[lbush4]

Hey everyone, I currently have an 2021 M340i femto unlocked tuned, xHP tune stage 3, catless DP, AWE track exhaust, and MST intake. For some reason, my car won't make more power past the stage 1 tune. Every time my tuner "cranks up" the tune in a new version I only make stock power to maybe a 5-10hp increase, while stage one is pushing numbers attached. I also get these two codes popping up in every tune version:
Active
-180001 - Catalytic converter: Efficiency below
limit value.
Shadow
-10D000 - Combustion engine: Torque limitation active.

Any ideas on what may be causing the power loss?

[oreoOozZz]

Originally Posted by lbush4

Hey everyone, I currently have an 2021 M340i femto unlocked tuned, xHP tune stage 3, catless DP, AWE track exhaust, and MST intake. For some reason, my car won't make more power past the stage 1 tune. Every time my tuner "cranks up" the tune in a new version I only make stock power to maybe a 5-10hp increase, while stage one is pushing numbers attached. I also get these two codes popping up in every tune version:
Active
-180001 - Catalytic converter: Efficiency below
limit value.
Shadow
-10D000 - Combustion engine: Torque limitation active.

Any ideas on what may be causing the power loss?

Not sure, just throwing in my 2 cents. Whoever your tuner is should be able to fix that or I know you can adjust torque limitations and other custom settings in XHP, maybe send them a log/codes as well and see what they say.

[hayko_M340]

https://g20.bimmerpost.com/forums/sh....php?t=1937745

^ This guy is also having the same issue on another thread. Probably has something to do with the Mild Hybrid system my two cents.

[lbush4]

Originally Posted by hayko_M340

https://g20.bimmerpost.com/forums/sh....php?t=1937745

^ This guy is also having the same issue on another thread. Probably has something to do with the Mild Hybrid system my two cents.

That's some of my thoughts too. I figured that system is being affected by the TCU/ Torque converter given the regenerative braking aspect. Would've thought the mild hybrid TCU tune would of taken care of that issue. I know it's not an OTA update issue since I can change between the 5 different maps I've currently have. Map 2 being the best. All with cold start delete and burble. I can provide MHD logs to anyone that is willing to take a look and assist.

[SaltyPickle]

XHP just released mild hybrid M340 support. Maybe try to re-flash or something to see if it will help you.

[tiago719]

Thread Résurrection

I'm having the same issue
did you got this sorted out ?

[340TBD]

Has this been fixed?

[MichaelNRW]

Originally Posted by 340TBD

Has this been fixed?

Yes.
Either get the MHD custom ROM for the torque limit removal or install xHP.
The issue has been fixed some time ago.
Note that the MHD custom ROM has a problem with the Launch Control and it doesn´t work anymore.

[340TBD]

Thank you so much for responding!

[titan.n54]

Originally Posted by MichaelNRW

Yes.
Either get the MHD custom ROM for the torque limit removal or install xHP.
The issue has been fixed some time ago.
Note that the MHD custom ROM has a problem with the Launch Control and it doesn´t work anymore.

Do you know if MHD OTS maps resolve the torque limitation issue (code 10D100)?
I just installed MHD in a 2021 m340i xdrive (femto unlocked) and after one launch control, we're unable to do another one.

Before that the car had ECU and TCU Stage 2 flash from Madness (idk if it was Madness Motorsport, Madness Tuning or what). What would be happening here? I need to reflash the previous TCU tune? I need XHP mandatory?

[MichaelNRW]

Originally Posted by titan.n54

Do you know if MHD OTS maps resolve the torque limitation issue (code 10D100)?
I just installed MHD in a 2021 m340i xdrive (femto unlocked) and after one launch control, we're unable to do another one.

Before that the car had ECU and TCU Stage 2 flash from Madness (idk if it was Madness Motorsport, Madness Tuning or what). What would be happening here? I need to reflash the previous TCU tune? I need XHP mandatory?

MHD can´t fix the torque limit of the TCU without the custom ROM.
That´s why you need xHP and have it installed before installing MHD.
I installed xHP Stage 2 on saturday, did my 100km drive and then flashed MHD Stage 1.
Until now it´s running fine but i couldn´t do a proper log, because it´s raining since sunday...