New Allison Software

[David Brady]

With the new software, powering up a 6% grade, initial speed
75 mph, under full load, turbo pyrometer: 900 deg F, turbo
boost: 27 psi, she downshifts to 5th gear at 67 mph.

David Brady
'02 LXi, Smokey
Va

Tom McCarthy wrote:
> Along the same line, I learned at FMCA that the Allison software
> defaults to a high RPM/Speed shift point for better performance in
> acceleration. On mine, the shift point from 5th to 6th is right
> around 60 mph. The tranny constantly shifts back and forth on
> inclines.
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