Which Speedometer Calibrator are you using for Larger Tires

Chevy4Life · 10-13-2008, 02:01 PM

I have a lift with 38" tires and my speedometer is about 20% off. I had the edge w/ attitude that read out the speed, but I just sent it back. And I want the DIC to read out my correct MPG and Miles traveled, etc. I wanted to know which products are guys using; Hypertech, Superchips, ProComp, or are you able to go to the dealer or anywhere else to get this done, and how much does that cost?

**Meyerperformance** · 10-13-2008, 02:51 PM

Most people just use whichever brand they prefer. The DIC is seldom accurate for many. So i would just get a tuner to calibrate the speedo correction. And then hand calculate to get you real mileage range and mpg's.

Tyler

**Tow Master** · 10-13-2008, 10:55 PM

I bought a PPE and it calculates the speedo. You add your tire height in inches (mines 32) then it works from there!

**BigRedChevy** · 10-13-2008, 11:02 PM

If you are satisfied with the edge tuning then just buy a cheap programmer to do the speedo calibration. just be sure that you get one that will allow you to install the stock tune with a speedo calabration. SOme will require you to add power in order to adjust the speedo.

**daddysLBZ** · 10-13-2008, 11:06 PM

Most just ask that you measure from the ground to the level part of top of tire,then type in the numbers,MOST tuners offer this feature...My speedo will say 73 when I am actually doin 70[verified by my GPS and the Superchip plugged in the OBDII]

**08DMAXX** · 10-13-2008, 11:20 PM

I tried the Pro Comp Accu Pro ($200) for about a week but took it off cause im going to get a banks six gun and I didn't wana waste money on it. Going to put that 200 toward my six gun. But it did work well.

silveradoguy98 · 10-14-2008, 09:16 PM

i bought a superchips tirepaq. Its pretty cheap and you can upgrade it online to the superchips flashpaq tuner. Tirepaq works great so far for me...

Chevy4Life · 10-14-2008, 10:42 PM

Can you use the calibrators for diesel and gas? or is it for certain models? For instance can I use it for my 2003 duramax and also use the same calibrator chip for a 2002 8.1L Gas silverado?

Chevy4Life · 10-14-2008, 10:42 PM

By the way thanks for the responses, also can you go to the dealer and get speedometer calibrated?

**BigRedChevy** · 10-14-2008, 10:47 PM

Some dealers will do it and some will say that they can't.