[jimboski10]

I have a 2019 M5 competition (first bmw I have owned). I have done the stage 1 tune and trans tune and am thinking about going to stage 2. This is my daily driver. I have done some searching on this forum and on FB forums. Below are the things top of mind.

- I do not want to significantly increase exhaust sound
- I do not want to lose the functionality of the “exhaust sound” button in the cabin
- I do not want to have a bunch of stink in the cabin
- I need to pass emissions in the USA (and don’t want to have to swap out exhaust parts to do do)
- I do not want to be fighting with CEL lights

What might be best downpipe set up to accomplish this?

[Stlthnmrdrd]

Originally Posted by jimboski10

I have a 2019 M5 competition (first bmw I have owned). I have done the stage 1 tune and trans tune and am thinking about going to stage 2. This is my daily driver. I have done some searching on this forum and on FB forums. Below are the things top of mind.

- I do not want to significantly increase exhaust sound
- I do not want to lose the functionality of the “exhaust sound” button in the cabin
- I do not want to have a bunch of stink in the cabin
- I need to pass emissions in the USA (and don’t want to have to swap out exhaust parts to do do)
- I do not want to be fighting with CEL lights

What might be best downpipe set up to accomplish this?

keller hjs, send them an email