Hey guys I am new to the site here but just have some questions here. My cousin and I are building a 2007 Cobalt ss/sc together just to play around with. We wanted to know what kind of setup should we do? We want to stay supercharged we have no desire to turbo it ever. What is the best way to get the best power out of the car? I will list what mods we have so far below.

Corsa touring exhaust - We deleted the resonator and put a straight pipe instead.

Injen cold air intake

3.0 pulley - We think it is atleast we bought this off ebay and only gave us 2PSI more so not sure if it really is a 3.0 pulley or not.

Oh yeah one last thing we are going to to do a compression test on the car here tommrow. Does anyone know what we should be running across the board number wise. I have no idea what these cobalts run.

Thanks,
Ryan

 

OTT stage 1

and I wouldnt be putting smaller pulleys on it with stock injectors and tune.... that = blown motor really quick.

 

Intake
Header
Downpipe
Exhaust
Over the Top Performance Stage 1

Then the major mods needed are cooling and traction mods.

Rotated Mounts from OTTP is a great place to start for traction and wheel hop removal

Bigger heat exchanger, dual bypass and meth injection to cool it down.

This will make a fast car and lowers risk of blowing up and breaking trans/axles and such.

 

Wow ok thanks for the input guys. yeah ive never delt with american cars ive alwys built toyotas like AE86 corollas, celica all tarcs and few supras. I dont quite underatnd how the whole electronic throttle works either. Im not sure if its just me but I feel like there is a slight delay when hitting the gas compared to a cable driven throttle IMO. An yes I know we need to get 42lb injectors for the car it running lean as **** right. Im hoping I can hook up me AEM ems I have laying around to it to get a good tune in it here an dwhat kind of dyno number should we be looking at with these mods to the car. When we first got the car we dynoed it with just exhaust and it blew us away with the numbers it made, 241whp and 250tq. We had no other mods and we made three pulls on a dynojet and made the same numbers each time.

 

How do you feel about modifying the car? What are your end goals for it?

If you have any questions feel free to post or pm me with them.

 

Really we just wanted to beat SRT-4's lol im tired of them talking **** and they will never race my Celica all trac cause of the all wheel drive and making roughly 350whp. I know these cars are quick good low end and top and my cousin and i saw it as a good project for us. I would like to push as much power as possible out of the supercharger as I can but at the same stay as reliable as possible if that can be done.

 

Well 280whp is about all you will pull out of the supercharger without going crazy like porting everything.

The turbo swap is the best way to make big power.

As I said before, if you stick with the super, traction and cooling are really the first mods that need to be done to make the car fast and reliable. Don't ever go lower than a 2.8 pulley.

 

If you would like to stay supercharged, and get some nice power.. removing the stock s/c and replacing with the Harrop HTV1320 is a very good choice...

I dont know why you wouldnt go under a 2.8 pulley?

I mean... he can do what he wants.. because you dont want to take risks doesnt mean he cant...

And its not even that much of a risk.. unless he keeps using the 42# injectors.

 

Oh yeah another thing where is the best place to get a header and downpipe for the car. Looking for something that isnt outrageous in price also.

Thanks,
Ryan

 

The stock blower its or just any blower?

 

Shorty midlength, or longtube?

 

ok how small of a pulley can we run of 60lb injectors?

 

2.50" on the m62, 3.0" on the tvs

 

With 60s? If you wanna have some fun.. id say 2.6 ...

Please look into my upgraded supercharger idea.. promise

 

which one has the best powerband? Im assuming a longtube would but what is price for soamthing like that?

Thanks,
Ryan

So Im seeing that this upgraded supercharger is really worth it then what kind of WHP can I make with this new supercharger?

ok you guys are going to have to explain what m62 means and TVS sorry just not exactly sure what it is?

Thanks,
Ryan

 

For most longtubes on the market its around 600~620 with the header and dp. Midlengths can be had for less Clear image makes one, pacesetter, zzp.

I gained 70+ whp over my old 2.5" setup


The m62 is just the name of our stock blower. Its a gen 5 eaton m62.

The tvs is eaton's 6th series release of there blower. Features include a extra lobe on each rotor (4 on both) 160* twist on them, better heat disapation, higher ve, quieter operating level then prior blowers.

 

Ok so long tube is the way to go then. I cant beleave you gain that much power with the new supercharger now what size pulley were you running on the supercharger?

 

On the tvs i ran the 2.75" pulley to the tune of 25 psi.

Gimme a sec i will get a couple dyno sheets for ya. Top is the tvs bottom is m62

 

Ok so a TVS is just an upgraded supercharger then. Thanks for all the info and sorry bugging all of you witht he dumb questions just didnt have much knowledge on american cars or supercharged ones at that. I think we are going to go ahead and but the OTT stage 1 to start here and go from there depending how much we feel like dropping on it.

OK thank you very much and I see your a vendor for OTT. I really appreciate how helpful you have been dont see that in much companys anymore. Me and my cousin will be buying are parts from your company for sure. Customer service means alot to us it really shows what kind of company you have and how it is ran.

Thanks,
Ryan

 

Sounds good.

Do you have a way to monitor IAT2 temps and AFR? those are very crucial if you want to keep from blowing the thing up.

 

Well.. you wont be able to compare the m62 to the TVS...

There is probly close to 80 or 90hp difference in the ott stage 1 and the TVS....

That ott kit is the best way to go though.. it comes with everything u need, and sets you up for larger things down the road.

 

I do not remember 100% what the compression numbers should be, but I think it is around 120.

 

No not yet I am going to a AEM afr gauge for it. An we have never looked into watching the temps on the car the engine never seems to run hot ever for us at least and we run the car hard all the the time.

 

No problem, if you don't ask questions you would never know.

Our kit is $425 with a 100 refundbale core charge. For the money and what you get i don't think the value can be beat.

Let me know anything you need. Feel free to pm me anytime

 

another thing what is the best way to get traction with this car. Never delt with front wheel drive and I learned fast that FWD sucks no traction in 1st at all and barley in 2nd. What do i need besides good tires for it.