Re gearing fx4
Beeps and Boops
Joined: Oct 2020
Posts: 2,667
Likes: 1,786
From: Iowa
That's right - the front should be specified as "for IFS" or "reverse rotation." Ford also made a 8.8" rear end and those gears won't work for you.
How's she goin' eh?
Joined: Jul 2015
Posts: 4,375
Likes: 604
From: South Detroit
Yea, let the tuner device know you've changed gears. I believe there is a section in the settings that allows you to change that value.
if you have a tune you can gain some lost power back. Still tire size would be what i would do first.
if you have a tune you can gain some lost power back. Still tire size would be what i would do first.