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      12-22-2012, 10:18 AM   #2
Pig Farmer

Drives: 2009 BMW 135i
Join Date: May 2010
Location: Florida

Posts: 734
iTrader: (0)

Don't expect any real power gains with the BMW PE, but the car will definitely sound more powerful. The tone is deeper, with a bit more volume, but not obnoxious. For power gains you need to look at downpipes, but that's not in the "keep it stock" category.