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A8 Trans Tune Shift Points

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Old Aug 8, 2022 | 07:54 PM
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Default A8 Trans Tune Shift Points

What should these cars be shifting at?

c7 GS. A8 headers, cai, msd, nick williams tb, e85.

engine/trans tune
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Old Aug 8, 2022 | 09:36 PM
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I imagine a stock transmission makes a solid shift at 6400 rpm when the throttle is wide open. I know when I rode around the Glen for 40 minutes in a GS A8 the driver had the trans in Auto Mode and when his foot was planted to the floor from what I could see of the tach from the passenger seat it was shifting at or very close to 6400 rpm. With a modded engine it would be where the tuner decided to make it shift.

Bill
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Old Aug 8, 2022 | 09:42 PM
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Originally Posted by Bill Dearborn
I imagine a stock transmission makes a solid shift at 6400 rpm when the throttle is wide open. I know when I rode around the Glen for 40 minutes in a GS A8 the driver had the trans in Auto Mode and when his foot was planted to the floor from what I could see of the tach from the passenger seat it was shifting at or very close to 6400 rpm. With a modded engine it would be where the tuner decided to make it shift.

Bill
Yeah.. We’re shifting at around 68/69k.. think we need to go back to 64/65k. Was wondering what everyone else with same mods or who had same mods were shifting at.
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Old Aug 9, 2022 | 12:41 PM
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Originally Posted by Aygee
Yeah.. We’re shifting at around 68/69k.. think we need to go back to 64/65k. Was wondering what everyone else with same mods or who had same mods were shifting at.
I don't think you should be going much above 6500 if you don't have an cam/valvetrain to better support it. With a custom specced cam and supporting parts my car shifts at 7100.
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Old Aug 9, 2022 | 01:40 PM
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Originally Posted by JasonVette
I don't think you should be going much above 6500 if you don't have an cam/valvetrain to better support it. With a custom specced cam and supporting parts my car shifts at 7100.
Yeah going to get it dyno tuned next week. Should help us figure out. But I figured 64/65 would be best.
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