Knock sensor

[Dave Williams]

-> Kenne-Bell is marketing an ignition controller for Syclones/Typhoons
-> that can supposedly detect detonation in each cylinder and retards
-> timing only in that cylinder. Since they don't use a knock sensor for
-> each cyl., this must be how they determine whether or not a cylinder
-> is detonating.

 Lots of engines do cylinder-by-cylinder with only one or two knock
sensors.  You know, either by crank position or firing order, which
cylinder is coming up on the compression stroke.  If you get a knock
signal, it's gonna be that cylinder.