I swapped a tpi setup in my car, that was originally a PFI v6. Now the car is an 88 firebird, and all underdash wiring right up to the dash side c207 is all for an 88 2.8 PFI v6 .
From the c100 engine bay side to the ecm side is all an engine harness from an 87 tpi camaro swap. Now, I had to change many pinouts on the c100 connector, and had trouble with injector power, but that was found and fixed.
Ive driven the car for several months, and havent had much problems. My main problem is with KOEO, the fuel pump stays running, I know this is related to the v6 swap. Anyone else run into this? My guess is a 2.8 pfi and TPI wiring issue

ANYONE's input is appreciated!

 

Your pump won't shut off? Why not wire it to a switch...

 

sounds like a simple fix to me.. and then u have a kill switch at the same time.. dont have to worry about someone stealing ur car just hide the switch in a reach-able yet hidden area

 

http://www.austinthirdgen.org/mkport...ine_wiring.gif
http://www.austinthirdgen.org/mkport...ine_wiring.gif

87-88 are pretty similar even V6 to V8. The fuel circuit isnt that much of a change. Running constantly sounds like you've got the ECM wire hooked to battery 12v

 

Its only KOEO. I think i found on mitchell that 88 firebird 2.8 uses D on c207 to power the cooling fan, and uses g4 on c100 for Fuel pump feed from relay, while 87 camaro use d 0n c207 for fuel pump feed.