need help with ls vtec swap into 91 crx dx


is it possible to use dx harness or must i get the si harness?

 

You need the MPFI harness, so HF or Si will do.

 

u just use the DX harness..
the Si and HF harnesses wont plug into the DPFI harnesses
i hate all the misleading info here in about harnesses,

RULE OF SWAP
1-u use the stock harnesss from the car u are putting the motor on.. use the harness u got for extra plugs

on DX and STD etc cars the plugs are different and the Si's wont work .. u gotta do the MPFI conversion on the harness and from there u do the OBD1 conversion harness on the ecu side and u are all done... 95% of all honda sensors from the 3G civic Si (fuel injected) and up share the same type of plug on ea specific sensor no matter if it is DPFI, MPFI or JDM EDM or USDM

 

I've tried explaining that to my installer for putting in an d15b vtec in my 91 dx, but it's still taking him over a week to finish it.