thanks for the replies! akala ko continuous yung water. di pala hehe. i tried cleaning it before by inserting the hose from the tailpipe. pero parang hindi nalilinis lahat kasi hindi naman umaabot hanggang dulong loob yung hose. pero grabe ang soot na lumabas. nangitim yung sahig ng garahe. hehe

wala ba talagang formal name yung "small pipe after the exhaust manifold"? :D