Ok i have a question about speedometers i need mine to be exact because im starting to get worried mine has been inaccurate since i got the truck and i cant get another ticket for speeding. so since i have a cable driven speedo can i take the speedo cable from a 94 4runner and put it in my truck and get a superlifts speedo re-calibrator or do i have to get the cluster also?

 

I just use the speedo on my GPS. Very easy install. Plug it in and stick it to the windshield.

 

Use a GPS or pace someone with an accurate speedometer and then you'll know how much it is off.

 

i too recommend the gps method. it completely eliminates variables like tire size and gearing, correct speedo model, etc.

you could get a used tomtom unit pretty cheap on fleabay. heck, even borrow one for a day and just figure out what your speedo is off by.

but remember that a speedo that's "off" is not always consistent. it's could be off more the faster you go, so check it at 25mph, then 45 mph, then 65mph (on your speedo), and see what the gps says you're really doing.

once you know the real speeds, you can make new little marks with a couple tiny pieces of masking tape or something.

 

i know how much its off and i dont really want to buy a gps if all im going to do is use it for a speedometer so will my idea work or am i wrong

 

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