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It may be possible, but unlikely on a nearly stock truck. A while back I got 25.19 mpg hand calculated at 65-70mph the majority of the time, its usually around 22-24 on the highway so it may have been a fluke but I was still impressed. I really think the RDL manifolds and 2" up pipes helped it out possibly 1mpg, before my highest was around 24.1mpg I believe. In town I get significantly less:eek: anywhere from 13-17.
 
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