[frankc]

I am planning on using the Electromotive XDi2 for the electronic ignition project on my 2.7, and given that this unit contains an input for a knock sensor, I wondered if anyone has tried adding a knock sensor to a pre-Motronic 911 motor. Would I gain much by advancing the timing a bit more and having a knock sensor back things off when necessary? My setup is Webers, SSIs and Mahle 2.7 RS P&C (meaning I am only at 8.5:1 CR). If yes, where and how should the sensor be mounted? Where is it mounted on the 3.2 motor?

I did some searching here but did not come up with anything.

thanks for any insight or advice,
Frank