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Originally Posted by 13M5F10
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Originally Posted by ChrisNich117
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Originally Posted by 13M5F10
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Originally Posted by ChrisNich117
I was told by my tech that the car uses an electric pump located in the rear for the vacuum system. I've never had any loss of power for either of my cars with the muffler delete and the tubes were simply disconnected and tucked away. Has anyone actually seen where these tubes lead to?
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They lead to a vacuum pump in the trunk.
This isn't something new, it's a known issue amongst the F10 M5 that when you disconnect these hoses and do not plug them, you will have a loss in power due to a leak of some sort. I thought it was boost operated but I may be wrong, could be part of a larger system. Anyhow, you will feel like you have no boost when ridin with these open. |
It's purely psychological 
The power is there, we've just been too spoiled by how much power these cars make! |
I wish that was the case.
There's a clear loss in power with these not plugged in. I've personally tried it plugged and unplugged.
Google it and see the countless complaints about the issue. |
I just posted the link above, check that out.