Knock sensing

[Gary Derian]

Check http://www.adrenalineresearch.com/smartfire.htm

Gary Derian <gderian at oh.verio.com>
>
>I was wondering, has anyone out there built or knows of a way to
>detect knock via the ignition system?  I think I saw an article on
>this once where the current flowing into the spark plug just after
>ignition can be used to detect knock and air/fuel ratios.
>
>Thanks
>
>Brian F.
>