Quote from: BigMike on May 29, 2015, 09:55:38 PM
Thank you for joining and for posting. Really cool stuff you've got going on! I will check out your build threads in a bit-
Mid 14-sec at > 13 psi? Need more rear tires?
No, it needs better breathing on the exhaust side. A cheap header, crushed exhaust bends, 6 feet of pipe between the head and the turbo, a catalytic converter and a street muffler all add up to high exhaust backpressure. I have already had to upgrade my valvesprings because backpressure was opening my exhaust valves. HP peaks at 6000 rpm, instead of 7600 or so where the 20v should. I'm convinced it's because of backpressure. Midrange is pretty good. :)
I'm not going to upgrade it because it is quick enough, quiet and would just break parts with more power.