.enuf wif the typical introduction..lol..
i've been using Matspeed cam for few months now in my 4G15 motor. even tho its jz a Stage 1 (hey, my air cond function as per normal), it did not lose bottom end power from stock. The gains were recorded from 5000 rpm on. It doenst hv any slopy idle too. but again, u can't expect more jz by using a Stage 1. next mod, i'll be getting the stage 3 *(if) hehe..
