E60 545 exhaust

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   OK chaps, here's one for you. The 545 has 2 exhaust tail peeps, but normally only uses one, for shhhhh.... I have no problem with a bit extra vrmm, and would like to override the thing that limits the exhaust to using one of it's peeps only. I understand there is a vacuum operated valve thingy, and that's what I would like to disable. Any ideas?

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
ken737 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 11-February-2007 Location: Troon, Ayrshire Status: Offline Points: 156	Post Options Post Reply Quote ken737 Report Post Thanks(0) Quote Reply Topic: E60 545 exhaust Posted: 20-July-2010 at 19:54
	OK chaps, here's one for you. The 545 has 2 exhaust tail peeps, but normally only uses one, for shhhhh.... I have no problem with a bit extra vrmm, and would like to override the thing that limits the exhaust to using one of it's peeps only. I understand there is a vacuum operated valve thingy, and that's what I would like to disable. Any ideas?
	Who needs petrol anyway...

Sponsored Links

Andrew Rolland Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579	Post Options Post Reply Quote Andrew Rolland Report Post Thanks(0) Quote Reply Posted: 21-July-2010 at 08:31
	I came accross that one shortly after owning my first E60. Yes it is controlled by an electronic valve and a vacuum operated diapraghm in the inner tail pipe. Hmm thinking about it there must be a vacuum supply from the pump that supplies the brake servo as you can see here that there is defo two hose connection on the electric valve, unless there is a vacuum source in the boot/fuel tank area? Disable it by disconnecting the vacuum pipe and then take the butterfly valve out. Although there is no listing for the butterfly valve as a seperate part here. Although you might upset the back pressure in the exhaust system though which might throw up the EML light. I know what you mean, it is a bit quiet isn't? There isn't a throaty V8 roar when, ahem, shall we say, when pressing on. Would a different airbox and filter make a difference and supply more of an induction roar? Andrew
	Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto