Would those of you who have the Borla or MS cat back be kind enough to give me your thoughts on them? I'm trying to decide the best way to go on my new 05 GT 6-speed. Thanks.

There are tons of threads about this. The search button is your friend.

I am having a slight alignment issue with my MS cat back. Another member from the flrx8club also had problems getting the tips straight. It seems strange to me that a "genuine" mazda part would do this. I am aware of other issues with mazdaspeed items but fitment was supposedly one of the only things they test for.

oh well only I can notice it, and after it gets warmed up ... it sounds like a BEAST

I love the MS Exhaust when it is fully warmed up. I LOVE IT I LOVE IT I LOVE IT.


oh well only I can notice it, and after it gets warmed up ... it sounds like a BEAST

..and I love my Borla!!!

Borla here. Love the sound, especially with my AEM CAI under overpasses. A lot people on here say that the setup I have probably sounds ricey, but I get a lot of complements on it's sound from people who here it in person.

All I have is the MS dual exhuast and for w/e reason 3 people have told me it sounds like it is turbo, and proceeded to ask me what my setup was. Could be the 9K redline and stock intake noise or something. It makes me laugh every time.

oh well maybe some day