[Gvtec]

J&S Safeguard Version 0 "classic"

Includes brain, wiring connector, knock sensor, visual alert/meter, and audio alarm.

Don't confuse this unit with the Ultra Safeguard. All this unit does is look for knock and pull a user specified amount of timing advance.

http://www.jandssafeguard.com/index.html

$250 OBO + shipping

 

[integraRJ]

how hard is it to instal, and is it better then msd

 

[Gvtec]

I don't know your technical skill level, but you have to splice wires on the ECU. I wouldn't think it would be any harder to install that a VAFC.

I'm not aware of MSD producing a knock-retard device, so I don't know.