Thread: please dont tell me this is knock

Originally Posted by 01gpgt01

75psi? OMG thats the issue. Please confirm thats the number. If so dont start the car lol

lol yea thats what it says. What should it be at

i need a scanner but the ol lady is getting mad at me for spending money on the car, even though this is the first pay check in like 2 months that ive spent some money on my car, fvcking whiny ass

52psi shouldnt it?

42 psi idle with vacuum at the regulator. 58ish with no vacuum. Drop it down. You might want to double check the gauge is working correct. Thats a CHit ton of pressure you have. I say the chugging your seeing when in boost is caused by this. Higher pressure=lower IPW's the injectors are opening shorter but over fueling

Holy if my gauge is correct then yea no wonder my car is about to die. If its faulty what would be a good idea how to check?

Ok i tried lowering my fuel psi. I got it to the mid/upper 60s, anything lower and the car struggles to idle and the rpm's go from 700-1500ish. Or is that normal, ive heard that the ssm90 sometimes does that when its cold, or is the psi gauge faulty and i am at the right psi?

Let the car warm up then lower the FP. If it stalls then your gauge is off. SSm90's do indeed surge on a cold start. So do must modded gp's FWIW

Ok thanks. Yea i did notice the idle improving once it was starting to warm up. Il give it another shot tomorow