vehicle to cross the finish line without making that last shift.
The highest shift point RPM you can use must always be
less than the rev limiter RPM. If you do hit the rev limiter, the
computer will shut the fuel off until RPMs drop sufficiently, so let
off the throttle and abort that test run. The rev limiter is there to
protect your valve-train and the engine from damage. Even if you
went quicker every time you raised the shift point RPM, stop at
100 RPM below the rev limiter. That’s the most RPM you can use
safely for that shift point.
This is the first screen you will see:
If you press ‘Y’, you will see the following screen:
The automatic transmission shift point adjustment range is:
1-2 shift: +/-6 MPH (In 1 MPH increments)
2-3 shift: +/-12 MPH (In 1 MPH increments)
3-4 shift: +/-18 MPH (In 1 MPH increments)
Press the s arrow once for 1 MPH, twice for 2 MPH, etc.
and then press the ‘Y’ button to enter your 1-2 shift point choice.
If you don’t want to change the 1-2 shift point, enter a zero (0),
and press ‘Y’.
After downloading the 1-2 shift point you want to test,
disconnect the programmer and make your test runs (At least
three (3), but as many as needed to get three (3) good runs for
averaging.). If you’ve seen a gain, continue moving in that direc-
tion until you begin to slow down or until you are within 100
RPM of the rev limiter. You can now review all of your test
results, select the best 1-2 shift point for your vehicle, and pro-
gram it in. If two (2) different shift points run the same average
e.t.’s, use the lower MPH and RPM to save wear and tear on the vehicle.
13
NOTE: These tables are for general reference ONLY.
Vehicles will vary slightly depending on tire
height and accuracy of the tachometer.
PRESS Y TO ADJUST TRANSMISSION SHIFT POINTS
PRESS N TO KEEP STOCK SHIFT POINTS
USE UP/DOWN ARROWS TO ADJUST SHIFT POINTS, THEN PRESS Y TO SELECT OR N TO EXIT.
1-2 SHIFT +0 MPH
Camaro/Firebird/Corvette
1-2 upshift: 5700 RPM
2-3 upshift: 5700 RPM
3-4 upshift: 5500 RPM
Stock Shift Points At Wide Open Throttle
Impala SS/Caprice/Roadmaster
1-2 upshift: 5400 RPM
2-3 upshift: 5400 RPM
3-4 upshift: 5400 RPM
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