be in the garage for the winter getting the enigne torn apart and rebuilt. To hit 500+ hp will be tough, either twincharging or mounting a new blower (twin screw) would be sufficent but both will be expensive.

Now i know the question of for that much hp why not buy something faster out of the box, and that is a possibility but its also taking the easy way out, and for some building the under dog is more fun.

NJHK i am not exactly arguing with you, i def see you point. For people that will be satisfied with 350 then yes twincharging will be for show, but to hit the excessive amounts of power it would be a good option.

There are still hybrid turbos out there (T3/T4) that are big enough to support over 400 HP.

what trim would you need to support 500+ hp? you would still need a rather large one, and with that large trim comes the lag. 3500 RPM in rality is not that long, its maybe a half a second when your driving. But when you at the track a half a second could be half a car lenght and the drifference between winning and losing. That might sound cheesy but i hate to lose.

Also, the difference in price between going all turbo and twincharge would be minimal. Both set ups would require all the basics, lines, pipes, ect, the turbo, intercooer all the goodies, but with turbo you will have to either a) gut the s/c to act as an intake manifold (popualar option with the cobra guys) or b) get an actual intake manifold. So if the cost is going to be the same, why not twincharged?

Also by the way, if i DO decide to go twincharge, it will be a custom job, and not some prefabed hahn kit that will push out minimal power.

what trim would you need to support 500+ hp? you would still need a rather large one, and with that large trim comes the lag. 3500 RPM in rality is not that long, its maybe a half a second when your driving. But when you at the track a half a second could be half a car lenght and the drifference between winning and losing. That might sound cheesy but i hate to lose.

Also, the difference in price between going all turbo and twincharge would be minimal. Both set ups would require all the basics, lines, pipes, ect, the turbo, intercooer all the goodies, but with turbo you will have to either a) gut the s/c to act as an intake manifold (popualar option with the cobra guys) or b) get an actual intake manifold. So if the cost is going to be the same, why not twincharged?

Also by the way, if i DO decide to go twincharge, it will be a custom job, and not some prefabed hahn kit that will push out minimal power.

Well if you're aiming for 500 HP, I'd hope to god that you're doing motor work. If you're doing your valvetrain system correctly, you can spool a bigger turbo. I've done that and I will say that I have no problems spooling a T3/T4 50 Trim.

If spooling is still your issue, that's why there are ball bearing turbos.

People are still missing the point of twincharging...your supercharger is being your restrictor. You throwing boost from a turbo to your supercharger will only do so much but it won't increase your boost levels because your supercharger is still dependant of your crankshaft and will only spin at a certain rate of speed.

Gutting a supercharger is not twincharging...you just took out the internals of the supercharger...so it's not "charging" anything, it's basically sitting there as an alluminum intake. Anyone who is only twin charging because they are too lazy to take off their supercharger, shouldn't be boosting (in my opinion). If you take the supercharger off, you could sell it and make an actual profit rather than have it sit there and take away power that you're aiming for.

There was a study done on a twincharged subbie, about how the turbo compresses the air and then the S/c compresses it further resulting it the same amount of boost or something along that line. I will see if i can find the artical.

Also, when i said gut the S/C it was meant for a turbo option, not a twincharge option. The reason it is a popular option on the cobras is because the have a similar heat exchanger set up. So you could run both and intercooler and still have the exchanger setup.

Also, when i said gut the S/C it was meant for a turbo option, not a twincharge option. The reason it is a popular option on the cobras is because the have a similar heat exchanger set up. So you could run both and intercooler and still have the exchanger setup.

Understood.

The point of twincharging is to run a huge ass turbo with no lag, something like a 76 trim. Its not to get more horsepower or anything like that. Its to achive your power at a faster rate. By buddies 2.2eco with a 65 trim T3/T4 hybrid only fully spools at 3500-3750RPM, thats half your gear right there. Think of how long a 2.0L engine would take to fully spool a T4 76 trim turbo. Now imagine spinning that T4 76 trim with no lag what so ever, feels good right. Thats what twincharging is about.

As for Josh, he should have done it the right way and build his engine. He tried twincharging a stock LD9 (not gm's greatest motor) what else do you expect. It wasn't because it was twinchaged, he was just pushing crazy amounts of boost into an unbuild enigne. Would have happend whether it was twincharged or just turboed.

Precicely why twincharging is so popular. Min lag/ boost building. WOth the S/C forcing air past the intake turbine you effectively are forcing the turbo to spin faster. Kinda like blowing on a pinwheel to put it in perspective. I personally woudl never twincharge a car. Its' too complex as I said earlier. And yes a better alternative is honestly a good turbo setup. But having a oversized turbo also brings in another perk, a pancake flat torque curve that goes damn near to redline. Making for one FUN setup.

SCC made a 300WHP SCT focus and used a T3/T4 I believe. Running all of 12lbs of boost the turbo hit full boost at 4500rpms and the torque peak was there, and held till a few hundred short of the rev limiter. RUnning an oversized turbo has it perks and it's drawbacks.

Me personally, I'm gonna go with two IHI RX6B turbos on my T/A. Once I get the rotating assembly bought and the engine prepped.:cssNET:

Precicely why twincharging is so popular. Min lag/ boost building. WOth the S/C forcing air past the intake turbine you effectively are forcing the turbo to spin faster. Kinda like blowing on a pinwheel to put it in perspective. I personally woudl never twincharge a car. Its' too complex as I said earlier. And yes a better alternative is honestly a good turbo setup. But having a oversized turbo also brings in another perk, a pancake flat torque curve that goes damn near to redline. Making for one FUN setup.

SCC made a 300WHP SCT focus and used a T3/T4 I believe. Running all of 12lbs of boost the turbo hit full boost at 4500rpms and the torque peak was there, and held till a few hundred short of the rev limiter. RUnning an oversized turbo has it perks and it's drawbacks.

Me personally, I'm gonna go with two IHI RX6B turbos on my T/A. Once I get the rotating assembly bought and the engine prepped.:cssNET:

I agree with what you're saying but that part doesn't make sense to me or maybe you're not putting it in good context. When you say "past the intake turbine" what do you mean?

IN other words you are force feeding the intake side of the turbo wiht high velocity air. Think of it as paralell twin turbos. Only the first can bring boost to 1psi just off idle.

In the natural gas industry multiple stages are used all the time. Often the methane (air or methane, gasses act the same) is put through 3 or 4 stages of compression to allow it to be transported. The higher the inlet pressure into the second stage the less work required to bump up the pressure higher. In 3 or 4 stages these compressors can take an inlet pressure of 5 psi to a line pressure of 850 psi. So it does work, even if on a massive scale.

There are always coolers in between stages so that they aren't compressing a hot gas. So placing an intercooler (which is actually where an intercooler can only be, for an 'intercooler' after only 1 stage (a single turbo or supercharger) is actually an aftercooler) in between stages is a way to keep intake temps down and allow for higher boost.

If you are blowing past or into your second stage with no suction, why would you need a second stage? You would need the second stage to still be drawing (negative pressure) in the pressurized air in order to make more boost. If you are making more boost after your 1st stage and are just blowing on the second stage, you would loose boost to drag in the impeller.

A twincharger system would have to be matched in order to increase the boost, but done right it would work without a doubt.

twincharging doesnt really do anything. it wont add any more power trust me. i thought it would add more power but it doesnt. as for a show thing it would be kool. i used to work on trucks with the twincharging and it really didnt add much. it adds a bit of power but not too noticeable unless its on a diesel

theres a twincharged redline that posted his sick 330whp dyno! WTF are u talking about, stop giving bad advice or the individual that started this thread may stray from his original goal. from now on plz dont give out advice till u do some research, did i add he still isnt done with the tuning? 400whp is still in the works for him.

good day.

It would be easier and cheaper to just trade in the cobalt and buy a 2006 WRX STI + a MBC.


Yea, evreyone just go out and buy a sti, no biggie, the point is to mod the cobalt, not to give up and just get a new car, i still ponder why your still here.

Yea, evreyone just go out and buy a sti, no biggie, the point is to mod the cobalt, not to give up and just get a new car, i still ponder why your still here.
LOL! Agree 110%! Awesome setup by the way, you dyno that beast yet?!?

[QUOTE=sheek360]LOL! Agree 110%! Awesome setup by the way, you dyno that beast yet?!?[/QUOTE


Thanks alot, no not yet, i hope to take it to the track sunday to see what it can do, hopefully i come back with some good numbers!

theres a twincharged redline that posted his sick 330whp dyno! WTF are u talking about, stop giving bad advice or the individual that started this thread may stray from his original goal. from now on plz dont give out advice till u do some research, did i add he still isnt done with the tuning? 400whp is still in the works for him.

good day.

330whp huh? DO you have any links to this members dyno sheets? What's is this members name? Not callign BS just interested in hsi particular setup.

330whp huh? DO you have any links to this members dyno sheets? What's is this members name? Not callign BS just interested in hsi particular setup.
cant link because of the forums rivalry with this one. go to the red line forums.com <had to space it or it wont come out, sorry> search for twincharged dyno chart.

I heard the system hahn is working on is about 400 horses! I would never buy from them but its still impressive!

Heh, imagine that a different forum with a bit of sand in their arse between both of them. Well least it isn't Honda Hookup or somthing. Heh, still remember when I was actually allowed on there. "Can anyone give me vids of their car posting a time faster than mine? No? *Gets banned*" LMAO.

Well I did look and I can say for sure that's a mickey mouse setup if I ever saw one. Still, it works.

Heh, imagine that a different forum with a bit of sand in their arse between both of them. Well least it isn't Honda Hookup or somthing. Heh, still remember when I was actually allowed on there. "Can anyone give me vids of their car posting a time faster than mine? No? *Gets banned*" LMAO.

Well I did look and I can say for sure that's a mickey mouse setup if I ever saw one. Still, it works.
preety neat huh? intimidating to say the least. seems like a pain to tune too

The physics side of my brain says your taking the power adding of the turbo and subtracting the efficiency loss of the SC from it; netting a smaller amount of power than with just turbo. Then the gullible side of me totally understands the "compress then stack" theory. It would be real interesting to see two things

1) Gauge the boost coming off the turbo, but leave the stock gauge in to show the "total" boost. Were it a true "compress then stack" or any sort of two stage compression situation I would think there should be a decent difference.

2) Gut the SC Leaving everything else the same.

Not failing outright doesn't necessarily mean it isn't flawed science.

I'm being a devil's advocate to a certain degree. I don't mean to crap in anyones wheaties.

In the end I'm undecided on the theory

And sorry for raising a dead thread