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Discussion Starter #1
Hey guys I'm planning on getting a dual exhaust set up with 2 Flowmaster Super 40's on my 2010 3.5L sxt and was wondering if my fuel economy would be negatively affected if I were to add an exhaust cut out on both sides. I don't know much about exhaust cut outs only that a friend has them on his 3.5L and it sounds sick. Another friend told me that it will burn my fuel more quickly so I am hoping to get more info. Thanks.
 
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