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      01-09-2013, 09:32 PM   #2
Suds
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Drives: 2015 M4 & 2011 S4
Join Date: Aug 2010
Location: Lone Star State

iTrader: (1)

I changed mine at 23k miles, was having a misfire after installing Cobb S1 Aggressive.
I had run Dinnan S2 for about 12k miles before i went to Cobb.
Misfire is now gone!