Bro guilt,
Send in my M3 to SC yesterday, update the ECU, change the suspension brush due to noise + fix another noise from suspension as well, fix cable in front dashboard due to noise, fix side passenger seat belt noise.
Took 1 whole day to fix, end of the day  half of my fuel tank is gone 

Then on the way back to home from SC, dunno is the placebo effect or not, feel engine more power sound more zoom zoom, no more annoying noise. feel like driving a 3 series 

Faith in Mazda M3 is restored!