Quote:
Originally Posted by EricP3
I recently discovered this as well. I had a single mid pipe installed and was wondering why it was louder in 1st and 2nd gear and then quieter in 3rd gear and up. Turns out the valves close when you hit 3rd gear unless you give it lots of throttle like others have said. I ended up unplugging my flaps again so that I get the same tone throughout.
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Thanks boss, any codes or lights on the dash?