raj

Wussup

anyone consider replacing the catalytic converter, resonator, the 2 1/4in exhaust piping and the chambered mufflers with just a 2 1/2in exhaust pipe that runs all the way through to the y pipe with two after market mufflers? let me know, its something i'm seriously considering doing.

later.

nate'sCLS

I've heard of removing the resonator to increase exhaust noise, but by removing the catalytic converter won't you increase pollution? Wouldn't fly well in Cali :shakehd:

AztecRol

iTrader: (2)

Not only will it not fly, it will leave the check engine light on because of one of the sensors that you can not hook up withou the cat. Unless you have a turbo, removing the cat won't give you much HP gains.

nate'sCLS

True.

Smitty

Raj I was thinking about doing this.. but with a aftermarket High flow cat and stock 03 mufflers... TYPES4ME removed his Resonator and got a pipe clamped in for 40 bucks at some muffler joint, I am meeting up with him tonight to take a look at it, but I will probably go to my stainless steel guy and see what I can do.. he is dirt cheap, he just doesn't do headers..LOL..

Smitty

JasonT

I really see no need. You will not gain anything, but noise. It's like the real aftermarket exhaust systems. They are for sound, & have very little HP gain. The stock system is great. Also if you do go that route you will lose alot of the back pressure, & you WILL lose low end power.

raj

from what i hear it seems like if the air can flow more freely through my car i'm bound to get an increase in acceleration. by removing the cat and res and having a wider pipe it might be worth a shot.

the guy that would install this for me said he'd take care of the check engine light by installing that part of the cat onto my new straight pipe.

i'll keep you guys updated.

JasonT

Yes this is true, however, it will not help on a normal CL-S engine. You would have to have forced induction ie- a supercharger, NOS, or a turbo to get any real gains.

meloHYPE

RAJ--- i basicly did what you are asking. i have a TL-S with 2 aerospeed mufflers, i had the resenators removed and upsized the piping.... IT WAS TOO LOUD... i like a decent sounding exhaust... but that shock everything inside the car..... anyways i went back to the place and had a straight through resenator put back on... and it sounds good imo, prolly a lil loud to others



if you have other questions let me know



melo-

liquid_x

ey melohype u think we could meet up i wanna hear how your exhaust sounds? pm me

JRock

The funny thing is, you could take all that shit off and run open exhaust, and if you made a WAV file of the sound, people with Comptech exhausts would still swear theirs are louder.


Just playin, guys.

eclipse23

moforose3.0

By replacing your cat you will gain about 1-2 HP depending on the car. I dont really think thats a good idea if you have to worry about emissions. I could see if you were doing if for 10HP, but for 2 I dont think so

danny25

One more thing to consider is if you remove your cats it won't pass inspection, and you can get hit with about a $3000 fine (at least in TX).

robbra

Though I wouldn't recomend it, I replaced the cat on mine with a straight pipe that had a fitting for the 02 sensor. FL has no emissions check so I'm ok there, it wasn't that expensive and I thought it might be worth a try.

While I can't give you any hp figures, I can tell you it does seem much more responsive. When I floor it, it defintiely goes and even is noticable around corners, much more responsive. And, yes its a bit louder, but not any louder than some of these Mustangs I hear around here. But, my god the smell, you really can't imagine how much that cat soaks up until you take it off. With the windows downs and pulling into, say an atm, the smell really kind of engulfs you...

Yes, the check engine light is always on, I've heard of o2 sensor foolers or whatever, but I haven't bothered. I wanted to drive it awhile like this, so I could get a feel for it, then take it off and replace with cat and see if I notice a difference the other way..

I definitely like the sound and others have commented, and also the performance, but I can't give you any verifiable stats.