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      07-13-2009, 04:40 PM   #6
Car Guy
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Drives: 2007 M Coupe, 2008 M3 Coupe
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The extra bung can be used for a wideband AF sensor, maybe at the dyno or for a guage in your car. Lots of good uses.

Bill- 2011 Lotus Elise R, 2010 Porsche Boxster S, 2005 Mini Cooper S BMW CCA Member # 389948
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