Thread: found out something interesting about the 1M exhaust...
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      12-10-2012, 10:36 PM   #33
Papethova
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Drives: '08 135/ '11 1M
Join Date: Oct 2007
Location: at Death Valley 127

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so we have 3 variations of mid pipes??

n54 cats and resonator
n55 no cats with resonator
1M cats with no resonator
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