I have a 03' 2500HD 4x4 with k&n cold air, 4" full exhaust, EFI Live Cory Willis tunes with the dsp 5 switch & a Fass lift pump. The truck runs great on all tunes. My question is is it safe to put the PPE boost valve now without an egt gauge? I planning on putting the guages like next month, but i really want the PPE valve? Just a little strapped now because of all what i just did to the truck. What do y'all think?
