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Old 10-07-2012, 12:43 PM
gotrice415 gotrice415 is offline
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Location: San Francisco Bay Area
Join Date: Apr 2012
Posts: 76
Mein Auto: M3, 335Ci, X5d, 750i
Originally Posted by Orient330iNYC View Post
this is not accurate. i have the oem performance exhaust, installed at the vdc and there is no exhaust flap. there is a stub to terminate the vac line. the valve is for low rpm noise reduction.

the op has a different issue.
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Ok so you just said it youself. How is that not accurate? There are dpdw's that control the wastegate which is vacuum to it. Since you have an exhaust installed by VDC im sure they blocked off the vacuum line and retrofitted the DME software to ignore or not activate the flap since it ha been deleted.

So if you dont do that what do you think the DME does? Sets a fault for activation and vacuum leak causes lean mixture faults.

Last edited by gotrice415; 10-07-2012 at 12:50 PM.
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