GSXRIntensity

Hello everyone. How much horsepower can I gain from replacing my factory air filter with a K&N filter? I have an '02 GT, and have just started suttle modifications, so I am curious as to know how much truth is there in what I've heard about 10-15hp gains? Any insite will be appreciated. Thanks

LunaticSVT

10 - 15 is a little outlandish. In most cases you can garner around 5, but of course you can look at more if you are changing more in the intake. If you are removing the restricors and a few other things then expect around 8 - 10. But 10 - 15 is a general myth. I replaced my intake on my '03 Cobra and of course my friends shop has a dyno. WE did a before and after and it only garnered a 3 hp difference.

GSXRIntensity

I figured that 10hp would be an outrageous gain from such a simple modification as replacing the air filter. What other restriction are you mentioning that I may want to remove in order to get around 8hp from this? I ordered a set of underdrive pulleys, my Bassani X-pipe came in the mail Saturday, and I getting a Magnaflow Cat-back system. Aside from that, a throttle body/mass air meter (possiblitly), and a sport chip are on the way. I'm trying to let my engine breath as much as possible w/out hindering it's drivability. I'd like to get about 320+hp from all my total mods.