Join Date: Apr 2009
Location: Ontario, Canada
AEM by itself and or with a catback will make more power even without a tune and would be perfectly fine. Stage 1 tune + AEM intake will need a special tune for the intake.
Stage 1 and stage 2 tunes on an 08 don't seem to make much more if any power with a CAI compared to a K&N drop in air filter though.
Does anyone have a dyno with stage 1 or 2 tune with an air intake and one with just a drop in K&N air filter on the same car?
I suspect once you tune the car, the benefits of a cold air intake don't account for much compared to just a drop in K&N. I suspect it will definitely make a difference on a bigger turbo but can't see the stock 08 needing to flow more air than can already be had with the stock box and a K&N.
I know that there is the perception out there that the 08 stock intake isn't so good because of numbers made in a Sport Compact Car issue last year but that was before a stage 1 tune with the same set up.
I'm not so convinced until someone can post a stage 1 or 2 tune with and without a cold air intake on the same car.
I went with a K&N drop in filter and XPT Tune by the way. Their Stage 1 & 2 tune come with both maps for an AEM cold air intake and 1 for just a drop in K&N. Their stage 2 map also comes with a special map for E85 gas.
2008 VF52 WRX Opensource Magnus Motorsports Stage 3 Tune
Last edited by operadude; 04-24-2009 at 07:08 PM.