you can actually feel a little better acceleration w/ a larger air filter mounted in front of the radiator.but 'it' feels better with the addition of a larger throttle body and a ZXT-AFM,headers and at least a 2" exhaust with a free flow muffler.AND 'it' feels evan better with a cam and flat top pistons. AND 'it' feels a lot better if you want to spend several grand on a intercooled turbo engine w/after market fuel management,or a V-8 . the point is,like any other 'hobby' ya get what ya pay for,or the more ya spend the faster it'll go.!