Quote:
Originally Posted by dcorn
Damn, it's like there are constant reminders on this site of why we shouldn't go to BMW Fairfax. That's nuts. What is this vacuum hose you guys are talking about? Why on earth is there a vacuum hose connected to the exhaust at all? Does it lead back into the intake manifold? Is it the EGR system? Sounds very fishy.
This whole issue with BMW and warranties is beginning to sound like Mitsubishi when the Evo VIII first came to the US. The dealerships were completely voiding warranties for every possible mod, even a turbo timer or boost gauge.
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The vacuum hose is used to keep the flap in the driver side muffler closed. A lot of people here do the "golf tee mod" which basically consists of removing the vacuum hose and plugging it with a golf tee so the flap is always open.