0.3mm is supposed to be the factory setting. 0.8mm was the software fix. My GT1 only gives me the 2 options. The shop had AutoLogic software which allowed for setting it in 0.1mm increments. Once it starts without the misfires, it's good. If it starts and has the misfires and you drive it, it's not good (I imagine the cylinders that cut out initially don't come back alive and you damage the cats with the unburnt fuel). I could try it, but getting set up for GT1 and making the changes is a PITA. It won't be back at the shop for another month or so (there we go, jinxed that), but by then it should be warm and misfires go away. If misfires persist in summer, I'll change to 0.8mm and see.

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Daily Drivers:
- 2008 535i, 320,000km
- 2004 X5 4.4, 01/2004 production, 420,000km
- 1997 328i, 350,000km

Track:
- 1996 328i, track/race car, ~300,000km

Winter:
- 2013 Ski-Doo MXZ X 800 E-TEC, trail can
- 2007 Ski-Doo MXZ Blizzard 800 HO
- 2001 Ski-Doo MXZ 600 w/800 engine, exhaust
- 1978 Ski-Doo Olympique 340 (vintage race sled)
- 1977 Ski-Doo Olympique 340E