Just my 1 cents knowledge.
I 've been using the putra muffler for my civic si 1.6L. so far I've been driving around for 4 months and i feel i get good mid and topend power. by the way I'm using 2.25in piping from the center bullet all the way back. I just chnge my back muffler bout 2 weeks back at jian heng. since i was waiting to change my muffler i got the chance to speak with the boss. so i ask him how much to make the custom extrator for my car. He told me RM300 and it takes a full day to do. I got a fren who running a mivec with 2.25in piping but also a putra rear muffler, and he says can't compare with those straight flow exhaustbut he likes the topend power..
cheersssssssssssssssssssss....................... :D :D :D
I 've been using the putra muffler for my civic si 1.6L. so far I've been driving around for 4 months and i feel i get good mid and topend power. by the way I'm using 2.25in piping from the center bullet all the way back. I just chnge my back muffler bout 2 weeks back at jian heng. since i was waiting to change my muffler i got the chance to speak with the boss. so i ask him how much to make the custom extrator for my car. He told me RM300 and it takes a full day to do. I got a fren who running a mivec with 2.25in piping but also a putra rear muffler, and he says can't compare with those straight flow exhaustbut he likes the topend power..
cheersssssssssssssssssssss....................... :D :D :D