by 72 SS PNL » Thu May 13, 2010 11:26 am
43ish is what most injectors are still rated at , but alot recently for GM's have been in the mid 50's to low 60's , which might be part of your problem , if the injectors you have are rated in the newer gm scale and your running the old pressures
i think gm didnt change to the higher pressure , tell they started with the non-return style fuel system , my 04 and 06 goats both work on 57ish psi , though with the fuel system in my 04 now im running 43ish with 60lb injectors , though that might change this saturday when i get the car tuned