I had my car on the tuned stock calibration. I puy my car back on the original stock calibration. It pulled so much harder. But i looked at my datalog and with the tuned stock calibration i had knock count of 8 or more on cylinder 2 once the car was warmed up. With the original stock calibration i had knock count of only 6 on cylinder 2 and knock count of 1 on cylinder 3. I have a intake, single exhaust, test pipe, recently new denso coils and 2k miles old ngk iridium plugs. Any thoughts?

 

After a tune i still get knock at around 8k in 2nd and 3rd, and sometimes 4th. How can you tell which cylinder on Kpro?

 

see what RPM you are getting knock at and lower ignition and make sure you arnt running lean....keep lowering till the knock goes away