Regearing?

[guruerror]

You should be good to go then...looks like the Flashpaq allows you to adjust tire size and gear ratio just like my Cortex.

With some 4.10s and a re-program you should get your pep back, your shift points and cruising speed will be closer to normal, your speed-o will read correctly, and you may even get a whole MPG out of it.

[tyler1bo]

Not a WHOLE MPG!!!! Yes it's either 4.10's or 4.56's..

[Bimmer9938]

I did 4.88's with 38" Toyos and it made a HUGE difference. That gearing works well with my new 40's as well.

How much did it improve your MPG?

[2010_5thgen]

so 4.10 or 4.56 are good for 38" tires? i think im going to start with a tune, but im gonna take mine to a shop that has a AWD dyno to do a custom tune.

[tyler1bo]

A custom tune will probably be the best. You probably need to look at 4.56 to 4.88 gears. I believe you have stock 4.10s. I think I may go with 4.56 because I'm not sure 4.10s will be that much of a difference. Do any of y'all know a good place to find gears?

[guruerror]

www.trailduty.com...more specificially: http://www.trailduty.com/index.php?c...0cd11dd8a5fc9b

[MVR 155]

If you struggling with the idea of 4.10 vs. 4.56 then I would suggest using the calculator to see what your highway cruising RPM's will be, if you will be fine with the 4.56's then I would go that route as it will likely yield better mileage and pick up around town and have a minimal effect on highway mpg's.

Also keep in mind that while 4.10's will get you back to stock RPM's you are still moving a larger amount of unsprung weight with larger wheels tires so you likely will still be a bit short on performance vs. stock with the 4.10's.

[Stellar]

I absolutely recommend 4.88's if you're going to spend the money for new ring and pinions. Throttle response will be dramatically better and if you choose to run 40's down the road or tow, you'll make it easier for your motor to get the power to the wheels.