zboi Posted February 17 Share Posted February 17 (edited) Does anyone run a knock sensor, particularly with a turbo car? I run two in the two holes at the top of the block, and get a lot of knock retard at higher rpms and higher boost. Its showing some pretty extreme retard, but the way it is pulling it at higher RPM under no load/boost makes me think that this is false knock. I see no physical signs of knock, and don't have any audible knock. I've attached a spark retard snapshot along with the final spark advance table to go with it. I've read of folks running more timing at the same boost levels, but then again I've read of plenty of folks blowing head gaskets too. I'm running on 93 octane pump gas. This is a stock n42/n42 Edited February 17 by zboi Quote Link to comment Share on other sites More sharing options...
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