Join Date: Jul 2002
Location: Cridersville, Ohio
I've thought about using the dual in and out X-muffler from dynomax....just courious as to how it sounds and performs. I'm personally running true dual 2.5"catless exhaust with and H-pipe and two Dynomax Ultra Flow mufflers in the stock locations...all for about $300 bucks. Couldn't be happier with the sound ...get all kinds of looks.
Of course, like stated earlier by Hollywood Ed, you'll loose alot of bottom end torque with out the cats, especially if you're running with a stock motor--even with bolt ons. And if you go to 2.5" pipes, catless, the drop in torque would be even greater. Now do a serious engine build or SC it, and you'll be able to get away with it better. I would say keep the cats but cut the Y section out and go duals from there with that muffler....it'll sound good and still have enough back pressure for the car to "go" when you want it to. Thats how I did my first exhaust..cut the Y out, ran 2 .25" pipes from there with an H-pipe back to my Flowmasters....until they went bad and then added my Ultra Flos.
The only thing I'll say NOT to do is get the Flowmaster cat back system. Yeah, Flowmasters have a great and unique sound...but the performance isn't as great as what people think. I DID have their system once...and the mufflers lasted about 2 years, then a baffle came loose and blocked the exit of the muffler, killing my HP...down to about 75 HP. And when the guy who developed the "J-Mod" for our trannys says they're junk....there's something to it. He was doing the first tune on my car when the baffle issue happened....he thought he broke my car at first. That was quite an experience.
Good luck with what ever you decide to do.
The early bird may get the worm, but the second mouse gets the cheese!!!