I have a 90 crx DX with a d15b2 mpfi. Im try to swap a 89crx si d16a6 pgmfi in to it. Whats the easyes way to do the wiring? Im trying to stay form swaping wire harness.

 

you have to use the DX engine harness on the Si engine and do the DPFI to MPFI wiring changes - can't use the Si harness

 

Sounds like the DX already has mpfi so you should just need to swap over the DX harness to the SI motor.

 

sorry i mixed it up so heres the whole deal i have a 90 crx dx with a 515b2 pgmfi. I just baught a wrecked 89 si mpfi and im trying to put the si motor in the dx what should i do with the wiring? just a reminder i have complete si and dx harnesses, ecu's resister boxes ect.

 

Use the search is what you should do.

Drop in the D16A6 and then convert it to mpfi. You can do it the other way around if you wish as well. Here are sites that should help you with it. It is easier to just use the DX harness, as everything plugs up into the D16A6. Just need to add an injector resistor box, a couple of wires for the 2 extra injectors, and the extra wiring at the distributor. Its an easy swap.

http://www.fourthgenhatch.com/mpfi.html
http://www.angelfire.com/d20/h....html
http://www.geocities.com/teampimports/fuelinj.html