[RPW00Mirage]

the borla on my turbo is fantastic. it's also a catback. very high quality.

for me it was a small increase in sound, still quiet enough to pass MA state inspection. i imagine the axleback is closer to stock but with a little more grunt.

 

[RPW00Mirage]

i think evilla, solo and borla are your only choices. unless you want jracing or ark triton tip which sucks.