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Engine Speed Limit error during massive wheelspin at launch??
I was launching my SHO at the track today when I revved it to 2500 RPM. Once the light went green, I went WOT and the car launched. However, with the wheelspin and RPM rise, the RPMs hit 3600+ RPM and my Torque Source went into "Engine Speed Limit". My car was then limited to 14-15 mph on the track. I had to shut down the car and re-start it mid flight on the track to finish it up. Could it be the Inferred Movement RPM setting? Stock setting on the SHO is 3000 RPM.
I also encountered a delay during the WOT 1-2 shift. It felt like wheelspin but the datalog showed the RPMs to be fairly stagnant (didn't spike up or drop down) and the throttle plate was wide open. I didn't see any fluctuations in spark or fuel either. I don't think it is transmission slippage because the RPMs didn't spike. I'm thinking either the WOT 1-2 RPM is too high or once it drops into 2nd gear, the torque causes the wheelspin and it bogs for a bit.
Any ideas on the Engine Speed Limit error?
Last edited by metroplex; 04-12-2017 at 06:12 AM.
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Tuner
Do you have the
Engine>Torque management> General>Torque check....Tab in your calibration. I'm thinking it could be that if its enabled.
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Torque Check was already disabled.
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Tuner
How about under Transmission>Auto shift speed>WOT Shift Map>Max Accel....Try moving these up to 100 mph.
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My max acceleration was already set to 50. Not sure if it was under the shift map tab though. Do you know the unit of measure for the max accel?
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Tuner
On my f150 its in mph. It was set to 1.75 on all gears stock, but I maxed them all out to 100 mph.
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I believe those tables are only for 15-up. I don't see it on mine. I only have a scalar setting under Trans -> General -> Max Accel (along with Inferred Movement RPM).
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Tuner
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No confirmation that Eric's change to their tune solved it, but that setting isn't available on the SHO yet.
I did submit the usual info to HPTuners to have them try and add that parameter. They only added it for some of the Fords (mainly Mustangs and 5.0 F-series)
Last edited by metroplex; 04-12-2017 at 03:41 AM.
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It did it somewhat again this morning. During a proper launch, I got enough wheelspin in 1st gear to hit some kind of limiter (felt like a rev limiter) causing a massive delay in the 1-2 WOT shift.
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