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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 10-09-2009, 10:35 AM   #1
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DIY at home Muffler Delete for $20

Hey, tried something I dont think anyone's tried yet, and it worked out great. I wanted to do a muffler delete but have no money, so i just cut the muffler up and used the existing piping in it, only cost me welding wire and torch gas. Took about 5 hours of work total and less then an hour to swap catback's. Used a torch to cut the muffler away, a grinder to smooth edges and cut away excess, and a mig welder to weld up the perforated holes in the pipe, just used the existing mounts. Forgot to get pics of it finished, used rust resistant black paint to cover where all work was done, also helps hide the exhaust under the car. Works great and sounds great. I can post a video too but it sounds just like every other muffler delete, No poping, but a slight gurgling sound on decel. Definately a project though, if you have the money to have a shop just put in a pipe it would be cleaner and easier. but it was a fun and cheap project with great results





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Old 10-09-2009, 10:36 AM   #2
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Forgot to mention this is on the LS3, the L99 mufflers are different i believe
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Old 10-09-2009, 11:02 AM   #3
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I would fall asleep welding each hole shut! LOL Kudos.
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Old 10-09-2009, 11:11 AM   #4
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5 hours of work ............ I think I would just save up until I could go to a muffler shop for a clean replacement pipe for $50.
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Old 10-09-2009, 12:35 PM   #5
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I did this more for the sake of having a project, im used to fixing up older cars and doing modifications, new cars dont need any work and its boring. I feel like the car is more my own now that ive done some work too it.
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Old 10-09-2009, 12:38 PM   #6
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Also I bought a second stock exhaust to do this because I wanted to keep my original. So Its not like I've ruined anything if i decided to change my mind. I dont think anyone has done this yet, thats why I thought it was neat, just being resourceful.
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Old 10-09-2009, 12:42 PM   #7
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Quote:
Originally Posted by CDBiker220 View Post
Also I bought a second stock exhaust to do this because I wanted to keep my original. So Its not like I've ruined anything if i decided to change my mind. I dont think anyone has done this yet, thats why I thought it was neat, just being resourceful.
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Old 10-09-2009, 04:33 PM   #8
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Now that is a true backyard mechanic there!

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Old 10-09-2009, 04:40 PM   #9
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damn looks like a lot of work I paid a $100 and it came out super clean, new pipe and new tips and I still have the stock mufflers saved if I ever have to put them back on ... good job though!
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Old 10-09-2009, 06:55 PM   #10
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I'm thinking I might do the same with some slight differences. Do you think that if you used duct tape around the holes and secured it with baling wire it might hold?

I mean...that's the way MacGyver would do it.
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Old 10-09-2009, 07:26 PM   #11
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Not bad I wonder if you could have covered the holes with some sort of band clamp.
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Old 10-09-2009, 07:54 PM   #12
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Quote:
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I did this more for the sake of having a project, im used to fixing up older cars and doing modifications, new cars dont need any work and its boring. I feel like the car is more my own now that ive done some work too it.
It's nice to see someone do all the work themselves...

It's also nice to see what the inside of the mufflers look like.

It may not look great, but sounds great and you did what you wanted & that's all that matters......

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Old 10-09-2009, 11:51 PM   #13
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Very cool

Quote:
Originally Posted by CDBiker220 View Post
Also I bought a second stock exhaust to do this because I wanted to keep my original. So Its not like I've ruined anything if i decided to change my mind. I dont think anyone has done this yet, thats why I thought it was neat, just being resourceful.
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Old 10-09-2009, 11:52 PM   #14
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wow

Quote:
Originally Posted by Hicompression View Post
I'm thinking I might do the same with some slight differences. Do you think that if you used duct tape around the holes and secured it with baling wire it might hold?

I mean...that's the way MacGyver would do it.
:mad02 59:
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Old 10-10-2009, 09:16 AM   #15
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I am just glad somebody cut up the stock mufflers so we could see how they are designed inside. Maybe there is another picture out there somewhere but this is the first I have seen.

Just by looking at them, I am suprised the stock design kills so much sound. They are definently straight through, so a good design from GM on that aspect.
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Old 10-10-2009, 09:45 AM   #16
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5 hours of work ............ I think I would just save up until I could go to a muffler shop for a clean replacement pipe for $50.
I don't think anyone would do that for $50. ...
-----------------------------------------------------------------
This is what someone else paid........

Ended going with the muffler delete.
Just drove the car. It sounds great. And only $170 bucks. Can't beat it.

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Old 10-10-2009, 09:55 AM   #17
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Quote:
Originally Posted by CDBiker220 View Post
I did this more for the sake of having a project, im used to fixing up older cars and doing modifications, new cars dont need any work and its boring. I feel like the car is more my own now that ive done some work too it.
I totally know where you are coming from. Nice job!!
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Old 10-10-2009, 09:59 AM   #18
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I think it's a great idea you had. Was there "fiberglas packing" of some kind inside the cans, or just baffled and empty?
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Old 10-10-2009, 12:06 PM   #19
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There was like 1/2 inch thick steel wool like packing wrapped around the holes closest to the tailpipe. Not really packing, im really surprised how much louder it got given how straight through it is. Also I didnt get any final pics, i did alot more griding and then used rust preventive black paint to paint from where the muffler started to the tip, including the mounts, so you see nothing under the car. It doesnt look as terrible as you would think.
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Old 10-10-2009, 12:44 PM   #20
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Here is a pic under the car, looks pretty clean to me for what it is.
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Old 10-10-2009, 06:33 PM   #21
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How loud is that without the mufflers?
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Old 10-11-2009, 05:07 PM   #22
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Really not that loud. Its a bit loud on startup, and if you rev it its loud. At wide open throttle it is louder but not insanely loud, while cruising its barely louder than stock.
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Old 10-11-2009, 06:20 PM   #23
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Nice to inside the mufflers. No wonder why aftermarket mufflers dont gain much.
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Old 10-12-2009, 06:32 PM   #24
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I really like the finished pic, but would still like to see the tips left polished.
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