I only know the basic, from my understanding is adjust the cam thru cam pulley and tune with management (piggyback/standalone), hope exp zth member can explain in detail coz im interested too. hehe
just suggesting to the all sifu and otai in MLOC, it's good to have guideline for newbies like myself in case anyone interested in buying evos (1 to 10). For example like darkchild do in Skyline Forum...