The Profec is programed with the same 3, easy adjustments as the previous PRofec B-spec2 (SET, GAIN, & START), but refines the programing to one simplified screen, for simple intuitive control. (While the PEAK recall in the programing screen helps the programer see what boost level was.)
SET % = Sets the boost level. As simple as a manual boost controller. As you increase this percentage from 0-100% it increase boost over factory wastegate spring boost level
GAIN % = Set the Wastegate response (stability) at higher RPMs. So if the boost level tends to drop as the RPM rises, you can set the GAIN % to a higher positive value (0 to +100) And if you want the boost to drop at higher RPMs you can set the GAIN % to a more negative valve (0 to -99)
START (Boost) = [CONTROL] Is a boost pressure value that determines Boost Response (or when the boost controller starts to open and close the wastegate.) The is generally set 3-6psi (1-2kPa) below the desired boost level. (if the boost "Spikes" then regains control, it is likely the START valve is too high and should be set lower.) Under the START [NORMAL] setting (if used) the wastegate is allowed to open gradually to the START boost value (more similarly to a manual boost controller. This maybe ideal for more complex sequnetial turbo set-ups.)
Let me know if you have any questions
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