Thread: Quick Z4M Tune Questions
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      11-04-2012, 09:38 PM   #32
habitat412
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Drives: 2008 Z4 M Coupe
Join Date: Mar 2011
Location: St. Louis

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The Z4M uses wideband O2 sensors hence why our ECU tuning isn't as specific as the E46 M3 tuning.
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