99 4runner cat back exhaust systems?
#22
Contributing Member
The issue is where the air is pulled from. The stock intake pulls all of it's air from the fender, the K&N pulls in hot engine bay air. Thats where the power loss comes from I am pretty sure. The piping size is the same so there should not be any gains going to the K&N anyways.
#24
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BTOWN4RUNNER
95.5-2004 Tacomas & 96-2002 4Runners
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06-10-2002 06:33 PM