[AGS]

Originally Posted by jmh

Hi,
glad to be back on topic
I am not near my (stored) OEM exhaust so can't check in person but if the exhaust valve is similar to the one on the F30 the DYI from the F30 should apply
http://www.f30post.com/forums/showthread.php?t=761453
As for the vacuum line all you have to do is to unplug it from the valve and plug
it with something which seals it nicely (a golf tee does work wonders ) .
Then secure the line so it doesn't bounce around or can get loose and the plug
fall off .
On the E90 (and likely the Eisenman without the valves) the BMW Performance
exhaust had actually a little metal piece welded to it where you could plug / terminate
your vacuum line.
Oh and yes this can all be done while the exhaust is one the car and also without the
need for a lift etc (it would just make it easier to work on the car if it's on a lift)

Hth,
Jan

Thanks very much for your thorough reply. Hopefully I'll have the time this weekend to some time under the car and give it a try. I'll report back the results for others interested in this mod.