I'm using a Sohc ZC motor just for a daily driven crx. The car is a HF. It's a MPFI already. I'm using a HF harness, and a SI dizzy. Do i need to cut any wires on the HF harness? Or is it ALL plug and play? If it is, the car sounds a little bit funnie when driving.

 

it is all plug and play - you should have one connector on the HF harness that went to the EGR valve that isn't used on the ZC - what do you mean by "sounds a little bit funny"? did you swap out the HF exhaust?