944 - putting post 91 engine, injectors and ecu in 89 chassis
12-09-2018, 04:42 PM
#1
Burning Brakes
Thread Starter
944 - putting post 91 engine, injectors and ecu in 89 chassis
Hi All
Due to a race crash, I'm putting my 91 S2 engine and ecu, injectors into a 89 shell that has the ballast resistor for the older injectors in it. Since I dont need this anymore, how do I dispense with it and/or bypass it?
Due to a race crash, I'm putting my 91 S2 engine and ecu, injectors into a 89 shell that has the ballast resistor for the older injectors in it. Since I dont need this anymore, how do I dispense with it and/or bypass it?
12-11-2018, 03:25 AM
#2
RL Community Team
Rennlist Member
Rennlist Member
If you put the complete 1991 engine (along with its wiring harness and ECU, fuel rail, injectors, etc) into the 1989 car you shouldn't need to do anything else.
I'm not sure what you mean about your 89 and ballast resistors - 89 injectors work with 89 computers with no resistors. Either way, those resistors would be somewhere in the wiring to the injectors, so use the 1991 wiring and ignore the 1989 wiring + resistors. Make sure the new ECU and injectors both came from the same year.
I'm not sure what you mean about your 89 and ballast resistors - 89 injectors work with 89 computers with no resistors. Either way, those resistors would be somewhere in the wiring to the injectors, so use the 1991 wiring and ignore the 1989 wiring + resistors. Make sure the new ECU and injectors both came from the same year.
12-11-2018, 03:50 PM
#3
Burning Brakes
Thread Starter
Nope, the harness is RHD in the old car, and damaged anyway. Using old style injectors without the ballast will fry either computer. ASk me how we know here....
01-22-2019, 03:18 AM
#4
Burning Brakes
Thread Starter
If you put the complete 1991 engine (along with its wiring harness and ECU, fuel rail, injectors, etc) into the 1989 car you shouldn't need to do anything else.
I'm not sure what you mean about your 89 and ballast resistors - 89 injectors work with 89 computers with no resistors. Either way, those resistors would be somewhere in the wiring to the injectors, so use the 1991 wiring and ignore the 1989 wiring + resistors. Make sure the new ECU and injectors both came from the same year.
I'm not sure what you mean about your 89 and ballast resistors - 89 injectors work with 89 computers with no resistors. Either way, those resistors would be somewhere in the wiring to the injectors, so use the 1991 wiring and ignore the 1989 wiring + resistors. Make sure the new ECU and injectors both came from the same year.