[This is a c&p from another thread I was hijacking.]

Do any aftermarket ECUs do ion sensing knock retard? I got really into this last fall when it was proposed for the MSII router board. The last I heard it took too much processing power but I can't find the post where it was announced and the exact reason given.

Is there a way to adapt an OEM setup to work, similar to the way the Ford EDIS is made to work w/ MS? I know Delphi was doing misfire sensing (w/ ion sensing) in the late 90's, I assume on GM cars.

Here are some threads for the interested student:
http://www.msefi.com/viewtopic.php?t=22211
http://www.msefi.com/viewtopic.php?t=22532