[Dark_5.0]

Originally Posted by USMC302

The chip won't affect the pressure, it will control the impedence of the injectors firing the fuel (hope I said the right) anyway, the best way to know what fuel pressure you need to run for your setup is to run it at the track and adjust from there, I would start at 32psi or so and go up from there, watch your mph, not your et. Once mph starts to drop stop adjusting. I would adjust in 2 or 3 psi increments. Ever thought about investing in a wideband? Would work wonders for tuning!

He covered it from top to bottom and is 100% correct.