Will I get trouble codes when I change the ratio of the differentials?

[David.X5]

I agree - as long as you change both diffs, the car won't know the difference. Speedo is based on one of the rear wheel speed sensors. Only is wrong if you change the tire size to something with a different outer diameter.

[bcredliner]

Originally Posted by David.X5

I agree - as long as you change both diffs, the car won't know the difference. Speedo is based on one of the rear wheel speed sensors. Only is wrong if you change the tire size to something with a different outer diameter.

I bought both front and rear diffs and staying with stock size tires and rims, the staggered 87s rims and tires that came on a 4.6.