Haltech IG5 - Manual (Page 61)

57
Minimum Temp
The NOS system will not be activated unless the engine coolant temperature is above
this value.
Ignition Retard
The IG5 will provide an ignition retard whenever the Nos system is engaged. The
number of degrees retard is set by this field.
Note: When using the Nos function, the Aux. In Function in the
Identification must be set for Nos. When using Nos, other functions that use
the Aux. Input/Output line can not be used.
Note: For safety reasons the nos function is enabled only after the ecu is on for
more than 2 minutes.