Hello F87 guys & gals, I'm usually over on the F30 forums but I'm here to present Valvetronic Designs N55 turbo-back exhaust system. I've been working closely with these guys for a few years and they make really great sounding exhausts with the ability to be loud and quiet whenever you need. This F87 system uses T304 stainless steel and matches up to any downpipe of your choosing. It's 3 inches from from the downpipe before splitting off to two 2.5" pipes which helps accelerate exhaust gases out of the system for more power and amazing sound. I can't stress how great it is to have two completely different tones and volumes on one exhaust system; I won't have another car without it! Here's a video of the Valvetronic F87 test vehicle running the full system and catless downpipe.
And if you guys are interested in the system here's a link to Valvetronic's website.
https://valvetronic.com/collections/...m2-n55-exhaust
Stay safe out there!