speedo re-calibration after gear install

[cjist1]

I am buying 4.10s this spring. How do I re-calibrate the speedo on a 2001 GT 5spd. What do I need to buy?

 

[XTONKAX]

SpeedCal, chip, or a programmer of some sort. SpeedCal is ~$90.00.

 

[Bone Racing]

brothers speedcal
dallas mustang speedcal

 

[el_kid_1]

brothers speedcal
dallas mustang speedcal

Or you could have your ECC reflashed for gear correction...no need for speedcal.

http://www.modularfordpowerhouse.com/products.php?id=47

 

[PDubs]

Abbott ERA is another option.

 

[MineralG2k2GT]

You will want the SpeedCal. The advantage of the speedcal is you can adjust it for future changes to your car like if oyu get different wheels, tires or other gears in the car. All you have to do is just flip a few dip switches.