Hi dear Sifu's

My current ride is Mazda Lantis 323f ( with the 2.0 KF-ZE V6 engine) which came with a factory installed Mazdaspeed Yumex exhaust/muffler ( eg. http://www.zerotohundred.com/newforums/eng...3-1-8inch.html). ( not sure if its a Mazdaspeed Tabung only or exhaust system is from Mazdaspeed)

Any suggestions on some exhaust mods i can do? only add on so far is KNN Air filter (non open pod). Lookinf for decent fuel consumption with better power delivery. ni