Originally Posted by alexb76

Thanks Dave. I am seriously thinking of just doing X51 headers and PSE, to see how it does. I might do a dyno before/after to see...

Intake cost is quite high and as far as I know it's not plug and play and you need to do some modifications to fit it (can't remember what exactly it was). Wish it was, as I would have done it for sure.

Originally Posted by alexb76

It's the best exauhst I've seen, the sound is sweet. I also don't believe it doesn't add ANY HP, whatever it adds would be fairly small nonetheless. I might do 200 CAL, but not sure if I'd then pass emissions, and I like to keep things as OEM as possible as I am CPO and don't wanna give PCNA any excuse!

Originally Posted by utkinpol

It depends on how you have emissions test done in your area - sport 200 cell cats do work normally when they get hot, so if car is not left to completely cool down at test station you should be OK with emissions.

Common knowledge says best aggressive sounding mufflers out there are Borlas. To me they all sound pretty much alike and Fabspeed is no worse than AWE or Borlas. It is all hype, well, mostly.

Do not overrate role of exhaust mods BTW - I just got my water pump replaced on warranty, I have fabspeed x-pipe cats plus whole caboozle of other stuff and no one really cares about this at dealership.

There was only one documented case on forums where cats did lead to engine destruction - but it happened because it was a prototype version on a supercharged car where catalyst element got melted and sucked in back into engine. No one of major cats brands will do such a trick so it is all quite safe and dealers know that.
Just go with major brands - AWE, Fabspeed, FVD, what else big is out there.

Plus what I was saying before - warranty issues may be originated mostly by aftermarket headers, as most important exhaust parameter for any engine is a diameter on receiving pipe in headers as it controls pressure at engine exit and then less but still important thing is cats as it also affects pressure before catalyst.
Mufflers (which PSE is) is pretty much an irrelevant element and essentially it is just a dead weight we carry to preserve our ears , so, if you want to invest - I would look at lightest one.
Sound wise all aftermarket ones are quite loud, so, put 200 cell cats and headers first and then run car with stock mufflers, then take `em off and run car again. With sport mufflers that roar will be reduced appx 2-3 times and will be 5-6 times louder than with stock mufflers. Then decide what is it you really want.