Are you correcting for the oversize tires? Remember that your speedo gear is made for 235-75s. 33s are quite a bit bigger, so your indicated speed/mileage will be out by 15% or so...

PHIL


1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/