Fueltec FT 500 - Variable Camshaft Control;Powerglide Gearbox; Progressive Nitrous Control

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14.5 Variable camshaft control/Powerglide gearbox
The camshaft control systems that use solenoid valve type NO/NC VTEC can be controlled
switched by PWM (such as Toy Ti), it is possible to manage it through the Boost Control function, as long as its
characteristics (power, current, etc.) are within the auxiliary output limits.
This resource can also be used to switch the control solenoid from the 2-speed automatic gear control,
Powerglide type. Configure the RPM to turn on the solenoid responsible for engaging the second gear, only for drag
racing applications.
14.6 Progressive nitrous control
This function drives the solenoids used for the injection of nitrous oxide in the engine. As these solenoids have
. The use of a
Peak and Hold Module 8A/2A is necessary to drive the solenoid(s).
The cable pointed by the arrow i
to control more nitrous solenoids.
The Peak and Hold channels not used for nitrous control can be used to drive fuel injectors, if needed.
There are two ways of using the nitrous control: with or without fuel injection through the fogger. The first option
is also the most used one, in which the fogger injects both nitrous oxide and fuel (wet nitrous). In the second option, the
fogger only injects nitrous (dry nitrous). Fuel enrichment is managed by the injection, increasing injection times based on
what has been programmed. The dry nitrous system has reached better results in tests, giving the engine a more linear
power than the first option. It is important to clarify that in order to use the dry nitrous system, the fuel injectors must be
correctly sized for the power maximum with the nitrous system operating.
It is recommended that one of the injection maps is left only for nitrous when using a dry nitrous system, because
injection timing adjustments must be set on
the compensation map based on RPM.
There is a difference in the operation of solenoids that control nitrous injection and the ones that control fuel
injection: nitrous solenoid starts pulsing after 5%; fuel solenoid only pulses after 20%. Variations may occur among
solenoids from different brands/manufacturers.
When applying the conventional nitrous control, one must start with a minimum injection time of 20%, but when using
dry nitrous, it is possible to start with 5%, as the injectors and not the solenoid will control fuel injection.