M50 402 disable lambda

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mahdi93
Posts: 32
Joined: Tue May 05, 2020 12:22 pm

M50 402 disable lambda

Post by mahdi93 »

hi forum im searching to disable lambda for my m50b25 non vanos engine 402 ecu , xdf in download section doesnt have maps or something
can someone help plz ?
Olegonic
Posts: 22
Joined: Mon Aug 17, 2020 9:15 pm
Location: Russia

Re: M50 402 disable lambda

Post by Olegonic »

Hi bro
I have the same need of disabling lambda on 402 dme
I can’t change any idle and POT values online - have a feeling that lambda overrides my input
BMW E30, M50B25 NV turbo
Olegonic
Posts: 22
Joined: Mon Aug 17, 2020 9:15 pm
Location: Russia

Re: M50 402 disable lambda

Post by Olegonic »

I found something on page 5 about lambda
We should put 0 to four or five lambda addresses, then ECU will ignore lambda and refer to fuel maps

UPDATE: I can find 2 HEX addresses and only, I can’t see other three in my bin, WTF?
BMW E30, M50B25 NV turbo
Adhamkhe
Posts: 35
Joined: Wed Mar 16, 2022 1:06 pm
Location: Lebanon
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Re: M50 402 disable lambda

Post by Adhamkhe »

Tried disabling all lambda adaptation tables using winols. Car turns off after a fraction of a second . Did anyone have this issue?
Adhamkhe
Posts: 35
Joined: Wed Mar 16, 2022 1:06 pm
Location: Lebanon
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Re: M50 402 disable lambda

Post by Adhamkhe »

Hi found those lambda Maps for 402
7870 6*1
787e 6*1
788a 4*1
7894 4*1
789e 4*1
IMG-20231224-WA0003.jpg
IMG-20231224-WA0003.jpg (117.67 KiB) Viewed 971 times
But lambda off isn't working.
Any suggestions ?
Adhamkhe
Posts: 35
Joined: Wed Mar 16, 2022 1:06 pm
Location: Lebanon
Contact:

Re: M50 402 disable lambda

Post by Adhamkhe »

After trying for a long time I noticed that lambda adaptation can only change 5%in 402 so disabling it isn't that important
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