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Updating speedometer???

1.9K views 16 replies 11 participants last post by  K5Cruz  
#1 ·
just wondering how i could update my speedometer to my tires? do i just take it into the dealship or what? just want to try and get a better reading for my overhead MPG, and the right number of miles on my odometer.

thanks
 
#2 ·
im not sure if they could do anything that is bigger then what a factory truck would come w/.....eg. power wagon

well at least i tried...they said anything a bove an o6 the starscan doesn't have that option anymore....but pls correct me if im wrong.

not sure of the 6.7's but i would be a ble to adjust w/ a smarty. edge does it but only gets corrected on the module not the actual factory guage
 
#3 ·
yeah it does on the edge but not on the factory gauges thats what im looking for lol
 
#4 ·
I don't think you can have the stock gauges read the right speed. I do mine through the edge. The dealer will not help. You can take it to a speciality shop and have the speedo readjusted to your tires. that is the only thing I can think of.
 
#6 ·
mannn, what about some 37's lol, i wouldnt mind paying 65 bucks for it to work :whip:
 
#7 ·
Let me know how you make out. My speedo is out about 5mph with 35" procomps. I'd like to know my actual milage.
Thanks:cbadge:
 
#9 ·
oohhh yeah and edge isnt a programmer right its a chip or whatever,
 
#14 ·
damn yeah kinda high just to calibrate the tires ya know ha.
 
#11 ·
yeah im pretty sure that the stealer cant adjust an06 and above , well atleast the biggest is a 33 which i do believe is the size of the powerwagons setup.
 
#12 ·
The dealership can do it, but i think they max out at about a 34.5 inch. So your spedo wont be 100% but better then it was. i think mines out 10km/h at 100km/h so about 10% with 37's
 
#13 ·
max tire size from the dealer (with the starscan tool) is the stock powerwagon size - 285/70/17, or roughly a 33" tire.
 
#16 ·
i have the new bully dog power pup E3, and it does the tire/speedo correction. that's actually why i bought it. that and to raise the speed limiter. it is their entry tuner. it has only one tune which is 50hp and about 100lb/ft. but you can alter other settings as mentioned. also does the forced dpf burn. i didn't need anymore power due to having the edge/attitude.
 
#17 ·
I just watch my GPS and set it for mileage checking. If you have one that might be a thought. I rarely look at my trucks speedometer anymore.