'04 2500HD questions
A true dual is when the exhaust goes from the headers all the way out without using the same pipes. Most trucks, stock, have a y pipe, then it a ll exits through the same pipe.
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USA1 Z06
Silverado, Sierra & Fullsize Pick-ups
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Feb 12, 2011 12:07 AM
grinnellbrent
Silverado, Sierra & Fullsize Pick-ups
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Jan 7, 2007 2:06 PM
04, 2007, 2500hd, 60, 60l, bear, black, blackbear, chevy, custom, flowmaster, performance, programmer, programmers, silverado, tune




