Yea I don't really know why selected gear stopped working. I believe selected gear is calculated off of vehicle speed sensor input which I am still having issues with and possibly wheel diameter size. I read about it a while back. i can't remember what it said.

Im going to get that sorted so logs can have needed data again. Not sure what might be causing the boost fluctuation. I'm out of ideas and I think I'm going to cease the chase.

Yes. I keep getting an implausible sensor code intermittent for vehicle speed. I replaced the sensor top (the actual sensor that has to do with electricals) with a new one but it's still happening. I'm going to replace the gear wheel and stalk, the whole thing and see whats that does.

Looks like this:



Any idea on the extent to which vehicle speed is used to calculate motor functions such as say throttle position as an example? or maybe fuel input or boost cutting? maybe abs function or something?

Every time i log. I have to with my mk4.

Yep, cluster fuse pulled = no reference to vehicle speed and thus gear.  It causes all sorts of other craziness.  Wish we had me7logger source to try to fix so we didn't have to pull cluster fuse. 

golfputtputt, it seems like you are trying way too hard to fix a hardware issue with software changes.   I would revert back to a completely stock file and try to address your issue from there. 

Also, what Nyet said about accel pedal position.  dig into that.

Yea those are shifts. If you refence throttle angle with ped pos it drops too. Plus i know that log and its my "around town" style of driving. Short shift to 4th and cruise.

I mean, i guess it wouldnt hurt to replace the pedal, hell ive replaced alot of other things chasing this problem...

Alright. Ill load in the stock file and see whatsup. I actually had the thought that maybe i could get a clue about a possible hardware issue through software cues but no go.

Unfortunately, that still leaves me with very few ideas. Next to try: maybe bad turbo? Maybe bad dual mass flywheel? Otherwise, ive tried logical stuff like compression and leak down test, plugs, intake tract leak etc

Also for my reference, whats NLS/AL?

Hmm. alright thats news to me. I may try and find a deal on a new pedal and see what happens.

Thanks, that's what I thought, no lift shift, anti lag.

Solved the issue. At the beginning of this thread, I replaced the line to the FPR with what i thought was new rubber. Wrong, whatever auto zone sold me must have been sitting around for a while because it had split wide open at the bend points in the rubber and was crumbling inside. I have divorced the crankcase and intake systems so there should be no oil or oil residue in or near these lines. Replaced with a different line, thick wall reinforced rubber hose. Maybe this time my vacuum lines won't crumble to pieces twice in two months. Found out by blasting things with brake cleaner whilst keeping the car in block 037 test to baseline an idle and check for fluctuations.

after 13 pages. Closure, finally….

Thank you for everyone's help.