Question about removing cats

[Mike_W]

I have removed the muffler on an otherwise stock GTS. If I also remove the cats, will it be:

1. Just a louder car... it sounds the same just alot louder

or

2. A more "aggressive" sounding car... although it is louder, the pitch is also deeper

Any HP gains?

Thanks

 

[Sam 01 RT10]

I removed my cats about a month ago, after running high flow cats w/ no mufflers.
First impressions...DAMN! Its loud without the cats, you'd be surprised. There's not much to be gained HP wise(2-3), I may go back to them later when I do a full 3" exhaust.
Sound-There's a noticeable rasp/reverbiration sound around 2,100rpm, I've grown to like it, but may be too loud for some. Overall, I like the way the car sounds without them, and there's very little heat from the side sills now.
Just my .00002.

 

[GTS Bruce]

MUCH LOUDER.But it sounds good to me.You will need cat syms. Bruce

 

[Daniel Cragin/DC Performance Inc]

The car will be much louder and you may get some fumes in the car. Removing the cats is illegal and bad for the environment.
High Flow cats are a better choice.