Innovate Motorsports SCG-1 - Manual (Page 12)

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Tuning Tip: Start small and work up. Do not increase Wastegate
Duty if Boost/AFR cuts occur. Remedy Boost/AFR cuts before
increasing Wastegate Duty.
Note: Because of flow restrictions, wastegate spring size, and
other factors, not all applications will be able to achieve desired
target boost pressure.
2. Gain
– Ramps up the solenoid Duty Cycle to help with boost
pressure drop at high engine speeds. Gain is calculated as a
percentage of what the current wastegate duty is set at (Max Duty
with Gain = (Gain% * Duty%) + Duty%). For example, if your
Wastegate Duty is set at 30% and your Gain is 50% the SCG-1 will
gain up to an additional 15% (Max Duty with Gain =45%). Gain is
triggered 1.5 seconds into active boost and will ramp up until Max
Duty is gained. The SCG-1 will display the active duty cycle and
progressive Gain on the upper right hand corner viewport when
active. Default setting is 0%.
Tuning Tip: Tune your wastegate duty and spring pressure settings
before gain.
3. Spring Pressure (Spring Press) – Sets the activation pressure for
the solenoid. Set this value at or less than your mechanical spring
pressure. Be aware that setting this value too low may cause boost
spikes, setting it too high may cause an extreme delay in the
activation of the solenoid. Default setting is 4.9 PSI
Tuning Tip: A good starting point is 1 to 2 PSI below the
wastegate's mechanical spring pressure.
4. Boost Cut by Pressure - This is a safety trigger to cut boost by a
desired wastegate duty percentage at a specific manifold absolute
pressure. There are two setup parameters to trigger this safely cut:
Max Pressure (Boost Cut Press) and Cut Percent (Boost Cut %).
Max Pressure (Boost Cut Press) is the maximum manifold absolute
pressure that is safe for the application. Cut Percent (Boost Cut %)
is the percentage of wastegate duty that the trigger will cut when the
max defined pressure is hit. When the safety Boost Cut by Pressure
is triggered, the SCG-1 will display “B Cut” on the upper right hand
corner viewport. Default setting is 8 PSI with a 100% cut.
Tuning Tip: Start with a 100% Cut Percentage.
5. Boost Cut by AFR – This is a safety trigger to cut boost by a
defined AFR . There are two setup parameters to trigger this safely
cut: Start Pressure (AFR Start Press) and AFR Cut. Start
Pressure (AFR Start Press) is the minimum manifold absolute
pressure where the safety cut will become active. AFR Cut is the