i've got a borla 2.5 from the cat back, sounds kinda ricery, but definetly unique, that teamed with my cone intake, and i noticed an improvement in power
the sound: it's kinda grown on me, really deep smooth loud tone on hard acceleration, then it start's to get a little throatier around 3500 rpm,at idle it's got a lil burble to it, but there is significant drone in the interstat, but i was goin for performance over sound
fully welded lifetime warranty, straight through design
picey but i gota good deal