I'm currently building a B20 vtec, and am not sure which knock sensor to use, or if I even need one. I've heard people say to just disable it in the ecu, but is that wise? I've searched around for the answer, and haven't found anything definitive. The block is a B20b, head is PR3 B16, and the ecu is a Pw0 that will be chipped and tuned with BRE. Anyone have experience with this?

 

Find a good tuner and forget the knock sensor, I doubt if you'll find many people touting Honda's knock sensor effectiveness. I don't use one on my build.

My 2 cents