Decipha
10+ year member
www.EFI Dyno Tuning.com
Anybody know how much PSI the low pressure valve is suppose to show at normal operating temperature? I'm charging my friends 97 3800 sfi grand prix and i have no clue what the pressure is suppose to be at, right now i have it at 45 PSI and its blowing cold but i think it's suppose to be a little colder... any help is greatly appreciated