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Switched from M6 to A4, how do I fix the speedo?

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Old 08-09-2005, 05:09 PM
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Default Switched from M6 to A4, how do I fix the speedo?

3.73 gears in back, I swapped my M6 for a A4 and it seems my speedo is off.
Anyone know how to fix this? I run a 275 40 17 tire.
Thanks,
Old 08-10-2005, 09:35 AM
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Anyone? I have HP tuners, I am just trying to figure what how to correct for the different pulse freq.
Old 08-10-2005, 10:49 AM
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I assume you havent changed the VSS Pulses/Rev. A4 is normally around 12.68 something, M6 is 40. You want to change that.

Also the VSS Output Pulses/Mile (if yours is not greyed out) should be 4000.

Then just make sure your tire height and gear ratio is set and it will auto calculate the VSS Pulses/Mile and Trans Revs/Mile

Dixit
Old 08-10-2005, 12:42 PM
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Awesome, thak you!
Old 08-10-2005, 12:47 PM
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m6 is 17 ppr

a4 is 40 ppr
Old 08-10-2005, 01:13 PM
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Not for Vettes. But your right, for Camero Firebirds the VSS Pulses/Rev is 17 on M6 trannys and 40 on A4s.

But then again his SN does show Formula in the name, so I guess I shouldve caught that first.

Dixit




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