I've been looking at the slp Loudmouth catback system. It says that installation begins from the y pipe back. So does this mean that the Cat needs to be removed, and if so how would the car pass inspection.

 

I am quite sure it doesn't take the place of the cat too. Even if it did you could still cut the exhaust down to fit. Should be just like any other catback.

 

i believe the loudmouth resonator itself is mounted in the intermediate pipe after the cat and before the muffler

 

Alright good to know, looking for a catback or muffler that will give me the most aggressive sound

 

I was leaning toward the SLP as well. I hit up Youtube and it seemed like the best sound. Since mine is a 95 Z28, it requires the $120 installation kit in addition to the catback.

I listened to Magnaflow clips and found one for $325, shipping included. needless to say, it sounds great on my car.

 

my 96 has the loudmouth exhaust and i love it. the best part is i can passstate boys and they dont even look twice at me which is the best part about it.