Well, I tested today..

So, this is what I saw..

when I'm not boosting, I hit Peak 60-75 range at 2200-3000RPM

When I boost (.80 bar on PFC), and go above 3000 RPM.. I didn't see any above 45 peak..

I went all the way upto red line and seems like its doing pretty good (<75).

but when the car was cold, and I started to boost a little (under 3500RPM), I notice I peaked at 100.. highest I've seen so far.. but when warmed up.. Highest during 20mile drive was 75.

I'm changing plugs tomorrow.. going all 9's.. I'm running stock 9 and 7's..

 

Are you sure you don't mean 'piezoelectric'?

 

Well, the crystals *could* be a 1/2 billion years old...

 

Just an example of how unreliable the stock knock sensor (or mounting location) can be:



I had just *started* the car.

 

WOW.. thats high..

 

That's just the point though - it wasn't real knock.