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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning B48 low load knock Bootmod3

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      04-05-2026, 02:39 PM   #1
Malubu
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Drives: F22 220i
Join Date: Apr 2026
Location: Germany

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B48 low load knock Bootmod3

Hello guys,

Does anyone got a idea why I have knock under low load and partial throttle with every map even the stock one? It doesnt knock when going WOT. Spark plugs, coils and oil is new. Im using 102 RON fuel on the 93 Oct multimap.

https://bootmod3.net/log?id=69c5188badca5e5f2f31345e

I started noticing this after installing a aluminium intake and chargepipe.

F22 2017 B48B20A 220i

Could it be vibrations from the engine bay triggering the knock sensor? Ghost knock? Chatgpt suggests so.

And might this be the reason why the DME isn't targeting more than 350nm? As soon it reaches more than 350nm, it targets less nm. It happens in every log like this.

https://bootmod3.net/log?id=69c5188ad6fb6168dd5dd219

Its the 6 speed manual transmission, TCU torque limiter is off.
Appreciate 0
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