go to the performance section and look at the sticky's for all the info you need one actual dyno results on exhaust's and intakes. dont believe any gain #'s you read on a box their BS. Also there is no such thing as "increasing hp"
AND "improving mpg". Sorry man but those are two oposites and the only way to get better mpg is a really light foot. the fraction of fuel savings from that new part (if you never floor it), will probably not pay for itself before your onto your next truck. But most of knew that and dont care before we bought our trucks. besides, the grin i get on my face when i mash the throttle is worththe extra $ in ga s
