Should I Change My Cat-back (again)???

Okay kiddies:

I'm sure this will elicit some groans from those of you who know me, but I'm contemplating on changing my cat-back exhaust again. Why you ask?
Well, two reasons.....

1. I think I've finally got the car running right (bad EGR valve), but I think the smaller 2.25" Borla system is hurting me up top. Don't talk to me about losing low-end since my car doesn't really wake up until 3 grand anyway.
2. I want something that sounds ballsier, but still not obnoxious enough to attract smokies.

My current exhaust setup is TOG headers, a 2.5" Magnaflow cat, and the aforementioned 2.25" Borla cat-back. The proposed new cat-back would be 2.5" all the way through. Some of you may recall that I've experimented with a setup like this before (SLP 2.5" pipes and a Magnaflow muffler), but deemed it to be too loud - it's now producing grins on Oldsman's car.
So why would this be any different? Well, the old SLP/Magnaflow setup was bolted to a blown-out RT cat, which probably amplified things. Also, I wasn't using a resonator before, which I plan to do this time.

So what do you think? Constructive criticism welcome.

[kwhauck]

i think the slp/magnaflow would be your best bet matt, something to think about too, it that i had a slp/magnaflow setup on my car recently, instead of a dual out my magnaflow was a single in/out, although i don't have headers, i found this setup to be significantly quieter than the slp/magnaflow dual out, it is all your preference but i am just throwing that out there......

[alerored04]

i think the slp will be your best bet, then you can sell me the borla too!!

havent worked on the alero exhaust before, but on other cars, and reducing the diameter will give you a break down of the laminar flow.

As long as you're using 2.5" pipes I don't care what muffler you use. If you're concerned about noise make sure you get a good and fairly long 2.5" resonator to use after the cat, they make a large difference. After that a fairly open, 2.5" muffler and you'll be good. The performance difference between a wide-open resonator-type "fart can" muffler and a properly baffled one is unnoticeable, at least on a car that isn't forced-fed