What cfm should I look for in an intercooler. Would be a 3L.

probably one that would meet or exceed the cfm of the turbo/supercharger.

just an fyi. the upgraded spearco intercooler that comes with the ADC T3/T4 kit is a 700 cfm.

I believe the intercooler that Rick(Buckshot) is fabbing up is 700cfm also, IIRC.

Mark

Thx guys, im looking at some around 8-900ish area

The one that I started using in 2003 was a 700CFM two pass core. Works great.

700cfm is plenty for ANY FI project.

Just do the math and you'll quickly figure out why.

Stilov and I are using 750 cfm spearco intercoolers

That is a lot of CFM, the turbo I was looking at upgrading the STi too is just shy of 500cfm, the subie folks go nuts upgrading to frount mounts but I think its overkill when looking at cfm. Anybody know a good calc to size a intercooler?

Edit: found a good explanation of how to calculate the size, its somewhat generic but should work well if you can get some of the data on the core like the example shows from Spearco.

http://www.turbosaturns.net/articles/intercooler_sizing.html

That seems like it is a good estimate. I would think temperature would play a huge factor in those figures.

Originally posted by kinger:

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That is a lot of CFM, the turbo I was looking at upgrading the STi too is just shy of 500cfm, the subie folks go nuts upgrading to frount mounts but I think its overkill when looking at cfm. Anybody know a good calc to size a intercooler?

Edit: found a good explanation of how to calculate the size, its somewhat generic but should work well if you can get some of the data on the core like the example shows from Spearco.

http://www.turbosaturns.net/articles/intercooler_sizing.html

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Yeah.. WRX people almost always go way too big on IC's. If the top mount wasn't in such a crappy position (on top of a hot engine bay) it would be probably of a all right size. I plan on going front mount.. but I have some things in mind different from the norm.