Diesel Dumpvalve??
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Joined: Jul 2009
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From: Glasgow
My Ride: 530 D SE, Bogo standard for the mo, full front light upgrade pending
Well im a boyracer at heart and ive always quite fancied having one also i have noticed that if i put my car into sports mode the wastegate chatters when you give it some beans does this happen with anyone elses?
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Joined: Mar 2009
Posts: 2,553
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From: Essex, UK.
My Ride: 2006 530 d M-sport e60
ok cool i guess, what 5 have u got?, iv not heard mine "chatter" but it sure as hell whistles quite loud, it`s going in for some programing on august 5th, i have asked for a health check up on the turbo as well
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Joined: Dec 2008
Posts: 311
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From: The Netherlands
My Ride: '04 530d Executive, all options except sunroof and comfort seats
ECU remapped by ZipTuning to 260+bhp.
Fitting a dumpvalve IS possible on a diesel (i've looked into it myself on my previous car), but it will actually SLOW YOU DOWN.
Our cars (as many turbo-diesels) are made so that after a shift, the turbo is still spinning. This will provide additional boost at low revs and will add to your acceleration.
Adding a dumpvalve will essentially "release" this extra boost and after closing the valve, the turbo has to spin-up again.
I've tested this on my previous car and it did make a VERY noticable difference (in the order of 1 second more on a 0-60 time!)
Let's face it, diesels will NEVER sound cool (even with a dumpvalve, come on, it's still a diesel) and adding a dumpvalve just makes the car slower.
I say, don't do it.
Our cars (as many turbo-diesels) are made so that after a shift, the turbo is still spinning. This will provide additional boost at low revs and will add to your acceleration.
Adding a dumpvalve will essentially "release" this extra boost and after closing the valve, the turbo has to spin-up again.
I've tested this on my previous car and it did make a VERY noticable difference (in the order of 1 second more on a 0-60 time!)
Let's face it, diesels will NEVER sound cool (even with a dumpvalve, come on, it's still a diesel) and adding a dumpvalve just makes the car slower.
I say, don't do it.
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Joined: Mar 2009
Posts: 2,553
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From: Essex, UK.
My Ride: 2006 530 d M-sport e60
Originally Posted by Rislar' post='959914' date='Jul 30 2009, 10:48 PM
It is possible to fit a dump valve and IMO it sounds quite nice, when i find the right one i will post 
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