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Speedometer is consistantly +5mph off with jdm transmission

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Old 10-06-05, 12:30 PM
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Speedometer is consistantly +5mph off with jdm transmission

Anyone else experience this? Stock wheels w/ 225/50/16 tires, always shows +5 over actual speed (verified with other cars and GPS)... I *think* I used the speedo gear that came in the JDM gearbox, need to put my USDM one in?
Old 10-06-05, 02:17 PM
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I'd try swapping the speedo gear. Do you know if your original tranny was on the money speed wise? Just wondering how accurate the speedo is.

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Old 10-06-05, 06:23 PM
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Isnt 5th gear different in some years?
Old 10-06-05, 06:29 PM
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My Efini (JDM) does the same thing...about 8km/h out. When I am doing 110km/h, its actually about 102. This also happens to our Series 8.

Bit annoying really, seeing its electronic and should be accurate.
Old 10-06-05, 06:36 PM
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Thats funny.. I've noticed that I seem to go slower then others and I've always guessed I was about 5mph off. Funny... now when I rebuild my tranny I'll have to check out that gear and possibly replace it.
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