Should I go catless?

[coop.f10]

Im thinking about going catless on my f10 m5 with stock exhaust but im on the fence. Will it be obnoxiously loud? and will it lead to any issues? most likely will buy mad downpipes if i decide i want to go catless.

[M5Rick]

If you are just looking to have a more slightly rortier sound but well below race car sound then resonator and back box mod may be for you.
https://www.facebook.com/watch/?v=633405734096306

[GEXR]

Originally Posted by M5Rick

If you are just looking to have a more slightly rortier sound but well below race car sound then resonator and back box mod may be for you.
https://www.facebook.com/watch/?v=633405734096306

Do you know if there’s any crazy drone in the cabin after this mod?

[KurtsM5]

Originally Posted by GEXR

Do you know if there’s any crazy drone in the cabin after this mod?

Here's mine, catless, stock pipes with resonators but muffler delete kit.

https://www.youtube.com/shorts/urobSHRG9s0

https://www.youtube.com/shorts/uSZks...?feature=share

https://www.youtube.com/shorts/-CSIP...?feature=share

[M5Rick]

Originally Posted by GEXR

Do you know if there’s any crazy drone in the cabin after this mod?

Not as far as I know and from what I've read the 'gunshot' gear change is better with it removed with the end pipe valves open.

[M5 Hayden]

Catless will definitely bring up the sound of your V8 but won’t be too loud as long as you keep your cat back stock remember you also have valves in your mufflers it’s also better to go catless if you’re leaking valve stem seals (mine does) so it won’t clog your cats on the long run

[M5 Hayden]

Originally Posted by M5Rick

Not as far as I know and from what I've read the 'gunshot' gear change is better with it removed with the end pipe valves open.

The gear changes even on the stock exhaust valves open vs valves closed I tried it it’s quite a big difference.

[Nickolashead]

Can you get it smogged in CA with a cat delete?