Class1 119971 - Twister Electronic Throttle ANALOG - 120478 EXTERNAL - Manual (Page 10)

FORM-ENG-0018 REV A 05-27-03
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Ocala, FL 34475
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TECHNICAL DATA SHEET
PAGE 9 OF 16
DATE 10/1/2010
PRODUCT GROUP THROTTLE CONTROL P/N 119971 REV 1.20
PRODUCT Twister Electronic Throttle (Analog version) BY AMS
Manual P/N 120478
4.6.1. Idle RPM configuration
Enter the password:
Release the IDLE button.
The Twister sets its output signal voltage to the lowest point. Use the control knob to increase the output signal
voltage until the engine begins to increase its RPM. Use the control knob to find the base limit of control and then
press the IDLE button to save the output signal voltage as the idle voltage.
Engine manufacturers will program their ECMs for a curb idle. The Twister cannot force the engine ECM to attain a
lower RPM than the manufacturers curb idle.
4.6.2. Maximum RPM configuration
Enter the password:
Release the IDLE button.
The Twister sets its output signal voltage the configured idle voltage. Use the control knob to increase the output
signal voltage until the desired maximum RPM is attained. Press the IDLE button to save the output signal voltage
as the maximum voltage.
Engine manufacturers will program their ECMs for a maximum safe RPM limit. The Twister cannot force the engine
ECM to attain more RPM than the manufacturers limit.
4.7. Output Ramp Rate
The Twister (software version 1.2 and above) can be set for two different output ramp rates. The normal mode, which
is the default, increases/decreases the output signal voltage for every click of the control knob. The slow mode
increases/decreases the output signal voltage for every two clicks of the control knob, effectively creating a slower
response to the user input. In slow mode, the ramp time when returning to IDLE using the IDLE button is also twice as
long. The slow mode can be useful in matching the Twister to certain engines if the default ramp speeds are too fast.
Normal Mode (default):
Slow Mode: