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Old 09-24-2010, 04:47 PM   #41
Back Road Runner
Scooby Guru
Member#: 60082
Join Date: Apr 2004
Chapter/Region: MWSOC
Location: Minnesota
2004 Forester STI


Originally Posted by WagonMafioso View Post
True for MAF based, I got a $50 intake for my MAP, works great and adds power.
Not necessarily either. The stock setup doesn't restrict at all, and the stock tune favors the stock hardware. You can lose power by stepping to an aftermarket option. Gains will be minimal and mainly a side effect of pulling in colder air (if not a short ram intake).

Even MAP based cars are sensitive to the intake used. Heck, pull off the stock piping from the air box and say bye to 10 ft-lbs around 2000 rpm and uneven AFR up to 3000 rpm. I'm not kidding either. It is sensitive to ECU tune though, so on the same setup that created a loss, you can also have a gain just from a different tune. A 10 ft-lb loss with one tune can very much be a 5 ft-lb gain with another tune, on the same hardware.
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