they keep the set-up MI3.5 :
front: blue spring, 0.5
rear: white spring, 1.5
Yoann bukowsky: "the test is good now! the rear block have more grip than the MI3. But the MI4 has lost directivity ! I' think we can take the same front train MI3..."
Alexandre Laurent tell me and he say : "I recive the new chassis 2mm MI4. the car has more flex and i doing more directivity!"