Hi Lightspeed,
There are multiple small holes in each rear baffle. After drilling out the front baffle, I was very happy with the exhaust note, but I wanted to release alittle more exhaust back up pressure without significantly changing the exhaust sound. So I enlarged all the holes in the rear baffle slightly using a 5/16” black oxide 12” aircraft drill bit. I’m now happy with my exhausts and won’t be making any further changes. You can see there is a central theme in my posts about the exhaust. Yes, I want the engine to run well but the exhaust note and how it enhances my overall driving experience with the M3W is very important to me. And I certainly understand sound is very subjective and we all have different likes and dislikes. The Morgan Aero Racing Stage 1 and the Garage 56 Stage 1 are all excellent mods. For any new M3W owner having a less restrictive exhaust and higher flow air filter is a must as others have stated as well. There’s more than one way to “skin a cat”.
![[Linked Image]](https://www.tm-img.com/images/2020/07/12/415EB4B7-D436-4AB7-8100-05DBC51D44D6.jpg)
![[Linked Image]](https://www.tm-img.com/images/2020/07/12/BA6E5B00-0DA8-4FDE-8957-5E38D0A90C74.jpg)