I was wondering if someone knows the differnces in wiring between a b16 and b18c.. will most of my engine harness from my 89 hook up to the b18 what will I need to add or change? thanks in advance

 

To run the gsr ecu:
-rewire the injectors and delete the injector resistor box.
-repin the distributor plug
-repin or buy a convesion harness for the ecu. Harness would be a good idea because it is pretty dificult to get the ecu wiring right by just cross-referencing manuals I have tried.
-some other things would need to be done like extend the primary o2 sensor wire and wire in the secondary butterflies. The evap purge does not need to be hooked up but if you do its another couple of wires.

 

thanks man.. is there any way I can run off my pr3 or pw0 computers using my stock harness and some additional wiring

 

Yes you can. It would run pretty good but not quite as good as a gsr ecu. You might want to see if anyone can chip it with a program more suited for 1.8L motors. Im running a mugen chipped pr3 for my lsvtec. The program was designed for a 1.6 and it runs pretty good on my 1.8l with the exception of a slight cold start idle problem. The pr3/pw0 ecus wont operate the secondary butterflies on the gsr manifold. You could remove the butterflies at the expense of a little low end torque run a skunk2 manifold or wire up a rpm switch to activate the butterflies. The pr3/pwo ecus also look for 2 o2 sensors. You would have to have them tapped into the gsr manifold since there wont be any there. You cant run the stock b16a1 manifold because it will touch the oil pan on the b18c. HTH

Kevin

 

thakns man.. I have a msd activation box from my old ladies car I guess I can use that for now to operate the butterfly plates. what about the fuel injectors arent they different.. all the advice is greatly appreciated

 

Yeah the injectors are different. Youd need to run the injectors off the motor of the ecu you are runnning. If you use the pr3 ecu you can get the injectors off of b16a1 90-91 ls 88-91 si all are the same. I dont know what mods(if any) youd need to do for them to work with the gsr fuel rail and manifold.