I currently have a 99 gt with borla exhaust. I have the mrt h-pipe with cats but I want it louder. Also if i go with the off road what do i need to do to the o2 sensory or computer. Thanks!
thats a fairly loud setup.... removing cats will make a minimal diffrence and make it a little more raspy... if you just want LOUD go with SLP LMII... but if you want it to sound good to then get the Magnaflow Magnapack exhaust...