Hi Roland,
Ive got a fg g6e turbo zf 6speed. std ratio is obviously 2.73.
ive put a different diff in it and the ratio is 3.07.
how do i cange the ratio correctly in the pcm so my dash is accurate.
it is currently out about 12-15 kms.
ive already changed the diff ratio under the axle sub heading, but it hasnt changed my speedo calibration.
is there another setting that needs to be changed.
thanks alot