can anyone tell me what the difference is between these to? can i use a vx harness with a gsr motor? if i can what needs to done? thanks gor the help.

 

I believe the only main difference is the 5-wire O2 sensor that the VX has. You can use that harness on the C1, but need to modify it (O2 sensor and IABs).

It would be much easier if you found the harness for the OBD your motor came from. It's plug and play.

 

yes u can use that harness, but you have to wire it for vtec. you can find those DIY's by searching ( vtec wiring.)