Programmer helps but 3.55 and larger tires don't mix well. Those are the gears I had before I switched. I'm saying after you change gears, you can put that info into the programmer and it will make it all mesh together. You select tire size, axle ratio and on my diablosport a nov setting. Stands for engine over vehicle setting, I know engine doesn't start with n but that is the acronym they used. Basically a ratio factoring in tire size and axle ratio that tells the transmission when to shift to overdrive.

 

okay but the spedo on the dash how would i get that moce acurate?

 

The tire size option on the programmer.

 

oh okay so that will fix it?

 

Yep. May take a few tries to get it exactly right as depending what psi you run your tires at, the tires may be slightly larger or smaller than advertised size. Not too hard to get it dialed in. I just checked with GPS to verify the speedometer.

 

alright thanks man im hopeing to get some gears comes tax time around