instead of doing a ram system we were thinking about putting a fmic in and seeing if there were any gains with it. also spraying it with co2.

the question we need to know is if it will serve little purpose because the blower and aftercooler would just heat the air back up to whatever temp it is running.

 

doesn't the intercooler come...after the supercharger????? I'm almost 100% sure it does. If that is the case, i dont see how the blower would be able to heat it up. I bet this could make some pretty good gains, but what it would really do is make your later modding better. Say you want alot more boost and go with a 2.6. You will gain more power than other people would with the 2.6 because you would be getting much cooler air. Just make sure it is big enough so it isn't a waste.

 

this setup would be like this:

air comes in through filter, down piping and through the fmic, then into the blower and into the aftercooler then into the engine. the only thing we're worried about is spending $1000 for the fmic and a c02 kit and only dropping the ait's by a couple of degrees

 

There isn't enough push to get it through the intercooler to the supercharger.
Thats why on turbo applications the intercooler is after the turbo because it is pushing the hell out of the air to the intercooler. Here, you just have airflow.

You're best bet to cool off stuff is get a small tranny cooler for like $25 on eBay, then have that sit in front of the car on the radiator...then get some lines and have the intercooler coolant run through the tranny cooler before reaching the intercooler, this will drop the temps on IAT2.

If you're going to spend $1000 on a FMIC...you're wasting your money. Also, with the tranny cooler, buy the CryO2 set up and spray the tranny cooler whenever you want so its on demand whether at the track or on the streets. We have a HUGE group buy where you save 33%+ on the set ups depending on how much you spend over at the RL forums.

 

that's not why the intercooler is after a turbo.

 

A intercooler before the SC will be a waist, it will no gains and probably a loss since it will take more to get the air to the SC. Upgrade your Heat exchanger for a bigger one and put it right in the opening.

 

Self, so what I am doing a larger FM heat exchanger after the stock heat exchanger and then into the intercooler, lowering the temps of the fluid as much as possible and then passing that onto the stock intercooler cores (laminova) it should provide a bit more cooling!

 

I don't think it would be worth the money. It would be just like setting an intercooler before a turbo or supercharger. The heat from both is just going to heat the air back up. I would check into nitrous before I tried this method.

 

It would be a waste of money . It would just end up being a big restriction on the intake side . Take that money to be spent on a FMIC and improve your aftercooler . Theres is TONS of room to improve , our stock aftercooler only holds 2 quarts of fluid with a single pass heat exchanger ....blea!! Look into aftermarket 2-pass intercoolers for the 03-04 Cobra's , their long and about the height of our lower grill ( Im going to be converting to a AFCO cobra heat exchanger ) . Then add capacity with a actual recovery tank like a 1 gallon fuel cell , or something homebrewed out of coolant revery tank from something else . With a recovery tank like that you could utilize ice at the track It kinda want to put my recovery tank in the trunk and run the lines under the body . As long as the pump you were using could adequately push the water thru all that , I bet it would be alot more effecient at cooling than containing all the lines , pump and recovery tank to the engine bay , not to mention ou wouldnt clutter up the engine bay ....just shooting out ideas

Theres tons of ways to improve , but attempting to cool the air on the intake would be a waste of time and money . You cool it down for what , the blower to just heat it back up , not to mention the lack of velocity of the air flowing thru the fmic .

Im not knockin your ideas dude , Im just trying to get ya to understand why it wouldnt work

 

Okay, use a ton of piping and put the FMIC before the turbo and see how hot the air is when it goes to the engine. The FMIC is after the turbo to cool off the air..yeah, but you need the boost from the turbo to push it through the IC.

 

it would take less piping to mount an intercooler before the turbo

 

yeah we weren't sure if it would actually work or not. we were planning on doing the larger aftercooler anyways, but we thought the idea of an fmic should atleast be tossed around to get some extra opinions

 

So you want to cool the ambient air temp before the S/C by using ambient air passing through the FMIC? Am I missing something here? Not to mention the extra restriction the air will run into trying to get through the FMIC.

As for the CryO2 systems, they do make a piece that is designed to be placed in the intake ducting. Then use the sprayer to cool the IC heat exchanger.

Honestly I don't think the gains will justify the cost.

 

when you're moving the ic dissapates the heat more than it would if you just had a single pipe. with an ic i can also spray it with c02 which will drop it down an additional 50 degrees easily. i wasn't sure if that was enough to counteract the heat it would absorb going back through the blower.

 

GMPP's site has a buildup for a 300hp LSJ and they mention modifying the aftercooler to a 2 pass unit for a decent HP increase. They also tried a 3 pass but mentioned they saw almost no performance gain.

Edit: This was not from the same site that lists the Ecotec build book.

 

don't do an FMIC. I can't see it doing anything worthwhile. I will be putting up a write-up on the larger intercooler resevoir I am doing for my cobra tomorrow afternoon. People see 20 degree reduction in IAT2 temps on the cobra, and the cobra stock resevoir is at least 10 times bigger than the cobalt resevoir. There has got to be some potential gains there for the cobalt.

 

Twincharged, from the RL forums, changed his to a 4 pass and saw gains from doing it after having it hooked up properly and tuning the car compared to when he had a 2 pass.

 

He was also running a lot more boost.

 

You're missing the point...it would defeat the whole purpose of an intercooler. You guys have to think in physicality, an intercooler can't come before an turbo.

 

Ok let me explain...

The purpose of an intercooler is to cool COMPRESSED air, not ambient air. Compressed air is hot and are temperatures dramatically raised higher than ambient air. Trying to cool the air before the compressor (in this case, the supercharger) is basically worthless. Why do you think your stock aftercooler is hooked up to your manifold which is after your supercharger?

If you want to run the CO2, that's fine...you just have to mount it on your current aftercooler and that's it. Trying to run an Air to Air aftercooler is worthless and would be a waste of your time.

 

ok i see what your trying to is to pre cool the airbefore it hits the charger so there for the air dosent heat up as much when it is compressed then the cooler compressed air is foorced through the charger cooler which will bring the temps lower then they were before great idea

john

 

If you were to do something like this, there would be a hell of a loss in intake velocity. The best thing to have for an supercharger is to keep it with a strong velocity of air.

 

Even if he was able to cool down the ambient airflow before the charger, the difference would be little.

 

OK I have to be honest here...and it's gonna suck to hear but it's the truth. I had the NX N-Tercooler system on my car last year WHEN I WAS SPONSORED BY THEM (keep this in mind.) The only time it made any signifigant effect was when the air was 80+ degrees and the bottle was at PERFECT PRESSURE. Any variance in the pressure caused the cooling effects to degrade signifigantly. I have dyno tested it, where it made huge gains, but that is also a much more controlled environment where temps could be controlled much better with fans. The most I ever saw on the track was .3 of a second...not enough for me to spend the money on the kit. In fact I have taken it off my car now and it's just sitting in my garage.

 

putting anything infront of the SC like an IC would onley decrease power. As stated before intake presure is far to low before the SC.