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I have h-pipe, catless DP, 49-state high flow cats in the mid-pipes, h-pipe after those cats. Burbles just fine (and tune seems to matter on that). System is full 2 1/2" dual.
Filippo
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2011 35i MT Atacama ... lots of bits. Full Öhlins TTX custom suspension. Build thread.
Build sheet. Currently finishing suspension, fuel, ignition system with Barry Battle @ 3DMMotorsport. |