Help with 340i exhaust please?
Hi i currently have a 340i 2016 running mppsk exhaust and a VRSF downpipe. Last two weeks i’ve noticed a huge drop off in the amount of noise in the car. The valve is opening on the exhaust when it goes into sport+ but it is no where near as loud as it was when the downpipe was first fitted. Does anyone have any idea what this could be? I’ve searched all day and not exactly found anyone with a similar issue, any help or opinions would be appreciated 👏🏽
u/JR0192 — 28 days ago