are there any noticable gains with an hps hard baller intake that replaced the stock intake that cracked? its on the car im buying. also it has a tune from brenspeed that was put on with the stock manifold. should i have it dyno tuned?
Not real sure on the exact #s, but it will help more than the stocker....I say go for it! www.hiperformancesoloutions.com should be the site, and give the owner an email and he should be able to tell you exact #s
there aren't enough people using the intake to have alot of data out there on the net yet. you won't get any good info from their site either as the claims look inflated at best.
My car just made 623rwhp through a C4 at 18psi. I would say it flows well. The most my car made with the stock intake was 600rwhp at 18psi with a 5-speed.