De-cat exhaust system

[PETERPOOP]

I have 2.25" header back exhaust. No cats and a 18" resonator. I am also boosted. I am going to be putting on a hi flow cat tomorrow. At first I was running a magnaflow muffler and it was LOUD, but now I switched mufflers and it's as loud as an axleback (even with no cats). I'm still going to put on the hi flow muffler just to quiet it down a little more and get rid of that smell. I can feel a sense of free flowing and non restrictiveness now. However, like I said earlier, I am boosted.

Oh yah, and to your question, no great throttle response (atleast in lower RPMs). I lost some torque by going with this exhaust setup. However, my supercharger picks up the slack.

edit: I also used the o2 anti fouler for the secondary sensor. I have no CEL because of it. However, once I put my high flow cat on, I'm going to take it off.