Couple of questions about Riss Racing Downpipes
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07-13-2009, 04:40 PM
Drives: 2007 M Coupe, 2008 M3 Coupe
Join Date: Aug 2007
Location: ATL, GA
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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