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      07-06-2008, 08:12 AM   #4
Patricius
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Drives: 04 325xi, 05 M3 cpe, 08 M3 cpe
Join Date: Feb 2008
Location: Philadelphia, PA

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My guess is that software modification will come into play as we see more people upgrading intakes, exhausts, etc. to get the most out of their modifications. There will probably be a slim margin of improvement in power/tq with software alone, but not nearly as much as with the 135i/335i.

The biggest improvement I could see for software alone is to increase fuel mapped in 1st gear from a dig for DCT owners and a more snappy sport+ response.