Mitsubishi Evo's FAQ's Pt4
Can I damage the ACD differential by driving at full speed without an operating pressure for whatever reason?
It is unlikely to damage the ACD differential unit - as it would continue to operate as a conventional differential but without slip regulation.
My car oversteers a lot and/or is unpredictable in corners!
Drivers need to be aware an active differential system reacts faster and in a more complex manner than a conventional differential system. “Pumping” the throttle mid corner (rear wheel drive style) will cause the centre differential pressures to rise and fall quickly and thus the slip error across the differential will also change fast altering the torque split between front and rear axles. Smooth use of the throttle is essential to good corner lines – think like you know your throttle cable is frayed and about to break at any moment and drive accordingly.
Fuel system
Under Group N rules can we remove all the pollution control piping, carbon filter etc from the fuel tank?
No it should remain in place
Brake system
Under Group N rules can we change the brake pipe layout?
No a cross linked pipework system must remain as per the production RS model with a front and rear brake pipe connected to each piston at the master cylinder. With the ACD system working, negative effects are unlikely to be felt due to the cross piping layout, this is because the ACD pressure locks the differential under braking, any imbalance between axles is thus redistributed via the transmission, similar to a WRC car system.
Can the rear brake pressure limit valve be removed?
No it must remain in it’s original fitted position and connected