View Full Version : I Need Help With My Speedo

04-21-2009, 02:11 PM
i just put 4.10 gears in my 1999 cobra and now my speedo is about 20 mph off. i was wondering what i needed to do to correct it .i was told i needed to go to a ford dealer and have it reprogrammed. but then i also heard you can buy a little module that plugs in ,is this true?:rolleyes:

04-21-2009, 05:21 PM
We prefer NOT to see a picture of you in your speedo!

04-21-2009, 05:45 PM
I agree with Dave, no speedo pictures please:p

here is what you need. http://www.dallasmustang.com/mustang-parts/product/SPEED-CAL-1994-2004-5-SPEED-EXTENDED-RANGE/7626