You place your trusted water hose at the end of your exhaust pipe then fill her up with water til full. Then start the engine then rev your ol gas til all the water comes out. Repeat procedure til the exhaust pipe is clean of black soot.

Or...

Lagay ka "gripo" (pwedeng pakabit sa nearest muffler shop) sa harapan ng exhaust system then flush the gadamn soot off the pipes then start the engine to flush the water out. :D

Do this prior to Emissions Testing. Disadvantage ay madaling kalawangin exhaust pipes and muffler. :wink: