Fijiblue92vr4 ... Could you supply a link in stealth316? Can't seem to find it. I did find his [stealth316] technical resources page
Stealth 316 - Technical Information Just tons of stuff there. An article in that listing
Understanding Exhaust Gas Recirculation Systems by Henry Guzman is a good read about EGR's in general. It states that EGR systems are intended/designed to reduce the potential for engine detonation but doesn't really answer whether or not detonation will start happening without it. As I'm curious myself ... I'm just tyring to add info.