Anyone here use apexi turbo timer? Just wanna ask y'all does the O2 voltage display on the unit cycling during idling? Mine just stay at 0.10, only start to cycle when I press the pedal.
I've heard that port bit of outter part to exhaust in the turbine makes air flow smoother.. is it true? but some say
it's quite risky because it might have some chances that the shell of turbine will get cracked.