The best my car sounded was with factory DP/CAT , remove 2nd cat and res and remove both mufflers, installed a AERO Turbine were the 2nd cat and res was. It sounded louder, deeper, bad a$$ .
Then I pulled the factory DP/Cat for a catless DP, OMG it was so loud, so poppy, not drivable, can't beleieve how much of a muffler the cat was.
Then I began chasing that good sound. Added the factory res back , it helped but not happy, replaced all with a highly recomended resonator only, way too loud.
Then put in 11113 magnaflow mufflers( 3.5x7x14" ovals) in, then way to quiet, took vibrant res out, and still too quiet.
Current set up is catless DP, a ton of splices and 2 magnaflow 1113's , too quiet.
SO scrapping it ALL. Getting 2.5" DP back custom to maganflow 2.5" Y and going to run 2 magnaflow 4" round 2.5" in/out .
This should get me louder for sure as right now it's stock quiet.
Right now the only DP back offered is the milltek but I'm not spending $1200 , the magnaflow system is a 2nd cat back system, not wanting that since I would still have the factory pipe in front which is about 2".
This car has been the hardest car I ever owned to get it to sound good. I had the great sound but once I went to stage 2 manic and catless all that went out the window.
So if your not going to go catless I highly recommend the aero tubine method.
And now after a week I'm going to put a vibrant 1792 ( small resonator ) inline to reduce or stop the buzzing inside, not so much a drone but a high freq vibration at certain rpm, and it is a wee bit too loud so hopefully this will make it just right. All though it sounds bad arse , especially under bridges.:cornut:
Just placed an order for the Aero Turbine AT2525 muffler from Moe's.
Update: Installed Aero Turbine [2525] muffler. Also re-positioned the straight pipe coming off the resonator that was contacting [stock] chassis brace, causing noise. And I thought my RSB bushings were shot. Maybe they are but the new muffler is "muffling" whatever squeak I was hearing.
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