Bumper weight vs perfomance
JK Freak
Joined: Jun 2011
Posts: 667
Likes: 1
From: WA
I'm running front and rear steel bumpers , steel light bar, 4.10 gear and 35s and lost in total about 3.5mpgs but adding the superchips I gained most of it back with it. Something like this is a nice fix to the minivan motor we do run. But regearing will give you a better Long term benefit if you ever decide to go larger with tires. The superchips you can always adjust as needed.
Thread Starter
JK Enthusiast
Joined: Jul 2014
Posts: 455
Likes: 0
From: Bluffton SC
I installed a 3" lift on my wife's 2012 Ruby, 3.73 gears and 33" tires. I also added a winch and front & rear steel bumpers. She didn't lose more than a mile per gallon. That's calculating fuel used & fuel added to the tank, not the computer in the Jeep. Those are good investments if you off road versus a minor loss of mileage.