Just installed new exhuast on my 535xi
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Joined: Oct 2009
Posts: 1,380
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From: Indiana, USA
My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
There is some info floating around about that and a cheap DIY mod a few have been doing. Apparantly the early days of the mod you can search for was about plugging tha vaccum line with a golf tee, these days you bypass the solenoid and connect the lines together. Either way, the point was to force the second exhaust port to stay open even at lower RPMs in order to get a nicer exhaust note. Seems like the reason for the valve is to have a quiter Bimmer unless under accleration??
Conventional wisdom says forcing it to stay open should not cause any problems with changes in backpressure due to the fact that the 535s already have trubos pluggin up the exhaust.
That's what I think I know about it anyway!
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Joined: Jan 2010
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From: IL
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Joined: Nov 2010
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From: WestChester N.Y.
My Ride: 2008 535Xi
Platinum Metalic Gray, Black Dakota Comfort pkg, Cold weather pkg.
Thread Starter
Members
Joined: Nov 2010
Posts: 177
Likes: 0
From: WestChester N.Y.
My Ride: 2008 535Xi
Platinum Metalic Gray, Black Dakota Comfort pkg, Cold weather pkg.
