Quote:
Originally Posted by Lotus7
Or you can just disconnect and plug the vacuum line on the existing 35i Dual Path exhaust flap valve controller, which effectively bypasses what little muffler restriction that exists in the OEM muffler, and gives you a direct system all the time rather than only at high-boost conditions.
Doesn't increase the maximum engine power, (since the flap valve opens anyway at full throttle) but does make the car sound louder and deeper all the time for absolutely no cost, if that's what you're looking for.
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Wow this is an old post haha. Anyways this would be the "golf tee" mod no? Does anyone know how to do it
For the x3 yet?