oo~~~ ic~ so b16b or b18cr cam also can use arh? now i using apexi neo afc... but now 5-7k rpm same like b16a no feel... but 1-3k rpm hav more power abit la....
Anyone know how to DIY a spring stiffener? It is used in between the spring to make it more stiff... to improve braking and handling. I know splitfire is selling but too ex.... around S$80/pair.