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Discussion Starter #1
so i have adjusted for my 33's and the gear ratio is set at 3:73, but my speedo is still off by like 10 mph on the highway. what do i have to do to correct it? is it possibly because the chip hasnt been updated since late 09?
 

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Go back and check the tune-- see if it shows 3.73 axle. Also see what it says for the tires-- For example-- I have 265 tires and they are 32.5 inch. So if you used 33-- After you get it close-- you can check with a GPS unit and change by small amount to be right -on.
 

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yeah, i talked to the guy who i bought it from and he said he had the same problem, he had to say they were 31.75" and then it was right on for his 33's, but i'll monkey with it some more...
 
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