BMW Exhaust Valve Mod, More Flow, More Sound, Zero Cost

[@stuffs89]

Thanks for the detailed step by step tutorial. Simply amazing

[@DTeas12312]

When you were revving the car did you have it in the normal bootup mode or in M2 mode? I have done the same measures of keeping the valves open but still dont get burbles on startup.

[@Smolnic]

This doesnt trigger any check engine lights? Void warrantee somehow?

[@taylormoorehead9340]

🌹 *Promo SM*

[@totalkaos6969]

Sound on the video doesn't do justice!. Sounds horrible!!

Sounds worse than connected

[@scott4101]

Wrong