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Old 06-04-2004, 05:55 PM
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how much will my speedometer be off if I install 4:10 gears? Will it be off at all?
Old 06-04-2004, 06:11 PM
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It'll be off by quite a bit, actually... you'll need to recalibrate it.
Old 06-07-2004, 03:03 PM
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If you have an M6 and go from 3.42 to 4.10, the speedo will be off by 20%. At 60mph, it will give you 72mph.

If you have an A4 and go from 3.23 to 4.10, its even worse. The speedo will be off by 27%. At 60mph, it will give you 76mph.

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Eric D.
99 Firehawk M6
Old 06-09-2004, 10:20 AM
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holy crap. That's really sucks. How can I get it recalibrated?? Thanks again for the info....
Old 06-09-2004, 12:46 PM
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Originally Posted by 2002BlueWS6
holy crap. That's really sucks. How can I get it recalibrated?? Thanks again for the info....
Got to get the ECU reprogrammed... You can buy something to do it, or go to a speed shop / friend with the right tools. See www.ls1speed.com they do it mailorder...
Old 06-09-2004, 07:44 PM
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i have the slp speedo recalabrating box
if you would be intrested it works great i used it when i when from 3.42 to 4.10 but then did cam and stuff so had to do computer so don't need it any more lett me know. harley_hunt@yahoo.com or call at 256-509-1818




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