The ECU will  safeguard your engine from an overboost condition. With the ‘Overboost Protect’ option Enabled, you will be able to set the Absolute Maximum manifold pressure that is allowed to occur before the fuel or ignition is cut as per the ‘Overboost Cut Mode’ option. 


This limiter is removed as soon as the manifold pressure falls below the ‘Abs. Max Boost’ setting minus the ‘Overboost Hyst.’ setting. i.e, if Max Boost is set to 200 kPa, and the Overboost Hyst is set to 20, then once the engine hits 200 kPa (or above) manifold pressure, the limiter will kick in, and will stay active until the manifold pressure falls below (200 minus 20 equals) 180 kPa.


Overboost Dynamic Tolerance references the target boost table even if in open-loop, and if the boost expected is +/- the tolerance setting then boost cut will then also occur. This is a Beta Feature.