INSW20 Posted December 24, 2023 Report Share Posted December 24, 2023 I have been looking at logs recently, and noticed that even when Knock Global increases, Knock Level is capped at exactly 1000*Knk Level Gain. In this case, the gain is at 0.53, 4cyl using a distributor. Is this normal? The car is currently running 100 octane race gas, with what should be fairly reasonable ignition timing for 91 pump gas. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 24, 2023 Report Share Posted December 24, 2023 Knock level global is the raw noise level from the knock sensor, this is multiplied by the cyl gain when the specific cyl window is active. A knock level global of 1000 means the input is saturated, it cant measure a higher voltage. If your cyl 1 knock level is showing a flat line at 530, this means the knock level global was pegged at 1000 everytime the cyl 1 window was captured. Im assuming you are using the stock sensor?, this saturation is common with the Toyota resonant frequency sensors, they usually arent useful with a modified engine. Swap is for a flat response sensor. If you already have a flat response, then just turn the main gain down. INSW20 1 Quote Link to comment Share on other sites More sharing options...
INSW20 Posted December 24, 2023 Author Report Share Posted December 24, 2023 Yes, stock Toyota sensor on 3sgte. Global gain set to 1 already. Thanks! Looks like a donut is in my future. Quote Link to comment Share on other sites More sharing options...
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