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Originally Posted by shadoquad Why don't we see if we can find a German Z owner and get him to disable the car's governor and go find an Autobahn? Because

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Old 10-12-2011, 11:03 AM   #1 (permalink)
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Why don't we see if we can find a German Z owner and get him to disable the car's governor and go find an Autobahn?
Because at 150+ most factory speedometers are off by what would amount to probably 20 horsepower or more.
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Old 10-12-2011, 11:04 AM   #2 (permalink)
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Because at 150+ most factory speedometers are off by what would amount to probably 20 horsepower or more.
Ok, how about some telemetry software then? GPS tracking? lol there has to be a relatively cheap and fun way to do this.
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Old 10-12-2011, 11:07 AM   #3 (permalink)
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Ok, how about some telemetry software then? GPS tracking? lol there has to be a relatively cheap and fun way to do this.
Yes. GPS and a digital tach readout for confirmation helps.
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Old 10-12-2011, 11:17 AM   #4 (permalink)
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Yes. GPS and a digital tach readout for confirmation helps.
I want corrected DA as well as wind-speed noted.

For the record, I came up with 168mph. I will stick to that +-3mph assuming a non-NISMO 100% stock, manual trans.
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Old 10-12-2011, 11:20 AM   #5 (permalink)
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I want corrected DA as well as wind-speed noted.

For the record, I came up with 168mph. I will stick to that +-3mph assuming a non-NISMO 100% stock, manual trans.
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Old 10-12-2011, 11:19 AM   #6 (permalink)
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Ok, how about some telemetry software then? GPS tracking? lol there has to be a relatively cheap and fun way to do this.
Yes, just punch in the torque across the rpm-band at each rpm-point as shown on a dyno graph, gearing, frontal area, CD, and you will get a number very close estimate of the top speed. I have used a program to do this on numerous cars and it's always within 1-2 mph of verified top-speed testing.
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