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Old 05-05-2010
TexasRanger's Avatar
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backwards muffler?

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i am interested in putting this muffler on my truck. its stamped flowmaster, i think it is a 40 series. the problem is that it is stamped 1 in and 2 out. i need a 2 in and 1 out. what would happen if i run this muffler in reverse?


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Old 05-05-2010
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Why do you need a 2 in? I'm pretty sure its only designed to be ran one way. I did some quick googling and someone called a Flowmaster tech and he said it could cause back pressure issues and overheating.
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Old 05-05-2010
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Yeah slowmasters have the baffles in them that are like this < and pointed into the exhaust so if you run one backwards you're gonna have problems lol
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Old 05-06-2010
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yeah thats what i figured. thanks guys
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