Originally Posted by
dispoejoe95
So I looked at my spark advance table from my last datalog run and compared it to my timing table in my bin and it is approx. 10° off. Thinking "how could I have missed this before" I played back some older datalogs and my timing was right where it should have been. Long story short, I found that when I had unchecked or un-set backpressure EGR about a week or so back is when the timing table in my datalogs lost the 10°. I'm not exactly sure how they are tied together but the parameter comments on Altitude Spark Bias say "used with back pressure EGR". Maybe doing both (un set backpressure EGR and correcting spark bias) will eliminate my knock count issue. I'll try it this week along with a few other suggestions.
Also, if anyone is interested, in the cells where my timing says 23039°...I think this is where the timing is supposed to be a negative. Again, not exactly sure why it shows +23000...I'll need to figure this out next.
Thanks again for the help guys.
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