Got a hole in my stock heat exchanger so this one having a rock guard is a huge plus. Holds more fluid too so this is a nice upgrade.

Car feels more solid now. I'm surprise it made this much of a difference and of course my noise is gone. Installation was easy and I was well crippled at the time. Wish I had a Sawzall at the time of install

Best thing anybody can do to their n63tu2

i love it there is so many other great features other than the tune itself. my cars been tuned for almost a month now and my car runs great very easy to deal with not complicated at all. overall happy with the results.

100% recommend

VRSF N55 Downpipe Upgrade (2012–2018 M135i, M235i, M2, 335i & 435i)

It’s nice

man i luh dis shit man W product would buy again

Had a diaphragm failure but was prepared with a kit from MRM, got me back on the road in 5 minutes. Can't speak for longevity but it sure did save my butt!

Just love the MST air intake, have it on a 2018 b48 330e. The sound is amazing and it just make me smile driving.

Honestly I’m disappointed I order my tune 16 days ago and I’m still waiting for the cable to actually be able to tune my car

Completely satisfied with my purchase. It was a 5 minute setup with registration and flash. My biggest thank you to the wonderful support and team over at MRM, to help start my B58 540i build!

Great build quality. Highly recommend. Kern did a before and after video while using this and it keeps things cooler. Yes you can powder coat it

had an issue with my order, talked to owner, and he resolved issue quickly and professionally.

worked exactly as advertised and shipping was fast!