Originally Posted by
rays04gtx
your PT/MBT/Min Spark tables, narrow them up. your spark tables as they are now allow up to 42* swing , your rpm error is a total or 40*, and your engine wants to swing 17*
1st attachment is what you currently have(PCM52)
2nd attachment is where I would have those cells on those tables(the rest of the table would be modified to match area, but for demonstration I only changed the targeted cells being used), now if it surges at the values I choose , I would up the MBT table were I have 13.5* I would up it to 16* and smooth area accordingly.
3rd attachment are graphs focused on the RPM area and Aircharge of the log sample. 1st panel is avg, 2nd is max and 3rd is Min, you can see from the avg panel it wants to idle at 11.2* , TAF is relatively steady at 11.5 G/s so it's not an Air issue , tune looks great other wise.......Might want to raise Desired Idle to 750ish , What cam is in it? more interest in Duration and Centerline, I don't care about lift in this situation.