I am convinced if you have bigger injectors you need bigger connector tubes to get the most out of your injectors. Did a boosted launch @ 10 psi and had to be light on the throttle to keep the wheels from spinning right off the truck, locked up the converter and hammered it breaking the tires loose at each gear held steady @ 54 psi When I hit 3400 rpm I backed out of the throttle and I felt the truck settle back down from all the torque it had on it. It was a pretty crazy run. The smoke was not bad but more than stock tubes and fuel psi held @ 13 WOT. The only down side I have found is when decelerating between 50 and 40 with very light throttle it gets very jerky I unlocked my torque converter (I have a full manual valve body) and it went away.