SGT2666 Posted November 7, 2007 Report Share Posted November 7, 2007 My speedo appears to be a couple miles an hour off. Whats it take to correct the speedo? Link to comment Share on other sites More sharing options...
ShelbyDude Posted November 7, 2007 Report Share Posted November 7, 2007 Did you change wheel size? That throws it off. Any dealer can hook it up and correct it. Link to comment Share on other sites More sharing options...
RogerS Posted November 7, 2007 Report Share Posted November 7, 2007 Did you change wheel size? That throws it off. Any dealer can hook it up and correct it. I know he went to 20" wheels don't know about tire size though. Link to comment Share on other sites More sharing options...
ShelbyDude Posted November 7, 2007 Report Share Posted November 7, 2007 I know he went to 20" wheels don't know about tire size though. That will do it. I know the system is set up to recalibrate 17 and 18, but not sure if they have 19 and 20 in there. But anytime you change wheel size the speedo has to be recalibrated. Otherwise it throws the speedo off. Link to comment Share on other sites More sharing options...
SGT2666 Posted November 7, 2007 Author Report Share Posted November 7, 2007 So its just a parameter in the computer? hopefully its easy. :happy feet: I'm running 20x285x30s and 20x255x35s Link to comment Share on other sites More sharing options...
frankieboo69 Posted November 7, 2007 Report Share Posted November 7, 2007 My speedo appears to be a couple miles an hour off. Whats it take to correct the speedo? mine was way off almost 10mph when i got it !!! call your dealer they have to get one of the tuners sent from Shelby on loan to recalibrate it !!! thats what they did to mine , now its perfect !!!!!!!!! :D Link to comment Share on other sites More sharing options...
SGT2666 Posted November 7, 2007 Author Report Share Posted November 7, 2007 mine was way off almost 10mph when i got it !!! call your dealer they have to get one of the tuners sent from Shelby on loan to recalibrate it !!! thats what they did to mine , now its perfect !!!!!!!!! :D EEK I'm running the FRPP tune for the Whipple... Link to comment Share on other sites More sharing options...
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