Extreme short sye recalibrating speedometer?? - JeepForum.com
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post #1 of 19 Old 12-29-2009, 12:03 PM Thread Starter
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Extreme short sye recalibrating speedometer??

I'v installed teraflex's es sye and now i have an electrronic speedometer whereas before i had a speedo gear.To fix my speedometer i have to buy,according to teraflex,Part# BLD33002 which is a calibration box and i believe costs too much.Right now i'm at about 10% off,more than the gps shows.Since i have the 42RLE trans i also believe that the shifting points are changed.What other options do i have??



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post #2 of 19 Old 12-29-2009, 05:23 PM
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(Your speedo was electronic before, it's still electronic. )
No other option.
Lots of calibration boxes out there, I know Dakota Digital sells one you can usually find for around $60. Check Summit or Jeg's etc

Dakota also sells tach signal adapters for engine swaps..

http://www.phoenixtuning.com/zenstor...FR4Eagod-gqfmQ


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post #3 of 19 Old 12-29-2009, 06:06 PM
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My Dakota Digital SGI-5 works great with my JB Conversions Super-Short SYE. It's around $60 at Summit.

They have also updated the SGI-5 with new software and the past occasional speedo bumping issue is fixed. I sent mine in for a free flash update. Works flawlessly now.
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post #4 of 19 Old 12-29-2009, 06:24 PM
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You could always take the Jeep in to the dealership for them to flash it for you, but... If you ever change gearing or tire size again, you'll have to pay more to redo it. With a kit like the SGI-5, buy it once, adjust it as many times as you need.


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post #5 of 19 Old 12-30-2009, 01:38 AM Thread Starter
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Quote:
Originally Posted by BlueFlame View Post
(Your speedo was electronic before, it's still electronic. )
No other option.
Lots of calibration boxes out there, I know Dakota Digital sells one you can usually find for around $60. Check Summit or Jeg's etc

Dakota also sells tach signal adapters for engine swaps..

Speed/Tach Interface : Phoenix Tuning
No,before i was using a speedo gear now i have a devise that calculate pulses or something like that to sent them to the speedometer/odometer.


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post #6 of 19 Old 12-30-2009, 02:36 AM
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Tru-speed by Superlift is what I put in my TJ. Other than a electronic control box not really any other way to fix it. Took a bit of driving around with a GPS and passenger with screwdriver to dial it in. Mine is behind the glove box.
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post #7 of 19 Old 12-30-2009, 02:56 AM
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how about a super chip would that work?
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post #8 of 19 Old 12-30-2009, 03:17 AM Thread Starter
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As far as i understand it,this is what teraflex suggests i get TeraFlex 004490402 - TeraFlex Computers, Chips & Programmers - Overview - SummitRacing.com ,quadratec can get it for me for 167$....


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post #9 of 19 Old 12-30-2009, 04:40 AM
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dakota digital in my 2001 for almost 2 years... with my JB conversions SS SYE..

ive had not a single problem with the unit.
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post #10 of 19 Old 12-30-2009, 05:53 AM
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I have the same terraflex set up you do. Go with the Tru-speed. Works great, easy install and calibration. You will net your cost on the first speeding ticket you Don't get.
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post #11 of 19 Old 12-30-2009, 11:18 AM Thread Starter
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Originally Posted by WI03Wrang View Post
I have the same terraflex set up you do. Go with the Tru-speed. Works great, easy install and calibration. You will net your cost on the first speeding ticket you Don't get.
Well it seems that the one teraflex uses IS the Tru-speed from SuperLift ,so i hope the 167$ quadratec quoted me are ok!!

This an email i got from TERAFLEX's customer service:

Hello. The Tru Speed unit hard wires into your existing wire loom. Utilizing the speed sensor wire, 5 volt power, and a ground wire. It comes with enough wire to mount the module in the engine compartment or under dash. The module has 2 adjusting dials that allow you to calibrate the tire diameter to axle gear ratio. You can calibrate 2 different tire sizes, and switch the unit for either size. Its made by Super lift, it runs $206.99. I only have 2 left on my shelf. Thanks


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post #12 of 19 Old 12-30-2009, 01:38 PM
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Quote:
Originally Posted by jeep2008 View Post
No,before i was using a speedo gear now i have a devise that calculate pulses or something like that to sent them to the speedometer/odometer.
Yes. The speedo is electronic. Was before, still is.
(Note: that means it has wires coming to it from a signal generator, as opposed to an old school speedo cable.)
Before, your speedo gear drove a pulse generator (that was the thing attached to the trans with the wires coming out of it running up to the dash.) Now, the pulse generator is built into the SYE unit. The only difference is you no longer have a speedo gear to swap out.


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post #13 of 19 Old 12-30-2009, 03:52 PM
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I'd get the Dakota Digital SGI-5 for $60 and pocket the difference.

It's a universal box, so it takes a little more time to set up, but the others are $100+ more. That's worth a few minutes of set-up IMHO.
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post #14 of 19 Old 12-30-2009, 04:35 PM
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Quote:
Originally Posted by jeep2008 View Post
No,before i was using a speedo gear now i have a devise that calculate pulses or something like that to sent them to the speedometer/odometer.
and the speedo gear does nothing but allow mechanical rotation to be converted to an electronic signal. now you've got a tone ring, so it does the same thing, just a different method. the speedometer itself is electronic regardless of how it measures speed of the output shaft.

you can use an electronic calibration tool with the speedo gear, but its just not cost effective when new a gear is cheap and easy. with a tone ring you must use an electronic calibration tool.


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post #15 of 19 Old 12-30-2009, 05:15 PM Thread Starter
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Right now also i believe that my 42RLE is upshifting earlier than before the change from 3.73 to 4.56.Is this due to the gears or the wrong speedometer?


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