Quote Originally Posted by Bio248 View Post
knock = pinging = pre-detonation. do yourself a favor and google it.

our 'KR' is the PCM reacting to pre-detonation. so if you see KR, it's already too late. however, the car is very good at what it does which is why we are able to tune based on KR levels.
Okay so what I've gathered is that our cars knock because of the excessive heat generated by our blowers... didn't even have to google that!

So I'm just trying to organize all of the points made here into a coherent overall "big picture"

The GenV is more efficient in such a way that it creates less heat than the GenIII pulley vs pulley. But when switching to the GenV from the GenIII typically you need to go up .2'' in pulley size so you don't knock due to the better efficiency of the GenV blower. So since the OP has a 3.4 pulley with only headers and other small supporting mods you guys think he chipped a piston and shouldn't be running lower than a 3.6 pulley, but on a GenIII which blows air at a hotter temp, a smaller, more heat creating pulley would have been okay... since a lot of people run 3.4s with headers.

Am I on the right track?