I currently get about 13 miles per gallon - if i put dual exhaust on my truck will i improve my gas consumption? Will it void my warranty?

 

it wont void the warranty as long as there is a muffler haha, anyways yes it will help with gas mileage as long as you dont drive like a nascar driver because people tend to drive faster with more power, so its all comes down to how you drive it, me personally i have dual flowmasters 40 series and a k&n intake which i highyl recommend and at first i had poor gas mileage because i drove it faster, then when this summer hit i realized i was being a fool so i drive a lot slower now, plus when your on the road theres no need to drive fast all of the time, anyways just putting in what i know from experience im sure others will agree and disagree.... so goodluck and go for the exhaust. haha

luke,

p.s if you do the exhaust i recommend the intake because they work really well together, later