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149 Posts
Discussion Starter · #1 ·
speedo reading 60 mph i will be doin 64.8 with larger tires according to tire rating info what if anything would i do to correct the speedo reading besides remembering im always going faster than i should lol
 

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1,298 Posts
I bought the Flash Cal. It gives a digital readout. Also reads codes and tells you what the codes are also eareas the codes. Has lots of other things like day time running light adjust to different lights. Tire pressure adjust. Tire size adjust. All the options for door locks and light delays. Easy to use.
 

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AEV ProCal will take care of that for you too.
+1

If you buy this off someone, make sure they set their Jeep to factory settings. ProCal can only be used with 1 VIN number.
 

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2,299 Posts
Flashcal, Procal, or dealer. They all work. I don't like going to my dealer, but I'm only speaking on my own behalf.
 
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