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MG1CS031 Remove MHEV Functionality / Coasting
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Topic: MG1CS031 Remove MHEV Functionality / Coasting (Read 1312 times)
xM1ke
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MG1CS031 Remove MHEV Functionality / Coasting
« on: March 08, 2026, 07:46:46 AM »
Does somebody have a tested solution to remove the MHEV functionality (coasting/disengaging transmission, switching the engine on/off while driving between 55 km/h and 160 km/h) from this ECU (MG1CS031 / 2.0 TFSI MHEV DLVB engine code)?
Even after a full throttle pull with the engine in component protection mode, the engine will switch itself off instantly while in Drive. I would like to keep the normal start/stop button functionality as stock (i.e., when the car is fully stopped). I would only like to fully disable the MHEV functionality. All fileservices I contacted do not offer this service currently.
Software version: FL_8W09B7115R_0003
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Leonhard
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Re: MG1CS031 Remove MHEV Functionality / Coasting
« Reply #1 on: March 09, 2026, 12:19:39 AM »
You'll find these functionalities within the TCU calibration (DQ381)
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IamwhoIam
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Re: MG1CS031 Remove MHEV Functionality / Coasting
« Reply #2 on: March 09, 2026, 03:39:41 AM »
Except longitudinal engines never had DQ381 a trans attached to them LOL
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I have no logs because I have a boost gauge (makes things easier)
Leonhard
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Re: MG1CS031 Remove MHEV Functionality / Coasting
« Reply #3 on: March 09, 2026, 05:39:35 AM »
Yes, of course, longitudinal with DL382, same subject
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xM1ke
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Re: MG1CS031 Remove MHEV Functionality / Coasting
« Reply #4 on: March 09, 2026, 10:31:15 AM »
The DL382 G2 TCU is not unlocked yet, some tuners have managed to turn the MHEV functionality off in the ECU.
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