I am running a modified (stock crank and rods, SpeedPro hypereutectic pistons, Comp Cams etc.) Buick Gen III Supercharged 3.8L V6. The injectors were upgraded from 38# to 44.5# and are currently operating at ~ 80%. The throttle body is from a Northstar V8, and the MAF from a vette. The ECM was professionally tuned to accomadate all the mods running 100 octane fuel. I am adding a wet nitrous kit. Will the upgraded injectors at ~ 80% be sufficient or should I go to 65#?
If it's a wet kit, it's not the injectors but the fuel pump that's limiting. That and the bottom end of the L67. I think 100HP shot is a good number to start with and in that case, your injectors can't supply that much fuel so you have to tap the fuel line and the pump needs to supply 33% more fuel (approximately) since the L67 can put down almost 300 ft-lbs.
Updated on December 8, 2019