Quote: Originally Posted by
ptperformance 
There is going to be a huge gain from the o2 housing as well. The sharp bend is gone right after the turbo and we open up to 3" right away. The manifold will add the 20 or 30 for sure but the O2 will be good for yet another 20 WHP easy.
My suggestion... You should probably get some real numbers first before you go slinging around power gain estimates. This wouldn't be the first time something gets overhyped. Among professionals, backpeddling and making excuses about why something doesn't deliver the expected gains makes you look FAR worse than experiencing gains that are above expectation. Maybe that's why you have so many professionals gunning at you. I don't know why you keep putting yourself in the same awkward position by going out on limbs, telling people they can expect big gains here and big gains there. It might work on gullible newbies who are starving for attention and excitement, but seasoned pros don't fall for the hype, and it can look extremely foolish. Based on 15+ years of fabrication experience, I think it's possible for a person to see gains like that, but I don't have the recklessness to go leading people to expect gains like that unless they were already making 500-550hp with a log manifold. Maybe less, but I wouldn't go telling people to expect it.
