In terms if performance, what is the best muffler for vtec. Some prefer 5 zigen 304 border muffler which gives a nice and loud vtec sound, some prefer spoon since spoon is very closely associated with vtec...however not to forget the mugen twinloop with is designed specifically for vtec.. but does not give as good sound as 305...but the problem is, which is better (performance wise, not sound wise), the twinloop mugen or the 5zigen 304 border? Any1 who wishes to share opinion, please...any 1 who has tried both mufflers is welcome to point out some opinions...tq