Has anybody done this?
Thread Starter
Staging Lane
Joined: Feb 2004
Posts: 68
Likes: 0
From: North East PA
Has anybody done this? Hi guys. I'm looking to take some of the rasp away from my exhaust setup right now. The bullet didn't quiet it much. I have p/s lt's, gutted cats, and the LM cat back. I have to keep the look of the cats being there to pass inspection, but they aren't using the sniffer in my part of PA yet. This may be a stupid question, but I was wondering if anybody has done or heard of having one working cat and another "dummy" cat just to take some of the rasp out of the exhaust. I don't want to spend a ton on some random tech hi-flow cats, and I heard catco's are just as good as stock. So, if I were to put one working cat back on, would it sound better or worse? Would it harm the car in any way? Thanks
LT's with basically no cats and a catback as open as the Loudmouth will always get you a raspy tone. Always. Pretty much the only way to get rid of some of it is to run cats, which you don't want to do.
So you want to know if you could run one "dummy" cat (being gutted) and one regular one? If you did, I'd buy a high-flow one. I know you don't want to spend the money, but otherwise you'll just be clogging up half of your exhaust. The side with the gutted cat will be flowing quickly and smoothly while the other side is trying to fight through a restrictive cat. If you choose to add a working cat, make it a high flow one, otherwise you'll just be hurting your power output. There's a reason they make high-flow cats: for the people that have headers and need that free-flowing exhaust. The stock cats (or the ones like them) do not flow near well enough for headers.
The only other suggestion for getting rid of the rasp is to change catbacks. Most people who have LoudMouth with LTs end up changing the Loudmouth later on down the road.
So you want to know if you could run one "dummy" cat (being gutted) and one regular one? If you did, I'd buy a high-flow one. I know you don't want to spend the money, but otherwise you'll just be clogging up half of your exhaust. The side with the gutted cat will be flowing quickly and smoothly while the other side is trying to fight through a restrictive cat. If you choose to add a working cat, make it a high flow one, otherwise you'll just be hurting your power output. There's a reason they make high-flow cats: for the people that have headers and need that free-flowing exhaust. The stock cats (or the ones like them) do not flow near well enough for headers.
The only other suggestion for getting rid of the rasp is to change catbacks. Most people who have LoudMouth with LTs end up changing the Loudmouth later on down the road.
