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Old 06-05-2013, 10:13 AM   #3
Whitey-AMG
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Join Date: Dec 2004
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Default Re: Can SCT flash tuner correct speedo ?

Quote:
Originally Posted by Theo@BluePower View Post
The best way to fix it is to run the car on the dyno @ 100klph and work backwards to the tune to correct it. This way it will be right on 100..

I don't think user settings has the functions for you to change yourself..

Thanks Guys
The SCT device allows for rear end ratio to be changed and also REVS per MILE input. I have put in the rear end ratio for the GT and also the REVS per MILE ( 783 ) based on the Tire calculator - here :
http://www.gordon-glasgow.org/tirecalc.html

I'm thinking maybe I should just reset the REVS per MILE back to factory setting ? I'm guessing it may not be correct as it may vary from tyre to tyre and how much air pressure and tread you have left ?
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