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tach error?

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Old May 4, 2020 | 11:45 AM
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Default tach error?
Can you tell me what rpm I should be turning at 55mph? (1993 base model) Its only showing about 1400 and that seems low to me.
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Old May 4, 2020 | 12:10 PM
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Depends on gear ratio but that is about right. (in 6th)
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Old May 4, 2020 | 12:24 PM
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forgot, automatic.
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Old May 4, 2020 | 12:32 PM
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Seems appropriate for a 2.59 ratio in an A4 car. Console lid SPID should display GM1. Does it?
Last edited by WVZR-1; May 4, 2020 at 12:36 PM.
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Old May 4, 2020 | 02:46 PM
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Sounds right to me.

1400 rpm
2.59 rear gear
0.70 overdrive
26" tall tire
=
59 mph
Last edited by Krusty84; May 4, 2020 at 02:46 PM.
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Old May 4, 2020 | 09:00 PM
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Thank you. Didn’t know how to do the math and happy it’s correct!
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