wasup HCF i'm new to this site, but i was hoping someone might be able to help me with a problem i'm having.I have a 96 civic ex auto, the engine gave out at 285k mile. i dropped in a d16y7 with a manual trans i did the whole conversion. i'm currently using the d16y8 auto ecu/engine harness on my d16y7 m/t set up. i ordered a d16y7 m/t ecu from ebay, now my question is this; will i need to change the engine harness, or can i keep the d16y8 harness? is there anything else i need to do in order to make this a successful set up? any helpful advise is welcome, and thanks.

 

I think the EX auto and DX manual both have the 3 wire IACV, so harness would be the same. The wires for VTEC and A/T solenoids will just go unused. So in short, just swap out the ECU you can leave the harness alone.

 

i see,will i still get the check engine light?

 

No. You have transmission codes being set in the ECU now because it's expecting to control an automatic. With a manual ECU it should be exactly like having a manual DX/LX.

 

i just finished installing the ecu, car idles rough to the point its about to turn off, check engine line is still on as well.