Users Manual Manual

Bigstuff3 GEN3 Transmission Control Manual
Shift Time
• Minimum Shift Time – The value inputted into this cell will be used by the ECU to determine
the minimum time between successive up-shifts or down-shifts.
Shift Table
Identifies
P-R-N-D-L
state
The Y-Axis parameter
represents vehicle speed
from zero to 250 MPH
MPH
Display
Identifies the gear the transmission is
currently in (number to the left) and the
next gear (number to the right) the
transmission will up-shift or down-shift
to.
Large or
“Active”
window
identifies the
gear the
transmission is
currently
operating in.
The X-Axis parameter
represents % of throttle
opening or position (TPS)
from zero % to 100%
“Inactive”
window
The shift table is used to configure transmission up-shifts and down-shifts for each gear as a function
of vehicle speed (MPH) and percent (%) throttle opening. The green lines in the windows above
represent transmission up-shift points and the red lines represent the down-shift points. The area
between the red and green lines is the hysterisis needed to keep the transmission from continually up-
shifting or down-shifting.
The “Active” window is the term used to describe the window (gear) the transmission is currently
operating in. The “Active” window will move up or down within the Shift Table depending on which
gear (window) the transmission is operating in. The “Active” window will always be larger than the
other inactive windows and the X axis (Throttle Position) & Y axis (Vehicle Speed in MPH)
parameters will also be displayed as the “Active” window moves from gear to gear.
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