Well I was logging my buddy's 97 grand am 3.1 v6 and all I was seeing was negative spark timing. He says it has wasted spark. The tune calls for all possitive timing of coarse but the spark never fired before tdc on the compression stroke. I'm not familiar with how this system really works. Is it crazy to think that the wasted spark firing plug wire needs to be switched with the compression stroke plug wire? if that makes sense........
oh and there's no detected misfires
stock tune
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log
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