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04-30-2017, 03:15 PM
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#2
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///M Powered for Life
Drives: E90M/E92M/M4GTS/M4GT4/M6/X5M
Join Date: Sep 2010
Location: Greenwich, CT
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There seem to be zero success cases of aftermarket X pipes with HFC not causing a CEL without a tune.
I think you will need a tune
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