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      12-09-2012, 04:29 PM   #22
Vrooom :)
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Originally Posted by jb2178 View Post
You should do us all a favor and get a dyno done before and after. I'd really like to know what gains can be had from removing those extra cats. Not that it would be the same on my N51 but it would still be nice to have real numbers.
According to this thread,

+9 HP and +3 Torque
2009 128i Coupe Crimson Red MODS: -Injen Intake-Magnaflow Exhaust-Carbon Fiber Spoiler - Carbon Fiber Grilles - OZ Ultraleggeras - CF Mirrors
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