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As I recall, chrisfer was having a severe pinging problem. His solution was to put the ECU in Alpha-N mode (ie ignore the HEGOs) and run a richer than 14.7 stoichiometric AFR to cool the exhaust valves specifically and the engine in general with an affordable increase in fuel use. He doesn't say but I expect he was using a "road" dynamometer.
This table is distorted by its two measurements, the altitude which is only measured at the time of starting, if you climb a pass no modification is taken into account.
How do you know the altitude isn't checked at certain time periods vs. just at time of starting? This seems to totally go against one of the main benefits of a fuel injection system ... example: you start your ride at 2000 ft above sea level, and go up to 8000 ft and the bike still runs great (theoretically). If it still has fueling of 2000 ft then sounds like a dumb carb.
My question is why does the right cylinder ignition coil have three primary wires and the left have the usual two?
BTW many V7 III riders have observed a hiss when opening the gas cap for refueling.
chrisfer's measurement of atmospheric pressure at Ignition On does not conflict with real-time manifold air pressure measurement.The same pressure sensor, built into the ECU/throttle body assembly, is used.I believe the reason is related to ECU calculating speed which might be 16-bit but I would not be surprised if 8-bit based.The pressure sensor provides some physical signal, maybe a voltage or maybe a frequency (eg, capacitive MAPs). This signal must be converted into an absolute number that can be used in the Alpha-N algorithm. This conversion takes calculation time, plenty of which is available before the engine is running and in short supply at 8K rpm.So a common technique is to calculate the initial absolute number from the initial sensor signal ONCE before the engine is running.Then while the engine is running, the difference between the initial sensor signal and the real-time sensor signal is used (often in a lookup table) to modify the initial absolute number originally calculated before the engine was running. Calculating this delta number would take less time than re-calculating an absolute number every engine revolution (or whatever rate the ECU uses).Corrections and additions welcome.
Yes, not really severe pinging, but some pingings at mid aperture, after cruising, persistent with "beetle map".Yes I do my tests on the road.With the sensor I could see that the pinging area was also poor, near 15 AFR, I have adjust this area to 13 AFR.
I have the same problem on a 2018 V7 III "pingings at mid aperture, after cruising". More frequent as the ambient temperature rises. Any simple way to solve this?
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