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LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

Overdrive?

Old Dec 7, 2023 | 02:00 PM
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jimisbell
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Default Overdrive?

I just read this online while I was looking for an old Laycock overdrive transmission.:

2. Electronic overdrive kits: These kits modify the existing transmission control unit (TCU) to unlock a hidden overdrive gear. This option is typically less expensive than installing a gear vendor but may not be available for all Lexus models.

Can anyone shed any light on this? Can it be applied to SC 430 or LS 430?

Last edited by jimisbell; Dec 7, 2023 at 02:01 PM. Reason: add
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Old Dec 7, 2023 | 03:23 PM
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Seems like a bad idea - the gearing is tall enough. There is no "hidden overdrive gear" in the Aisin 6 speed.
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