The Gain setting can help spool up the turbo faster by withholding pressure from the wastegate until boost is closer to
the target boost.
NOTE: the Gain setting requires a peak “target” boost to be set up in the Duty Cycle menu (page 8). If you adjust
Duty Cycle without performing a boost run, the target boost will be 0 and the Gain function will not be
operational.
Gain is adjustable from 0-100, where 0 gives a factory-like spool up, which is basically the “natural” rise rate of the turbo
system. A setting of 100 will attempt to make boost rise as fast as the turbo system is capable of by delaying the
opening of the wastegate until the target boost is met.
Of course it may then be tempting to assume that the obvious setting would simply be 100 for fastest possible spool-up,
but in practice this will likely result in an overshoot (boost spike), because the wastegate needs time to move and curb
the turbo’s enthusiasm!
Every turbo system is different, and some will handle more gain without noticeable spiking, whilst others may require a
lower setting. The Gain setting is optimum when boost pressure rises as fast as possible WITHOUT spiking.
1. Make sure duty cycle has first been set and a peak “target” boost recorded, as per page 8.
2. Select the boost preset that you want to adjust (see page 7), then navigate to the “Gain” menu (tap “SETTINGS”
twice from Running Mode) – the screen will scroll “gAIn”, followed by the current gain setting (default is 0).
3. With gain set to 0, drive the car in such a way that the boost pressure rises as fast as possible – this is usually
done by accelerating gently to the RPM at which your engine makes peak power, then flooring the throttle.
4. Now increase the gain setting by 20 using the “UP” button, then drive the car again (using the same method as
above to ensure consistency).
5. Note how the boost spool-up rate changes, and continue to adjust the gain setting to achieve the desired boost
response. If you notice that boost starts to spike, reduce the Gain setting until boost pressure hits the target
consistently without overshooting.
6. When done, tap “SETTINGS” to move on to Sensitivity, or hold “SETTINGS” to exit. In either case, the Gain
setting will be saved to the boost preset that you are currently in.
7. Repeat this procedure for any other boost presets you may wish to set up.
NOTE: the Gain function is automatically turned off when making boost pressure adjustments (in Duty Cycle menu) so
that it does not interfere and cause incorrect peak boost readings from spikes, however the Gain setting will be
reactivated when you return to Running Mode.
You may find it necessary to re-adjust the Gain setting after changing the boost pressure.
9 - setting the boost pressure
Gain
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