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      08-20-2012, 12:52 AM   #10
mcmn
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Drives: MY10 AW 135i
Join Date: Jun 2011
Location: Melbourne

iTrader: (0)

I know someone who had catless downpipes on his racecar. He was saying you have no issues as the o2 sensors pre and post are still in place and function.
Appreciate 0