You would stay away, because it doesnt add much HP unless you are over 350+. In addition, the distance between the filter and MAS is so great that sometimes a CEL is thrown due to a bad reading. Lastly, if it rains, you will sucking water into the engine, which is bad obviously.
Lean runs could make the engine work a little harder . I meet a guy the other day that has a STI amd is running this set up on his car . He hasn't had any problems with this intake and couldnt talk enough about it . It seems all over the wrx forums that there is a bunch of mixed opinions on inatke vs factory set up . This car is not my daily driver and is more for fun than anything else . Still a lean condition is something to stay away from . I think I may stop by one of the local dyno shops and see what a hour on the dyno will cost . Thanks again !
Cold air intakes differ from short ram intakes. On the wrx Cold air intakes always = bad. Short ram however= a little hp gain but not much. The short rams don't lean the car out as bad as a CAI. Check turboxs.com, they make a "shorty" intake that supposidly gives 10 hp.
the injen and AEM are the two that DONT cause that much of a lean change.
the reason that the car runs lean, is that the intake piping is larger in diameter, and it throws off the calibration of the MAF. if you hvae a form of engine management, then you are fine. however, on a stock car, an intake wont make any more power then the resonecotmy would...
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