Start with auto trans and rubi tires and 4.10 gears. Increasing tire size to 33.5 brings down mpg. Then by changing from 4.10 to 4.88 gears and super chip, mpg will go back up? Never tow. Mostly street use. Is that what I leaned today?

 

i saw -2mpg upon switching from stock x tires and steel wheels to to rubicon take off's which are approx 31"...

pairing superchips with gears will help with mpg and power loss

 

Yes, you will lose mpg when lifting and going to taller tires. 'Most' (not all) have regained some mpg after re-gearing, as it brings you back to more of a stock ratio. And most (not all) superchips users have been reporting mpg gains with it.

Just depends...

 

Superchips definatley increased my MPG after installing 33x12.5 tires. Did not regear so I also added K & N Cold Air Kit and MBPR performance exhausts to get the power back. MPG gain +2