6L20vt
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« on: December 09, 2016, 02:00:47 PM »
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Hello, what is the formula to calculate correct rpm/mph for ecuxplot?
I have info about my gearbox but i dont know calculate the correct number for my car in this units here is the info:
1ª 9,1
2ª 15,4
3ª 22,0
4ª 28,9
5ª 36,6
R 9,8
Kph x 1000rpm. I make my logs in 4° gear usually. Can help me?. Regards
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nyet
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« Reply #1 on: December 09, 2016, 02:13:55 PM »
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Get a GPS receiver or just use your phone and a GPS app.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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6L20vt
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« Reply #2 on: December 09, 2016, 02:21:49 PM »
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I have torque app and obd elm can i make anything with it?What should I measure on my GPS? For example I keep the rpm to 2000 in fourth gear and see how many mph I get? And then divide them by 1000?. Regards
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nyet
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« Reply #3 on: December 09, 2016, 04:37:33 PM »
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No. Just divide rpm by mph.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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6L20vt
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« Reply #4 on: December 10, 2016, 04:46:28 PM »
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Hello again, I have done what you told me, but I have a doubt, if I do that dovision let's say 4000, it does not give me the same result as if I do the division with the mph I get 5000 for example. What am I doing wrong? Sorry to ask so much but I would like to have well configured ecuxplot. Thank you
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nyet
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« Reply #5 on: December 10, 2016, 04:52:10 PM »
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rpm/mph should be constant for a given gear.
I have no idea what you're asking.
How is "4000" a "division"?
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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TijnCU
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flying brick
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« Reply #6 on: December 11, 2016, 05:01:21 AM »
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Gears are liniar.
Step 1. Drive at 3000rpm
Step 2. Check gps for actual speed (in mph)
Step 3. Divide 3000 by your actual speed.
Result is your rpm per mph in that specific gear.
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6L20vt
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« Reply #7 on: December 11, 2016, 01:33:47 PM »
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Ok, solved, it was a failure in my measurements, thank you very much for your clarifications. a greeting
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