why is the ignition timing of the four cylinders inconsistent in the log？

pxj · 11-08-2023, 03:37 AM

why is the ignition timing of the four cylinders inconsistent in the log？
My car has been flash with BM3 program.
https://www.bootmod3.net/log?id=6545...66d258c90496c7

Billfitz · 11-08-2023, 09:01 AM

I don't know what the charts are showing, so this may not apply. However, ignition timing isn't a constant. It varies with RPMs and other factors. For maximum efficiency when cruising timing is advanced, for minimum pre-ignition when accelerating it's retarded.

11-08-2023, 03:37 AM	#1
pxj New Member 0 Rep 6 Posts Drives: BMW f30 Join Date: Nov 2023 Location: USA iTrader: (0)	why is the ignition timing of the four cylinders inconsistent in the log？ why is the ignition timing of the four cylinders inconsistent in the log？ My car has been flash with BM3 program. https://www.bootmod3.net/log?id=6545...66d258c90496c7
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11-08-2023, 09:01 AM	#2
Billfitz Lieutenant General 8243 Rep 16,082 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	I don't know what the charts are showing, so this may not apply. However, ignition timing isn't a constant. It varies with RPMs and other factors. For maximum efficiency when cruising timing is advanced, for minimum pre-ignition when accelerating it's retarded.
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