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Rev limit status unexpected On/Off at part-throttle driving

Posted: Mon Oct 19, 2026 5:44 pm
by rst3b
Doing some fuel tuning on the low cam 0 degree table and noticed in the log that the rev limit status indicator keeps going on and off throughout the logs. The rev limit is set at 7600 and this is all part throttle driving, nowhere near the limiter. No protections are configured either. This has occurred in multiple logs so not a 1 time thing.

It seems as if the rev limit status on is tied to the switch from fuel status "closed" to "open - driving" when the accelerator is released and TPS goes to 0.

Seems like its something simple but I can't find it.

Attached a log showing it.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 9:24 am
by Spunkster
You have not posted the calibration this was made with.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 1:12 pm
by rst3b
Sorry @Spunkster. Here is the calibration file

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 1:38 pm
by Spunkster
This engine does not appear to be getting to operating temps and is running cold.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 2:45 pm
by rst3b
Yes, it has an aftermarket radiator and low temp thermostat. It was also a cooler evening when this log was taken.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 2:56 pm
by Spunkster
Why is VTC locked to 0 degrees?

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 3:26 pm
by rst3b
Was starting initial part throttle tuning to get basemap in line to all the mods. Starting with the 0 degree table.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 3:43 pm
by Spunkster
Start with a fresh calibration created form the new Calibration button and see if it does the same thing.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Tue Oct 20, 2026 3:54 pm
by rst3b
Ok I can give that a shot. Thanks

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Fri Oct 23, 2026 3:35 am
by rst3b
I created a new tune file from scratch and still the same issue. I am attaching two logs, but this is seen in all the logs across open loop and closed loop.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Fri Oct 23, 2026 3:24 pm
by Spunkster
disable lean protection and see if the issue goes away.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Sat Oct 24, 2026 11:12 am
by rst3b
The original calibration I posted did not have lean protection enabled and the issue was there. I just enabled it on the last calibration.

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Sat Oct 31, 2026 5:14 am
by rst3b
Any other thoughts on what it could be?

Re: Rev limit status unexpected On/Off at part-throttle driving

Posted: Mon Nov 02, 2026 3:35 pm
by Spunkster
I do not have any other ideas