hmmm very interesting information you guys have brought up. expanding on the 4 bolt setup, do 4 bolt header.turbo combos outflow throught the enitre powerband, or are they sluggish down low.
Also, my previous turbo was a T66 bb with a .63 housing and a P trim on a 3 bolt, would going up to a 70 gtq 4 bolt .69 housing make a huge difference?
You guys ROCK!!!
Over 600hp it will make a huge difference. You will need to have your converter adjusted.