kyle@stillen

Mike- Great post, this is the perfect platform for GTM and STILLEN to answer questions that people might have on the kits.

Josh has done a really nice job of answering the questions on this thread but I just wanted to jump in and answer the question about where boost is being measured.

During our testing we are actually measuring boost from two locations. One before the intercooler, and one behind in the manifold. This is so that we can see if there is any boost drop across the intercooler. The 7.9 psi that we have recorded is being measured in the manifold behind the intercooler.

da mayor

iTrader: (2)

thanks Mike.... need more info on the M37 supercharged project!

whiddles

iTrader: (2)

so kyle was there any loss? what was the psi before the cooler?

kyle@stillen

We did have a slight loss across the intercooler but we re-designed the intercooler so that we no longer have that. Even if there was a little bit of boost loss across the face of the intercooler it really doesn't matter because the boost pressure going into the engine is what really matters.

G37Sam

Ok it's getting confusing here.. by intercooler you mean the pipes running inside the manifold or the heat exchanger behind the bumper?



If it's the one behind the bumper then I don't see how there would be boost loss accross it anyways when boost isn't passing through it in the first place?

If it's the one inside the manifold, then how can boost drop not be important?

whiddles

iTrader: (2)

True i just wanted to know for effiency thinkings. they changed the design of the manifold that lost pressure is my guess. and the loss was probably 0.1 psi.

kyle@stillen

Whiddles is right...The loss was almost nothing. We just made some modifications to improve the intercooler so that there as no drop in boost and the intercooler is actually more important. And like I said...The 7.9 psi that we stated was AFTER the intercooler...So the engine was still seeing nearly 8 psi...It's not like it was 7.9 before the intercooler then dropped...

When looking at an air to water intercooler setup the intercooler is inside the manifold and the heat exchanger is mounted out front by the radiator.

G37Sam

What powers the water pump in your cooling system Kyle?

kyle@stillen

It's an electric water pump.

whiddles

iTrader: (2)

if the air gets denser at the intake manifold from above that to me makes me thing the SC would have to work less. but i guess not. Warm air less dense than cool air right? so 8 psi less dense air should equal a greater psi of dense air?

WhosUrBuddiee

iTrader: (1)

What is the size of the frount heat exchanger? Any pictures of it mounted?

Say a member has a Ionic or Auto X grill. Can the heat exchanger be mounted behind the large opening?


Also can the heat exchanger.... say be powder coated black with STILLEN in red across the front?

Example

whiddles

iTrader: (2)

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I just wanted to point out the miss spelled manifold. (mainfold) just to let you know.

P.S. I know I can't spell worth of crap

Mike

iTrader: (1)

Yes. Ultimately, the mass of the air doesn't change (pV = nRT), but the cooler intake charge allows for either more air to be sucked in (same volume, higher density), more compression (cooler air can compress more before getting to detonation temps), and more advanced timing (again, cooler air, even after compression), all of which ultimately either add to safety and/or power. In this case, it mainly allows for the first two.

An air-to-air and air-to-water essentially do the same thing, which is cool the intake charge, just via different methods.

whiddles

iTrader: (2)

Got it. love physics. NOT

Weiboy718

iTrader: (10)

man, you guys know so much about FI. hopefully i'll have some luck with this and not run into too many problems.