[jaramillo]

Hi everyone,

As the title says, is possible to disable/eliminate/bypass the electrical exhaust flap/valvle into a BMW?

I want to change the exhaust system of a F21 120i, but If the electrical motor is disconnected a fault in the engine module will be stored, in conjunction with check engine light in the cluster.

Hope someone could help me.

Thank's in advance!

[simonchs]

Disconnect exhaust flip will not got check engine light on cluster, it will show a fault in ISTA only.
If you’ve got check engine light on cluster after modded exhaust on F2x/3x, mostly likely it’s O2 sensor related.