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New here, Looking For Cat Back Exhaust Info

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Old 07-31-2009, 09:07 AM
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Default New here, Looking For Cat Back Exhaust Info

I have a 2000 Z28 finally broke down and bought something LS powered. Early in the summer I bought a 94 Z28 LT1 Auto and it was just not nice enough to get into. So I sold it an bought the 2K Z28 LS1 6 Speed, clean Texas car with quite a bit of modifications. I bought the car as a project and want to finish it up this week. The last thing to order before installs and tuning begin is the cat back exhaust.

Currently the car has a comp camp, different pushrods and rockers, intake, TB, long tubes, catless y pipe, and the last piece will be the exhaust. Is the car going to be nausiating loud on the expressway with the Loudmouth 2? Or should I just do the magnaflow?
Old 07-31-2009, 09:14 AM
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Drone is an issue with most exhaust. As far sound, you do hear a Magnaflow, LM and LM2 has their own sound. If you can get a ride in a car with one, I would do so. Also make sure it has a cam as it matters when its stock, or you move up.

I have a Corsa with a Dynatech Catted Y, w/o CATs on my old setup it was darn loud and people didnt like it as much. But the interior sound under 3k was very good.

You can also consider Borla and have it capped down.
Old 07-31-2009, 10:04 AM
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Get a hooker cat back, Its one of the best flowing, and won't brake the bank. I love the way mine sounds, no rasp, quiet enough to talk to a passenger during crusing and screams at wide open throttle.
Old 07-31-2009, 10:19 AM
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I love the sound of my LM1, but w/o cats it will be too loud. If you're going to keep your cats off I would go with something like Magnaflow.
Old 07-31-2009, 10:34 AM
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since you have longtubes, i would opt to go with the magnaflow over loudmouth. the magnaflow will sound alot better and more bearable to drive, unless you just want one nasty loud car then go loudmouth.
Old 07-31-2009, 09:42 PM
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I have hooker and I love the sound it has. Not to loud cruising but sounds good when you get on it.
Old 08-01-2009, 10:29 AM
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LM= with your mods. I personally love the sound of my Hooker but Magnaflow would be my next choice.
Old 08-01-2009, 10:51 AM
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hooker, or JEGS catback.
Old 08-01-2009, 02:37 PM
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Borla sounds incredible.. Listen to some on youtube. Nice deep growl !
Old 08-01-2009, 02:48 PM
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Borla
Old 08-01-2009, 03:47 PM
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Bassani Xpipe Dual exhaust.

After cam http://www.youtube.com/watch?v=t4VDzfg65Po

before cam http://www.youtube.com/watch?v=jLDHXyjyfh0

Expensive but definitely sounds wicked good http://www.lmperformance.com/5795/1.html you can probably find it cheaper some where else.
Old 08-01-2009, 05:34 PM
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You should go to LS1sounds.com, and decide which one you like for yourself. A lot of different peolple will tell you a lot of different things. The two running themes are that Flowmasters suck on LS1 cars, and a loud mouth is going to be, well, LOUD.
Old 08-02-2009, 01:46 PM
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x2 on the LS1sounds.

If your going for flow/power and sound, you cant beat duals/x-pipe and there are several mufflers that sound good, just your taste and wallet.

Alot of people run the loudmouth with extra bullet mufflers or something else that tones it down a little but again, your preference.

Flowmasters sound good but get a bad review from flow tests. I suppose the best would be get duals with cats and mufflers that stay quiet and run electric cutouts.
Old 08-02-2009, 02:01 PM
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Originally Posted by qwk93ta
I love the sound of my LM1, but w/o cats it will be too loud. If you're going to keep your cats off I would go with something like Magnaflow.
I agree. It's not so much a matter of having LT's, but what type of Y-pipe you go with. I love my Loudmouth exhaust as well.

One option is, if you already have the LM2, you could install it and if it turns out to be too loud for your taste you can add the Powerflo Resonators from SLP. A couple of gentlemen on here (Detoxx and The Alchemist) say they love it. I know Detoxx has a couple of videos of his car with this catback. Do a search and give it a listen. You may find something you like.
Old 08-03-2009, 09:50 AM
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another 4 Borla
Old 08-03-2009, 01:14 PM
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SLP's PowerFlo
Old 08-04-2009, 08:02 AM
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Loud Mouth is fine for stock internals, put a cam in ANY set up, the sound changes. Change the compression ratio, the sound changes again. Having cats with different guts will give different sounds.
Old 08-04-2009, 09:33 AM
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I was thinking loudmouth 2 how much is the hooker set up and who sells it? I want it asap so I can drive my car, I was about to order it today but the hooker might be better
Old 08-10-2009, 03:20 AM
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Tryout Magnaflow....slightly more tame in volume but good on performance
Old 08-10-2009, 08:38 AM
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I have a magnaflow but no cam.... car is kinda quiet at idle, decently loud at WOT. I have heard the Loudmouth in person both with and without a cam and no cats.... its a no-no in both cases. Unless you like that nasty raspy loud sound... id go with a magnaflow.



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