hai, i was using half exz for my 93na but since there too many roadblock i decided to pasang a mufler..

got the toda design type (replica), but now i m having problem, my car feels like a 1.3.. its does not rev freely feels very heavy, cant go up hill, knocking at 1800 to 2200 rpm!. wat can be the problem???

421 extrator, 2inch piping follow standard back, tabung tengah and 2 inch inlet 2.5 out let muffler??

wrong size for a 1.8...???

wrong piping can effect the car performance...