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Discussion Starter · #1 ·
Has anyone use this calculator?
http://www.zero.addr.com/design-studio/rpm2speed.html
Pretty nice, but it is giving me higher speeds than what I get when i drive my 83zx nonturbo. I was wondering was my speedometer off. Or maybe it is the tachometer. I know my tachometer in my 87 stanza was 1 of 2 thousand rpms off. The rpm is calculated by the ecu in the car right? Well could some try it so i would know which is off, my car or the webpage
Thanks
 

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<b>RE: Has anyone tried the rpm to speed calculato

I have not tested my Calculator for Z car (don't have real one yet). But I tried it on my daily driver 3000GT VR-4 :) and it was very acurate.

Let me know if it does not work for you.
 

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Thanks for tip--it's a neat site. I tried it and found it accurate. Even drove around til I found one of those radar signs that tells you what your speed is--made a lot of u-turns trying different gear/speed combos. This site would be a help to those with broken speedo cables.
 

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Worked for me...

worked great. nice graph. good tip.
 
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