Quote Originally Posted by niky
I'm skeptical of the 15 hp increase. Does that mean 10whp on the dyno? from just replacing the stock filter? And where on the power curve is it? Midrange? (that can't be top-end)
Sorry, I meant a 15HP gain from the Exhaust alone (not a full exhaust, tambutso lang.), stock headers and intake. I'm kinda skeptical about this claim, but the guy I talked to said that they did a dyno run with the stock exhaust and a nismo exhaust.

Nismo products are pretty darn expensive.