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Old 05-11-2011, 02:18 PM   #1
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Red face cat or no cat

so as of now i am runing cat back and it sounds really nice and pretty loud but i always had thought of taking the cats off. would it still sound good but louder or loud and ****ty lol and if it sounds good besides the envirment is it bad to run catless?
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Old 05-11-2011, 02:48 PM   #2
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Re: cat or no cat

I think it depends on the quality of the work. I took my 96 gt to a friend who has a shop and he hooked me up with a full catless system with flowmaster 40's in the rear. It sounds great. its loud but not annoying loud. He is also the one who did a complete custom job on my father's 68 GTO that sounds amazing. If you go with a box job that you do in the yard it might not be the same results. All i am saying is if you take it to somebody that knows what they are doing and have been doing it for many years you will be happy with out the cats.
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Old 05-11-2011, 02:52 PM   #3
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Re: cat or no cat

it will sound awesome ... i have kn intake bbk LTH borla xpipe with flowmaster 40s and i have taken them off .. it sounds good when you press the gas.. and it is not annoying .. when you drive slow it becomes quiet but rumbles very smoothly
i am happy after no cat .. but thats just me
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Old 05-11-2011, 03:05 PM   #4
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Re: cat or no cat

sometimes loud is to loud... and it gets annoying very quick daily driving so you have to consider that.
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Old 05-11-2011, 07:00 PM   #5
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Re: cat or no cat

Nah, you don't buy a V8 for it to be quiet haha, i have this set up on my car, sounds great, no drone surprisingly and turns heads:
BBK Tunes Shorty Headers
Pypes High Flow Cats
Stock H-Pipe
Original 40 Flowmasters
American Muscle CAI

The Car is my DD too, all 4 seasons.

Here is my clip.
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Old 05-11-2011, 07:45 PM   #6
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Re: cat or no cat

Yah removing the cats and keeping some type of muffler will sound good. There's still some sound quality. If you were to run straight pipe with no mufflers or cats it would be loud, droney and annoying.

As Spec said it will be way louder than with the cats, especially on the highway, so if you do a lot of driving and actually want to converse with someone while driving, you might want to keep them or get high flows.
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Old 05-11-2011, 07:47 PM   #7
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Re: cat or no cat

well thanks guys i just remembered when i had the great idea of straight piping a v6 just didnt wanna do the samething twice lol
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Old 05-11-2011, 07:56 PM   #8
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Re: cat or no cat

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Originally Posted by 96mustangv8 View Post
well thanks guys i just remembered when i had the great idea of straight piping a v6 just didnt wanna do the samething twice lol
No you really can't go wrong with the v8's. Even though straight piping the v8 might not be the best option, it'd still sound better than the six.

I'd just buy an off road midpipe that bolts right up to your stock headers and to your catback and you'll be set. You'll still have the sound of your catback, only it'll be way louder
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Old 05-11-2011, 09:57 PM   #9
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I have no cats on my gt with magnapacks sounds awesome and loud. Xpipe
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Old 05-11-2011, 11:47 PM   #10
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I have stock headers no cats original h pipe and magnapacks and 4 inch rolled tips.Id reccomend leaving cats on or high flows. When I took mine off I lost a lot of low end power. My gas mileage dropped a lot as well and its not cause I rev more. It sounds good when I take it slow but under heavy acceleration I can't stand how it sounds all choppy. And 2500 drone will kill ya.
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Old 05-12-2011, 07:06 AM   #11
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Re: cat or no cat

And high flow cats really dont take too much away in terms of power, after speaking wiht Pypes their Cats on a dyno only showed 1-2 hp difference, plus you keep the low end torque, and makes the tone a bit deeper.
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Old 05-12-2011, 08:49 AM   #12
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Re: cat or no cat

deeper until about 2500 rpms then just LOUD
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Old 05-12-2011, 09:38 AM   #13
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Quote:
Originally Posted by 96mustangv8
so as of now i am runing cat back and it sounds really nice and pretty loud but i always had thought of taking the cats off. would it still sound good but louder or loud and ****ty lol and if it sounds good besides the envirment is it bad to run catless?
I think you should run with no cats, to me it always sounds better. The sound comes out better and it doesn't sound like you have that muffled sound. Plus I think you have hp gains cuz the cats hold back alot of the power. Just getting it inspected is a pain lol
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Old 05-12-2011, 11:51 AM   #14
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Re: cat or no cat

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I think you should run with no cats, to me it always sounds better. The sound comes out better and it doesn't sound like you have that muffled sound. Plus I think you have hp gains cuz the cats hold back alot of the power. Just getting it inspected is a pain lol
Stock cats yes they hold back HP and sound, however a good set of High Flows one on each side (instead of 2-3 each side) will only cost you 1-2, while maintaining your low end torque and giving the car a deeper tone, your not really giving up too much.
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Old 05-12-2011, 12:06 PM   #15
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Quote:
Originally Posted by StangSims39

Stock cats yes they hold back HP and sound, however a good set of High Flows one on each side (instead of 2-3 each side) will only cost you 1-2, while maintaining your low end torque and giving the car a deeper tone, your not really giving up too much.
Yea I would put high flow cats if u want they that, those are real good, but personally I prefer no cats
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Old 05-12-2011, 03:00 PM   #16
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I would personally choose a dog, much more playful
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