ford4wd08

well from what ive been shown on PHP forum it does quite a bit if you take advantage of it with custom tunes. and i did notice a difference with mine, but i also have the 4.6

Ftruck05

7hp....Really, 7hp and that's if you have a custom tune from bill....I know how it goes....Without a tune there is no improvement.

Justin251

I just realized. When I hooked my battery back up I didn't have to reset my radio stations.

Did I not leave it unhooked for long enough? I know it was unhooked for at least 40 min.

ford4wd08

i didnt say HP was the difference more of a better throttle response. and 7hp is what the claim is from companies like K&N and airaid. but i didnt come here to argue just came to share my experience. and its a **** ton cheaper than the CAI's out there.

Justin251

Yeah, kn and air raid and roush and what not want a lot of money for some plastic.

Hell, want a pair of crocs too. But, I'm not paying $50 for some plastic that poured into a mold and then the excess is shaved off. Even crocs for infants are $49. haha