hi,mind 2 ask some question??im having CM4 latest accord 2.4 i-vtec,now my car aready got two s-flow(one is normal then another 1 is ori)muffler,if i change the 2 normal s-flow muffler to 2 mugen twin loop muffler,got any diff??power??coz it looked nice if i make it on my car.......then somemore is tat oni got 2 brand making twin loop muffler,one is F-1 racing n one is mugen??then the F-1 racing got fake or real 1 ga??then if i 1 2 change the whole exhaust(front,center n back)juz for honda i-vtec,where can get n cost?? im juz start mod car so ned more advise,thx for help..........