[maxrev30]

So i finally picked up a 2015 m235i xdrive.

It is in very very good condition and got it for a very good price.

although after having it for 3 days now I've noticed its making a very loud rattle from the left pipe on the exhaust.

It has the m performance exhaust on it and after taking a look under the car i noticed a wire that is just tapped up and there is no electronic piece hooked to the exhaust. Which I'm guessing goes to the electric dump in the car.

I'm wondering if the dump isn't hooked up could this cause the plate inside the exhaust to rattle because it's not getting any power to the dump to hold it in place or could it actually be busted?

thanks for any help/pointers!