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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > MPPSK rattle
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      11-15-2019, 12:07 PM   #1
United Kingdom

Drives: '18 340i MPPSK
Join Date: Mar 2019
Location: London

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MPPSK rattle

Originally had the MPPSK installed in June 2019,

having the flaps open from engine start resulted in horrific exhaust flap rattling,

September 2019 had the backbox replaced under the exhaust warranty. however the rattle is still happening on the new backbox.

so im guessing this is a normal "feature" on all the exhausts to have a rattle on the start with flaps open?

makes me wonder I should of saved myself a grand and got a custom exhaust made with no flaps.. but obviously that route bmw would probably throw the toys out the pram at servicing or warranty repairs.

Original mppsk start (replacement sounds the same)
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