"The OEM system software has the Knock sensor dis-abled above 3200 RPM, this works as a bad fuel sensor at low RPM"
I agree that the OEM tuning is setup as a bad fuel sensor. That is just how it was tuned from the factory though. The knock control system itself is very programmable and capable of a lot more."The Stock system is only making changes if it detects knock below 3200RPM."
The ECU calculates a high-rpm retard based on a weighted sum of knock retards for the lower rpm knock regions. I went into this in some detail in the follow auto-FAQ
La-Z-Link Many of the aftermarket tunes I have seen don't properly adjust the Region C minimum TP, causing high RPM knock retard to be broken in big injector tunes. Perhaps this is what you are seeing with the OEM system not handling high rpm knock? "J&S has an extremely fast modern processor that only requires setting the sensitivety for knock on the engine it is used on"
So does the OEM ECU, 4mhz! "but will not enter into the knock map when needed at peak torque and above ""
Sure it does, it just goes into the high-rpm knock control region C, see the above link.
So a J&S unit can accurately detect knock at 5500rpm without false positives? How do you know? Are you measuring cylinder pressure?
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