CAI Effectivness

[Football Lanier]

What's the scoop on CAI's for the 330i. Does it help? I read on the Dinnan website where it should make a difference and might try it out.

[MarvelPhx]

I would imagine a small power gain from slightly "cooler" air. Remember, our BMWs technically already intake cold air..

Other than that, maybe some throttle response?

[Grey Street]

I am looking into the GruppeM intake. I hear the power gains are higher than the Dinan. The GruppeM is much more pricy, but it is sweet looking. Anyone have one of these yet? any reviews?

[MarvelPhx]

I've seen the GruppeM on M and non-M cars. Pretty nice lookin, but VERY expensive.

[thekubiaks]

Save your money....