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Toymods » Tech & Conversions » speedo is 10-15% out - why?

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draven
Forums Junkie


I supported Toymods

Location:
Epping, Sydney
Registered:
May 2002
 
speedo is 10-15% out - why? Sun, 02 February 2003 05:18 Go to previous message
I had an unpleasant suprise over the weekend. Heading up the coast for a weekend with some mates, I found they kept lagging behind. I was only doing 115, so I slowed down.... and had to keep slowing down to about 90 for them to catch me.
Now, I figued the guy was distracted by his girlfriend or some such, but when I got up there he demanded to know why I'd done 140 the whole way up. whoops.

we matched speeds on the way back, and my speedo reads 95-98 when the car is actually doing 110. what could be causing this? I know one problem could be total wheel_tyre diameter.

My wheels are the stock mk2 supra ones, with P235/60R14 S96 rubber on them. how do these compare to the stocker supra dimensions?

also, any other ideas on what the problem may be? I dont actually know where the speed sensor is, so maybe the new gearbox could be causing issues?
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SubjectPosterDate
Read Message   speedo is 10-15% out - why?  dravenSun, 02 February 2003 05:18
Read Message   Re: speedo is 10-15% out - why? NorbieSun, 02 February 2003 06:26
Read Message   Re: speedo is 10-15% out - why? wilbo666Wed, 05 February 2003 01:09
Read Message   Re: speedo is 10-15% out - why? rahulgurjarWed, 05 February 2003 01:20
Read Message   Re: speedo is 10-15% out - why? NorbieWed, 05 February 2003 02:50
Read Message   Re: speedo is 10-15% out - why? wilbo666Wed, 05 February 2003 04:57
Read Message   Re: speedo is 10-15% out - why? dravenSat, 08 February 2003 05:10
Read Message   Re: speedo is 10-15% out - why? dravenSun, 02 February 2003 12:51
Read Message   Re: speedo is 10-15% out - why? NarkMon, 03 February 2003 00:25
Read Message   Re: speedo is 10-15% out - why? wilbo666Mon, 03 February 2003 00:51
Read Message   Re: speedo is 10-15% out - why? LiamTue, 04 February 2003 15:48
Read Message   Re: speedo is 10-15% out - why? NorbieTue, 04 February 2003 23:38
Read Message   Re: speedo is 10-15% out - why? justcallmefrankWed, 05 February 2003 00:14
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