Ignition retard knock sensor.

[d houlton x0710]

Is anybody here working on some sort of ignition retarding knock sensor?
I know the basics of how they work, but have seen a lot of discussion
in the past couple years about how difficult it is to filter the 
sensor output accurately, especially when dealing with different engines
and sensor locations.

I'm having a serious problem with knock on my turbo'd engine.  To the
point I'm actually considering dishing out the $400 - $500 (or more)
for the J&S knock sensor system.  I've found a lot of reviews of it on
the net and it does seem to work as advertised.  It has the ability to
retard individual knocking cylinders instead of all cylinders when
knock is present.

Thought I'd try the list first to see if there was a project in prgress
that I could maybe get in on and help out any way I could.  Or, if
maybe there is already a DIY kit someone is working/developing on that 
they're considering selling.

thanks
--Dan
houlster at inficad.com
http://www.inficad.com/~houlster/amigo.htm