Shift Point Adjustment, Auto trans

[JT_Law]

Since I dropped the 31's on my shift points seem a bit messed up, on any kind of hill on road seems i am constantly having to gas it to kick down point to maintain speed or it feel sluggish.

I know there are power chips for the engine, are there any chips out there, or a way to adjust the shift points to comp for the new tires?

This is a '98 XJ with 3.5RE and 3.55's
Thanks

[sw_mi_xj]

you need to change the vss speedo gear , check the chart here

http://www.go.jeep-xj.info/HowtoSpeedoGears.htm

find tire size / gear ratio = chrysler part #

[JT_Law]

Hey thanks, wondered if I could get away with just swapping that, didn't know if it would just change the speedo or if it would effect the computer too