custom chip
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 949
Likes: 0
From: smithtown ny
custom chip
hi, does anyone no why my 91 vette is still running rich 24#injectors and fastchip burned 1 up for me no they did 2 chips and it still isn't right so i took out the custom chip and used my stock prom and lowered the fuel pressure to 30psi and it's still running rich whats up with this???????
Drifting
Joined: Aug 2000
Posts: 1,521
Likes: 0
From: West Islip New York
Re: custom chip (6spd)
Try backtracking your steps. Was it running rich prior to installing the new injectors and AFPR ? What else have you done ? How rich is it running and how are you determining that? Was this always a problem?
Really need more details.
30PSI is way too low..
Really need more details.
30PSI is way too low..
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Re: custom chip (6spd)
I'd say that they don't have the chip quite right yet. Without the proper tuning your car WILL run rich with the FMS 24s. I'm going through the same thing right now. BTW, I definitly wouldn't run your fuel pressure that low :nonod:
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: custom chip (TA)
It shouldn't run that rich even with the stock chip and lower FP. COuld you have a vacuum leak when you installed the injectors (maybe and an injector seat properly) With the stock FP, the FMS 24 injector I have seen are barely still within the adjustability of the ECM.
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 949
Likes: 0
From: smithtown ny
Re: custom chip (TA)
hi, before i did the injectors and chip the car was running mint the only reason why i changed them was because i have 80,000 miles so i changed them.i called tpis and they said my stock prom should be good to lower the pressure from 45psi with line off to 40psii used a scanner to check my blm and when it goes in closed loop the blm is 108 the ecm is still taking fuel out. i also with a lowered the fuel pressure to 35psi with the line on same thing i only made two changes fuel and chip. please keep me informed thanks i don't know what to do.
