Posted by Ron in Indiana on Monday, September 19, 2005 at 12:51PM :
Is anyone running an aftermarket air box on their Cummins? If so what brand and does it make a difference mileage/performance wise? We have a 01 3500 HO with a 6 speed and an '03 3500 with an automatic that has 4" exhaust and chip, looking for mileage boost more than anything. I know some will say check the TDR but I trust the judgement here.
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