help me with some specs

[quads14589]

i was wondering if anyone knew how much horsepower gain a full pro circuit ti-4 would give my 400ex? And would it give me low end or top end?

thanks alot.

[N400Ex]

i dont have any numbers i can give you... i use to have a t-4 on mine... and it was alrite in the begining but it got old real quick... i didnt notice too much of a power gain after a while... i put an hmf on mine and i love it...i thought my t-4 gave me more lower end... its just my opinion but i prolly wouldnt buy that pipe again... there is just so many pipes out there that are better (hmf, curtis, lrd) thats just my opinion lol hope it helps...