i have a h22a1 4th generation prelude and have a h22a4 knock sensor. i know the clips are different but will the h22a4 knock sensor work on the h22a1 ?thanks in advance.

 

I'd think the Sensor would work the same, just require a different plug.

 

What is a knock sensor and wat affect does it have when u swap or ecu to p28?
Sorry for the ?s Thanks for da info.

 

The Knock Sensor is like a Microphone that checks the engine for internal knocking or pinging. The the gas ignites prematurely it cause a "ping. The ECU uses the info to advance or retard the timing.

The P28 ECU doesn't use a Knock Sensor.