[Godzilx]

I started running E30 a week ago on a stage 1+ tune and had no issues until today. My timing corrections are going crazy and happening very randomly. I can't seem to find a consensus on what numbers are acceptable

https://datazap.me/u/godzilx/plugs-a...&data=3-24

Started with this and added some more e85 to see if it would help. Car felt smoother after but the new logs said otherwise:

https://datazap.me/u/godzilx/e30-mor...&data=3-24


I've hit crazy numbers today as low as -8 and can't figure out why. My plugs and coils are 3000 miles old and my fuel pump numbers are good. Any insight appreciated

[Ilma]

That second log looks to be post-shift timing drop.

Very common issue and considered false knock by some due to the mechanical noises being picked up by the knock sensors during a shift.

Your timing drops once (only in two cylinders) and then recovers back upwards, so that is a good sign that the knock event is not recurring multiple times in the same gear, which would indicate that cylinder temps are getting too hot.

I would recommend logging several runs in a row to see if the knock always originates post shift and whether it is always present or not. Sometimes the DME is overly sensitive to knock but adapts after a few pulls.

Does not look like anything serious to me.

I had that problem many years ago after a dealer software update.

[Godzilx]

Thank you, I'll try that and post an update tomorrow

[335e92tx]

a custom tune can get around the retards associted with shifts..