A quick and easy guide on how to do a fully reversible mod, enabling the M340i's exhaust to sound far sportier- even at idle.
Before and after comparison:
[ Ссылка ]
The car is a 2020 pre LCI, however I believe this mod also works in the LCI MHT M340i's, as they all have a single valve in the right tailpipe.
This mod will open the flap constantly in the right tailpipe . This is usually closed from factory, except when it is under load. This does therefore create a far nicer sounding car, more in keeping with it's character.
The mod does not interfere with vehicle systems and will throw no error codes, it will however likely annoy the neighbours more...
I take no responsibility for your car, follow the guide if you wish and enjoy the result.
