Originally Posted by
rgl10
Ok so in the calculated tables I have a lot of the numbers at 20 down near the bottom, which is at higher boost levels. I've driven the car with the cal setup this way and I get audible knock from about 16 psi and up. My knock sensor voltage is over 3.8 volts and it seems that if the computer is pulling out 15 degrees putting me at 5 degrees total then I really should not be hearing anything on 92 octane pump gas. I thought maybe it was staying at 20 since thats whats shown on the timing map. I will have to investigate further and try a different brand of gas, lower the antifreeze concentration in the coolant etc to see if I can get rid of the knock. Maybe I will lower the limit to 10 degrees and see if that will make any difference.