Quote:
Originally Posted by 9vapors
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I drive in sport mode most all the time (unless wife and kids are in car!). So the WG should be delayed- I'll test it out in the morning to see if the flutter eliminates in one scenario or not.
The sound I'm referring is on the building of boost at the beginning of the throttle press. There's a flutter like something is messing with the turbo spool or vacuum leaking repeatedly at a certain pressure or something weird.
But there is still enough pressure built to give a proper recycled air 'whoosh' when releasing the accelerator which has me confused.
(I've had a 18# boosted A4 before so I'm not that new to FI...just new to this X5M)
I wonder if a constant misfire would sound like this..but I've no reoccurring code after clearing them initially.