need help on where i can get the quietest muffler. evolution of my car's muffler: stock --> GMedallion --> some local stainless steel muffler (still maingay kasi free flow pa din) --> muffler from cpm muffler haus that is not free flow. pero maingay pa din (nag-a-alarm ang mga katabing kotse kapag nag-rebolusyon). (btw, stock lang ang makina ko without any mods whatsoever.) preferably sana in makati/mandaluyong/manila area.

thanks in advance