exhaust question

[Jonas240]

ok i see 2 different kinds of apexi n1 exhausts, one of them is sort of smaller and a little bit thinner (the muffler) and the other one is somewhat bigger whats the difference between these two?? i prefer the bigger one is that the turbo application??

[BEISSEN]

Ok i anly know of two n1 style exhust from apexi there is the n1 singal and there is the n1 duel.the duel has two tips and the singal has well one.n1 singel is more geared toward the turbo ino and the duel is for more n/a.