Quote:
Originally Posted by BlackF82
Oh no, definitely not engine: the car runs as strong as a million horses. Some muffler shop just cut the resonator and welded 2 small pipes (the length of the resonator) I think H-like setup. I drive in sport or sport+ all the time and flaps are fully open. At rare times that I do drive in efficient mode, the sound is quieter as intended so definitely no flap related issue.
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The flap is not always open in sport plus when driving around unless you have disabled it by unplugging/coding yourself