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Problems still with the Speedo after install of new rear end.

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Old 09-28-09, 12:21 PM
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GTE_SC3
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Default Problems still with the Speedo after install of new rear end.
Hey, I am still having problems with the speedometer being off. I just installed the rear end of the TT Auto with correct gearing. So now i have the TT motor, a Built TT auto with the TT rearend. I thought by having all this, it would correct my speedo problems. Before i put the rear end in my speedo said i was going 90 at an actual 70 mph. Now after the rear end change my speedo so im doing around 75 at 70. I want it to be as accurate as possible i hate always having the speedo off. Is there anything i can do to make it work correct without buying a yellow box unit? Also i do have the TT wheels on the car but that shouldnt make a difference.

Does my speedo need to be recalbirated some how or another?

I do appreciate any help you can give me
chris
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Old 09-28-09, 09:31 PM
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i think there is a little electronic doodad that does it for you... can't remember the name of it right now.
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Old 09-28-09, 11:32 PM
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TheMole
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Checkout this thread:

https://www.clublexus.com/forums/per...-76-gears.html
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Old 09-29-09, 08:33 AM
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Do you have stock sized tires?
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Old 10-02-09, 11:42 AM
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No i have supra tt wheels on so just 17 inch wheels.
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Old 10-02-09, 04:29 PM
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2jzlex
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Originally Posted by GTE_SC3
No i have supra tt wheels on so just 17 inch wheels.
That isn't what he asked.....
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Old 10-02-09, 09:58 PM
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New yellowbox site..I'm getting one too...my speedo is 10mph slow right now due to 3.76 and 285/35/18s

http://www.yellr.com
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Old 10-03-09, 04:04 PM
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um my tires are 255/40/17 maybe thats what you ment. I dont have a clue what stock sized tires come on the sc since mine has always had the tt rims.
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