SO I recently purchased a 2006 with 160k on the clock and have been running with the AP under a tune that I have no clue if it is a proper tune. Seems to run good but based on some reads I have done and some videos I have watched I think this tune may be killing the engine. I get a lot of misfires (Cylinder Roughness) especially on Cyl #4 (Also get a few on 1-3 but not even 1/4 as many on cylinder 4) which after having a Compression/Leakdown test done at a shop shows that Cyl 1-3 are at 148psi while Cyl #4 is at 118 which indicates rings are warn on said cylinder.
Can you guys look at datalogs and guide me in the right direction?
Yes I am reading up on tuning/using AP/Reading datalogs but that will take more time than I have in my situation to understand fully. So I come to more experienced minds for guidance.
From my understanding the "most important" entries to monitor are
-AF Learning values
-Fine Knock Learning
-Feedback Knock Correction
-AF Sensor Ratio
-Dynamic Advance Multiplier
IM going to town in a few minutes to log these values and come upload it.It will be a 15-17 mile trip under easy driving conditions.