ung sakin nka cone type filter, 4-2-1 headers, freeflow muffler. di naman masyadong maingay pag nka idle. barely noticeable ang difference from stock. throaty lang ung sound sa start up. pag reving na, say 3000rpm up, yan talagang vroom vroom ung sound. ung fuel economy naman, di ko din pansin ung difference from stock. nka 15km/l pa nga ako from manila to daet e. talagang driving style ang mag dictate ng fuel economy more than anything else.