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Old June 10th, 2003, 06:53 AM   #1
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calibrating speedometer

anyone know how to recalibrate the speedometer after putting on different size wheels and that sorta stuff? is it even possible at all?
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Old June 10th, 2003, 10:46 AM   #2
 
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i dont think you can recalibrate by yourself...
ask a friend to roll at the same speed, adjust it by hand... someone mentioned it before...
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Old June 10th, 2003, 10:49 AM   #3
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your outta luck.
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Old June 10th, 2003, 11:22 AM   #4
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thought so...so how do they recalibrate for jacked up pickup trucks?
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Old June 10th, 2003, 11:25 AM   #5
 
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actually... there is a way... i dont if i saw something online or if it was in a car magazine, but i think there is a way to realibrate it.
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Old June 10th, 2003, 04:45 PM   #6
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nope not on this car, some yes but not on this one.....
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Old June 10th, 2003, 05:04 PM   #7
 
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OF topic sorry: Getto Green u have any other pics of ur car
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Old June 11th, 2003, 04:46 AM   #8
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aftermarket gauges sometimes let you but not these... and driving around at 60 while trying to shove your speedo needle on sounds pretty damn stupid to me.
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Old June 14th, 2003, 09:56 AM   #9
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for those jacked up trucks, and most american cars Hypertech makes a power programmer with which you can enter in your tire height and the computer will automatically adjust for it, theres a bunch of other settings u can mess wtih too like timing, speed limiter, shift characteristics, wish they made something similar for the hondas
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Old June 14th, 2003, 10:58 AM   #10
 
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Quote:
Originally posted by HIREN on June 14th, 2003 at 11:56 AM

for those jacked up trucks, and most american cars Hypertech makes a power programmer with which you can enter in your tire height and the computer will automatically adjust for it, theres a bunch of other settings u can mess wtih too like timing, speed limiter, shift characteristics, wish they made something similar for the hondas
That would be very expensive to put into a car. Really how off could a car speedo be compared to a jacked up truck.

Though it would be really cool to have and use .



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Old June 15th, 2003, 10:19 AM   #11
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Quote:
Originally posted by PlumAccordCoupe on June 14th, 2003 at 11:58 AM

That would be very expensive to put into a car. Really how off could a car speedo be compared to a jacked up truck.

Though it would be really cool to have and use .
it only costs around 300 for all the applications they make, and it plugs into the OBD II diagnostic port

really worth it for the stuff it does, my friend got really good gains with it on his GMC Sierra 5.3L ext cab truck
he ran a 15.1 with i/e and the hypertech power programmer
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Old June 15th, 2003, 06:39 PM   #12
 
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The speedo needle automatically sets itself when you turn the car on, you just can't tell because the pin is in the way. If you take the pin out, the needle will just hang down until you turn the car to the on postition. But then it snaps up and holds itself. It rests so the the top of the needle is just below the hole for the pin. The pin comes out with a gentle pull with some pliers, and it pops right back in.

Hope that helps.
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Old June 15th, 2003, 06:43 PM   #13
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Quote:
Originally posted by Suhvas2001 on June 10th, 2003 at 08:04 PM

OF topic sorry: Getto Green u have any other pics of ur car
click my www icon....
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Old December 28th, 2005, 03:51 PM   #14
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Bringing back an old thread bc I have this same question....

Isnt it just a math formula? there by changing the formula would fix the problem... the needle just doesnt move by itself... it runs from an electonic source that has to have sum kind of math. You cant just say im going 50mph without a formula.... thats why its written 50 miles over "/" 1 hour. Basic physics.

So wouldnt there be some way to alter the formula? Just a thought.
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Old December 28th, 2005, 04:12 PM   #15
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It's programmed into the ECU which isn't flashable and there's no way to reprogram it to the best of my knowledge, at least on this car. Like HIREN mentioned above, Hypertech makes stuff for domestics like if you swap in different rear end gears, or have huge tires for off-roading. You could ask at a Honda dealership too. Nissan has CONSULT-II programmers that "might" have an adjustment for that, but I haven't heard of anything like that for Hondas.

If you just want to know how fast you're going for real, get a GPS and see what your actual speed is at various indicated speeds. My Maxima's speedo is about 2.5 mph fast at 75 mph. So the GPS says 75.0, but the speedo says 77.5. Our Highlander is dead on accurate north of 100 mph and Accord speedos are known to get *extremely* "fast" above 100 mph. As in, 140 indicated, but you're really only doing 130 or so. over 10 mph fast.
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Old December 28th, 2005, 04:14 PM   #16
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I believe thats true to an extent. The speedometer is pre-programed using that formula based on the stock diameter of the wheel and tire. Once you change that tho, the sytem wont automatically recalibrate itself to the new diameter. The difference is minimal tho. At a worse case scenario it my be off by no more than 5 miles an hour. Again thats worst case, but usally its like 1-3 miles off.

LoL...what he said ^^

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Old December 29th, 2005, 10:04 PM   #17
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My only issue is that I like to go no more than 15 over..... and haha the cops on most of the roads i drive wont pull you over unless ur 16+ and yeah ive done that once... when it was 215x55x16 it read 61 and clocked at 61 by a cop now I think its off by about 5mph at 60 not ure exactly.... my friend (00 av6 sedan) and i did a 60 run and i swear he was reading it off be i did 60 then to 65 and his numbers whent higher then lower so yeah i think he was on some crack then.... HAHA! weee i need sleep!

the main thing I dont like though is the odometer readout will be extremely off after a period of time. 3% with a large enough amoutn of miles is a huge error.

Why did honda give us an ECU like this!!!! GAHH can't have anty fun with it!
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