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Kgolf31 · 11-25-2014, 01:47 PM

Wait till after startup.

There is a vacuum valve that is closed during cold start-ups. It will open when ready.

If you didn't plug the vacuum valve back into the new exhaust, well there is your issue

11-25-2014, 01:47 PM	#2
Kgolf31 Brigadier General 460 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Wait till after startup. There is a vacuum valve that is closed during cold start-ups. It will open when ready. If you didn't plug the vacuum valve back into the new exhaust, well there is your issue
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