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"Tobias" - My 2013 135i
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12-20-2019, 10:31 AM
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inevitab1e
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Drives: '13 135i N55 FBO
Join Date: Feb 2017
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Originally Posted by
Matticus91
Yes, stock cat that has been emptied.
I wonder if that has anything to do with the higher RPM difference on your Dyno chart. I wonder if the gutted cat is still more restricting than going straight to a DP
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