Did a search with no results...so I will show my ignorance by asking the question. Have 06 EG standard and would like to go to 18" wheels front and back. Am concerned that MPH and odom will then have false info. For those that have made this swap,,,, does the speedo have to be recalibrated?
Thanks....JohnB.

 

S&S makes a calibrator that goes behind the RH side cover (behind the ECM). It plugs in the speedo wiring harness. You then must calibrate it using several different methods for it to read correctly. Go to S&S website and they have instructions on their website on how to install it and how to calibrate it.

 

There was a thread that talked about this under regearing the 07, might get some info on a search of it.