Quote:
Originally Posted by Vic55
Have you checked your vacuum lines on the axle back? If it was not plugged or reinstalled correctly you could be down on power.
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I don't have my F90 yet, but I don't believe vacuum is used for the exhaust flaps anymore. I'm not sure what needs to be done, if anything, if you unplug the electrical connection to the flaps. Since the new system doesn't have the flaps, I don't think it would cause the car to run poorly. They've gone to electrical control of the waste gate on the turbo and there's no need for a vacuum canister anymore.