attached are some logs.
WOT 2 was an original file back in 2015 for tuning
Misfire afternoon feb 7 was the first of datalogs
3-11-17 has a few misfire feels but really shows the lunging with the throttle angle constantly moving even with a pretty steady foot on the pedal
3-12-17 has a few misfires.
I am going to try and log in the morning first thing. I will try and add all the datapoints like I had in the WOT 2 file as well as a few other ones if I can find them like the desired VS actual Turbine speed. I am missing a little consistency in my datapoints but over the next couple of days I will log all possible points and try to create a timeline of exactly when they are happening. It has been going on for about 6 months and has not changed its behavior, just comes and goes and happens randomly.
Figured maybe this might give someone an AH HA moment. I appreciate all the input thus far. I can only narrow down the the PCM or the Transmission. you can watch the logs and see a correlation with RPM, Throttle angle actual, load, and boost. I just cannot figure which one is acting on what parameter. What is it seeing that it is commanding the throttle blade open more or less while having a steady foot on the flat roads around here. I was watching the values on the SCT X4 today and as I held the right foot right at a set voltage on the pedal sensor you could watch the throttle actual go up 2-4 degrees, then the boost would change, then the load value would change, and sometimes the spark advance would go up or down a few degrees. I just do not know what is causing what. This is mostly for the lunging but The misfire feel does show some random numbers as well.
The only transmission thing I can think of is when the misfire is occuring there is not much acceleration happening. Once you press the pedal further it takes a second or two and then downshifts quickly and takes off. It only does this hang up when its misfiring. other times it behaves normal. I keep thinking it has something to do with the load calculation but cannot justify what would be causing this. Could the Crank sensor be off a little? Then again all I can think of is why no codes. It is frustrating because I hate throwing parts at it.
tonight I went ahead and pulled the cowl and disconnected the PCM. The connections were clean and dry. Just to verify I used some Electronic cleaner and then blew the connections dry. I reassembled then cleaned every ground and connection. Went for a test drive and still having the same issues.
I am going to try and changed the trans fluid tomorrow and see if at least anything changes. if it feels different or gets better maybe we are on to something.
