Servo Buddy
Skutrnet's Servi Buddy assists in removing the bulky butterfly valve in the BMW standard exhaust system. Its also great if you're fitting an aftermarket exhaust. It is easy to click into place and can be cable-tied to the wire harness meaning it isn't noticeable once fitted. The Servo Buddy works by copying the signals of the butterfly valve so the computer thinks all is well with the exhaust circuit preventing any warning lights from coming on.