[Z06] cats or no cats
Safety Car
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
That will depend on the mods done to your car and your muffler selection and how loud you want the car plus your tolerance for the fuel smell.
Best thing to do is find someone w/o them and see if you can tolerate the smell and go from there.
Some say there is no smell others say its horrible. I think it's all personal tolerance. Personally, my car was horrible and it was also tuned by one of recc. forum sponsors so I ended up putting the cats back on.
Best thing to do is find someone w/o them and see if you can tolerate the smell and go from there.
Some say there is no smell others say its horrible. I think it's all personal tolerance. Personally, my car was horrible and it was also tuned by one of recc. forum sponsors so I ended up putting the cats back on.
Last edited by Z06ufgrad2002; Apr 17, 2006 at 10:07 PM.
Race Director
Joined: Feb 2003
Posts: 18,484
Likes: 1
From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by PA Z06
I plan on doing Lgs very soon too, and after haveing 2 cars w/o cats, im def going cats on the z06
I am in the same boat. I have LGs with cats, stock TIs and wish it was a bit louder. Considering aftermarket mufflers but don't want to give up the weight of the TIs and the only thing close are the BB Bullets - not sure I want that loud. Taking cats off will be a little louder I'd imagine, but not sure I want to deal with smell. LG told me that their cats are only worth 3-5 HP loss so that's not too bad.
Burning Brakes
Joined: Sep 2004
Posts: 812
Likes: 0
If it's for a primarily track driven car, then no cats obviously. I just put high-flow cats on (have LGM long tubes and X pipe with factory exhaust), because the smell was very bothersome to me. This is a personal thing, and some folks are more sensitive to it than others. I've had passengers who didn't smell it, while I was gagging, and others who smelled it before I did. I don't notice any hp loss. The sound is definitely toned down a bit. And I admit, the car sounded wonderful without the cats, but it just wasn't worth the irritation of the odor (for me).
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Le Mans Master
Joined: Dec 2001
Posts: 7,788
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From: Winchester TN
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St. Jude Donor '03-'04-'05-'06-'07-'11
Originally Posted by fastbluels6
im thinking of ordering lgs long tubes do i go cats or no cats?
If you go catless, you will definitely spell the exhaust, particularly at stoplights and in your garage.
It does not smell bad to me - similar to the old days when all cars smelled like that.
I do not find it to be a problem, but some might.
Other than that - its GREAT!
best regards -
mqqn
Pro
Joined: Oct 2003
Posts: 501
Likes: 0
From: Jordan MN
No cats just takes a slight adjustment in your driving... as you apply the brake pedal to stop use your index and middle finger on your left hand to close the windows and the index finger on your right hand to hit the 'recirc' on the vents... no smell! 
Le Mans Master
Joined: Sep 1999
Posts: 5,464
Likes: 2
From: Private
Cats or no cats really comes down to how LOUD you want the car to be. Please keep in mind that the cats do about 90% of the sound cancelation, not the mufflers. Once you remove the cats, the volume goes WAY UP, to the point that you may not be able to tolerate it on the street. This is what should influence your decision.
Safety Car
Joined: Oct 2003
Posts: 3,838
Likes: 85
From: DFW Texas
I have not cats, sounds great and I wouldn't change a thing. I don't smell anything...however I'm sure the people behind me do when I take off.
If you go with cats, save your money and do some other mod. The $$ vs. HP gain isn't worth it to me unless you go w/out cats.
If you go with cats, save your money and do some other mod. The $$ vs. HP gain isn't worth it to me unless you go w/out cats.
Thread Starter
Racer
Joined: Mar 2006
Posts: 333
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From: NJ 448rwhp done by tommy @angermanagement nj
St. Jude Donor '10
everybody thanks for the advice even though everones is different i think im going to buy the lgs with cats and not put them on so that if i decide to ill have them!
Melting Slicks
Joined: Dec 2001
Posts: 2,765
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From: Dana Point Ca
Originally Posted by fastbluels6
im thinking of ordering lgs long tubes do i go cats or no cats?
Instructor
Joined: Feb 2006
Posts: 205
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I want to jump in and say that I just had Random tech bullet cats put into my formerly offroad x-pipe. Two things happened
#1 The nasty smell went away
#2 It remained loud
I have a Corsa Pace system, and yes, it was loud before with the offroad x. Now with the cats, I imagine it got a little quieter, if I were to have measured it, but its not enough to notice. Its still nice and loud. Its those aweful factory cats that make it quiet.
#1 The nasty smell went away
#2 It remained loud
I have a Corsa Pace system, and yes, it was loud before with the offroad x. Now with the cats, I imagine it got a little quieter, if I were to have measured it, but its not enough to notice. Its still nice and loud. Its those aweful factory cats that make it quiet.
Le Mans Master
Joined: Sep 1999
Posts: 5,464
Likes: 2
From: Private
Originally Posted by Pursuit_in_Progress
I want to jump in and say that I just had Random tech bullet cats put into my formerly offroad x-pipe. Two things happened
#1 The nasty smell went away
#2 It remained loud
I have a Corsa Pace system, and yes, it was loud before with the offroad x. Now with the cats, I imagine it got a little quieter, if I were to have measured it, but its not enough to notice. Its still nice and loud. Its those aweful factory cats that make it quiet.
#1 The nasty smell went away
#2 It remained loud
I have a Corsa Pace system, and yes, it was loud before with the offroad x. Now with the cats, I imagine it got a little quieter, if I were to have measured it, but its not enough to notice. Its still nice and loud. Its those aweful factory cats that make it quiet.