You seem to be using the terms "knock" and "knock retard" interchangeably. Are they the same thing? Perhaps you could explain?
Precisely my point. They are two different things. "Knock Retard" does not cause damage. "Knock" does, but only if it's excessive and prolonged. One or two, or even a dozen episodes of knock, even heavy knock, will NOT "blow up" a motor. When knock gets damaging is when it's constant, like a constant knock at freeway cruise speeds and load is the worst.
Miller- I don't come up with my theories, ideas or statements from google searching. I learned about knock 40 years ago from a man that knew so much about engines he changed the way an entire world wide industry operated. I then learned more in college, more in 4 years of college Auto Tech, and then learned more by having over 30 years of dealership experience and thousands of hours of factory training. Not to mention the hundreds of race engines I've built and worked on.
Google searching is great, but you obviously have come to the wrong conclusion about some of this. For instance, this statement is not true-
Pre-ignition, detonation, knock, pinging, etc are all the same.
Better hit up google again, those are NOT all the same. And on the GMPP tune, to my knowledge there has been NOT ONE documented case of a GMPP tune engine failure caused by excessive knock. Knock does NOT break ring lands (at least like they break in the LNF specifically.) Excessive heat breaks ring lands. Excessive heat in 99% of the failures caused by modifications beyond what the GMPP tune is expected to run on. Meaning aftermarket intakes (lean mixtures), wastegate "adjustments" (too much boost) and especially tunes put on top of the GMPP tune, putting boost levels too high. Why do you think GM put out bulletins on aftermarket tuning and engine failures? Because they knew they weren't being caused by the stock tune or the GMPP tune, they were being caused by modifications beyond that.
My point here is please do not spread false information about things like the GMPP tune's "excessive" KR causing ring land failures. At least you said "with bolt ons". That's correct, the GMPP tune IS NOT MEANT FOR BOLT ON'S. It clearly states that and was NEVER intended to compensate for additional engine modifications. BTW, those modifications would have absolutely voided the warranty anyway. GM spent a ton of money buying engines and engine repairs they shouldn't have had to pay for.
Just because something is "documented on all the forums" doesn't mean it's correct. The opposite is more than likely the case. Sorry but ALL forums are full of HUGE misinformation. Gee, you didn't put a link the Cobalt forum, don't you think those guys are experts and everything on there is the gospel truth? lol. They got a guy over there who thinks his engine "blew" because he gapped his spark plugs once and the electrode "fell" off. Gee, I'm sure it had nothing to do with the fact his tuner is an incompetent kid.
Sorry about the wrist slapping guys, I just say it like I see it. Didn't mean to slap anyone's wrist, just trying to get the info straight and accurate.