Uprated Rooster Racing Bypass Valve Now Mini did try an

Now Mini did try an ECU tweak on the later models but even that is not going to work

However inside the valve is a rubber diaphragm and small conical spring that is vital to its function

That fact alone is why I consider the bypass valve as something that should be replaced as part of keeping your engine running as it was meant to

should you have lower operating vacuum due to modified camshafts fitted

It is a physical weakening that can not be rectified electronically

Uprated Rooster Racing Bypass Valve Now Mini did try anThe bypass valve is a very important part of the supercharger air flow system. It is a pretty much neglected part, as it is small and not very glamorous looking. However inside the valve is a rubber diaphragm and small conical spring that is vital to its function. Over time the spring weakens and when you change gear or simply close the throttle you may find a slight flutter or hesitation in the engine revs. This is known, in the R53 Mini world as Yo