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Making a stock ls1 exhaust sound better

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Old 04-19-2010, 06:52 PM
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Default Making a stock ls1 exhaust sound better

Does anyone know a cheep way to do this? Not like i want to slap a ricer tip and go around buzzing like your cuzin belo, but I'm tired of hearing nothing but high pitched muffled sound whenever i am WOT. I actually want to hear something and enjoy the deep sound of the engine without forking out $400+ for a loudmouth series. Ive considered cut outs but they are way to loud, and still a good dollar.. Is there any modding that can be done to help??
Old 04-19-2010, 07:08 PM
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Can i just switch out the stock muffler with a flowmaster or an slp LM1 muffler directly and leave the stock pipes and everything else
Old 04-19-2010, 07:29 PM
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The LM1 muffler is going to require alot of modification to get it to work with the stock catback because the LM1 muffler is not in the rear of the car it is before the axle. But a flowmaster or magnaflow muffler can replace the stock muffler really easy and give you a better sound and a little more power. I would HIGHLY recommend the magnaflow as I think its one of the best sounding exhausts/mufflers for our cars
Old 04-19-2010, 07:38 PM
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Originally Posted by Starz T/A 17
The LM1 muffler is going to require alot of modification to get it to work with the stock catback because the LM1 muffler is not in the rear of the car it is before the axle. But a flowmaster or magnaflow muffler can replace the stock muffler really easy and give you a better sound and a little more power. I would HIGHLY recommend the magnaflow as I think its one of the best sounding exhausts/mufflers for our cars
Yeah i want something simple and effective either the FM or magna, i havent found a mag but this is the flowmaster i am looking at

http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

I went out and looked at my 00' z28 and i believe the muffler is right behind the rear tires. There is 2 holes looks like 2.5" & 3" and a single 2.5" on the other. The 3" pipe coming from the exhaust, and the two 2.5"s going to the tips. Can anyone confirm these sizes? After the part comes in would all that needs to be done replace and weld the new muffler on?

Last edited by The Mighty Texan; 04-19-2010 at 08:10 PM.
Old 04-19-2010, 07:58 PM
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Hooker offers their aerochamber muffler as a direct replacement.

Out of the three posted, I would personally do the aerochamber(very deep tone)
Old 04-19-2010, 08:01 PM
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Originally Posted by somws6bird
Hooker offers their aerochamber muffler as a direct replacement.

Out of the three posted, I would personally do the aerochamber(very deep tone)
According the the thread below though amazon is offering another 30% off magnaflow & flowmaster parts, since im looking for a cheap fix to keep my sanity i figured i would need to pick one of these up while the offer stands..

Edit: I just went out and measured more accutatly, the intake on the muffler is noticably bigger~2.7" the two out to the tips are smaller at 2.3". Is 3" and 2.5" just rounded or what? Anyways it appears like this flowmaster should work i just dont know much about this so i need to check

Last edited by The Mighty Texan; 04-19-2010 at 08:09 PM.
Old 04-19-2010, 08:49 PM
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thats what i have on my car helped alot on sound but im still going with a loudmouth catback soon
Old 04-19-2010, 09:11 PM
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a different muffler will do it
Old 04-19-2010, 09:32 PM
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Originally Posted by senicalj4579
a different muffler will do it
Yup! Just bought it!
Old 04-20-2010, 12:41 PM
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So now that its on its way i need to figure out how im gunna slap that **** on. After getting pricing from local muffler shops the norm is $60 bucks, around 1 hour of time. I dont see how it can be that hard.. just hack the old one off and weld the new on right? I've heard of some people welding 3 bolt flanges instead of a direct weld..Any suggestions on DIY? Since im in school its a little harder then just jacking it up at home and getting the old welder out, but i may be able to use the schools.
Old 04-23-2010, 04:06 PM
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bump.
Old 04-23-2010, 04:34 PM
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Magnaflow. Stay away from flowmaster they are very restrictive and sound like blahhh. I have ran them on two of my cars in the past, now I have magnaflow and wont go back to blowmaster.
Old 04-23-2010, 06:08 PM
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Simple cutout would do the trick. Regular manual one if you dont want to do electric. Price ranges from $30-50.
Old 04-24-2010, 01:33 AM
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ahh haha too late on the FM i'm sure anything is gunna beat the stocker. Ill let yall know how i like it or not. My main thing is how im gunna get it on there without paying the price of the thing again just to !@#%! put it on there!

as far as a cutout i did consider them, but those are soo loud and obvious. Sides, sounds good and deep runing through a exhaust not just loud as hell IMO
Old 04-24-2010, 05:10 PM
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Long ago I had a cutout and I made a custom plate out of sheetmetal for it. It sounded awesome. 40 bucks and a couple more for some sheetmetal and your done.
Old 04-29-2010, 12:00 AM
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Just got it in the mail today! Should i just got fork out the $60 install at a shop or wait till i can get ahold of a welder
Old 04-29-2010, 06:57 AM
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$60 is fair if he's going to fab up a pair of 2.5 tailpipes for it. It's a little stiff if he's just going to weld it in to the existing piping.

Since the sizing is different between the FM and the stock pipes, he'll have to lay down some thick beads. It'll take a little time. In all fairness, I can see an hour between in the door and out.

You will like how it sounds once it's in.
Old 04-29-2010, 07:23 AM
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new muffler, ! muffler, cutout
Old 04-29-2010, 07:40 AM
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Originally Posted by MikeWS6
Magnaflow. Stay away from flowmaster they are very restrictive and sound like blahhh. I have ran them on two of my cars in the past, now I have magnaflow and wont go back to blowmaster.
You fail.
Old 04-29-2010, 10:10 AM
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I have never liked Flowmaster either, but to each their own.

I have had Hooker catbacks on every f-body I have owned (except my formula, but I will eventually). They sounds really good without being overly loud and annoying. Plus they are supposed to flow very well.

Long tube headers with the stock catback sounds pretty good also.


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