correct I meant to say odometer. The reason for the 10 measured miles is to
get closer to cut down on the error since most odometers read only in 1/10
of a mile. If you really want better do it over a longer distance.

"My Name Is Nobody" > wrote in message
news:MY3Bh.4942$H77.3697@trndny08...
>
> "Les Benn" > wrote in message
> ...
>> There should be a speedometer calibration shop in your area. Probably
>> used by the local police too. I was told last time I had an issue with
>> calibration is to drive a measured 10 mile distance then note what your
>> speedo reads,
>
> This method requires using your ODOMETER and is limited to the smallest
> unit measured by the odometer 1/10th of a mile degree of accuracy,
> combined with the operators level of accuracy. Basically ok as a ballpark
> indicator...
>
> It is much easier to look up this already "know information" or go to
> someone who already knows it.
>
> Is it a simple computer recalibration? Or are you going to pull your
> transmission and change speedometer gears? Or are you forced to choose to
> live with the discrepancy?
>
>
>> using the difference they can put in the needed pieces parts to make it
>> read accurately.
>>
>> "mustangGT_00" > wrote in message
>> lkaboutautos.com...
>>> Good day guys,
>>> I got 4.10 gears installed in my 00 GT. The speed odometer is not
>>> reading
>>> the actual speed. I know SpeedCal is the needed thing in here, but I'm
>>> just too busy with school and work. I talked to some people and it seems
>>> like I need an expert to talk to. Can any one help me with tips about
>>> this
>>> part (function, price, installation, etc..). Your help is appreciated.
>>> I Mak
>>>
>>
>>
>
>