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      01-20-2012, 07:22 PM   #7
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Drives: 2011.5 e92 m3/Ford Raptor 6.2
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Originally Posted by geneatals View Post
***I thought the "ting" sound came from the rpi mid pipe+gt axle back...

gt+stock mid pipe produced no ting...perhaps I am mistaken...

either way..rpi section 1 and section 2 pipes are still the same for both gt and gtm...

The "ting" sound comes from the dramatic increase in exhaust velocity when the cats are removed on the GT system. The side inlet muffler design on the GT doesn't allow the exhaust gases to flow properly. The GTM mufflers have the rear inlet and are very loud!
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