Speed on speedometer differs from power fc?
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Joined: Feb 2003
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From: Atlanta, GA
Speed on speedometer differs from power fc?
I was on my way home from rotorsports racing today and ran out 4th gear on a country road. My speedometer said 128mph or so an 7000rpm, but my PFC read 190 kph or 118mph. I still have the stock wheels on it and very close to the same stock tire size and no upgraded gears or anything. What could be causing such a big difference in the two?
The Power of 1.3
Joined: Aug 2001
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From: Shrewsbury, Massachusetts
Speedometers are known to be generous, it keeps people from speeding too much 
. This is exaggerated as speed increases. If it's off by 10mph at 118mph, thats roughly 9.1%. At more normal speeds, say 40mph, it'd be off only 3.6mph.
. This is exaggerated as speed increases. If it's off by 10mph at 118mph, thats roughly 9.1%. At more normal speeds, say 40mph, it'd be off only 3.6mph.
$ pit on wheels...
Joined: Mar 2001
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From: Bay Area, Ca
Re: Speed on speedometer differs from power fc?
Originally posted by 0110-M-P
I was on my way home from rotorsports racing today and ran out 4th gear on a country road. My speedometer said 128mph or so an 7000rpm, but my PFC read 190 kph or 118mph.
I was on my way home from rotorsports racing today and ran out 4th gear on a country road. My speedometer said 128mph or so an 7000rpm, but my PFC read 190 kph or 118mph.
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