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Old 03-10-2013, 11:42 PM   #1
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No mufflers?

In my county you don't have to have any sort of emissions test done once the car it 25 years or older, so I could in theory just take of my mufflers with no problems legally. I was looking and I would leave the one set of cats, but everything else would be gone, just straight pipes. Now, what would that do to it mechanically? Would it cause any damage to the motor or anything else?
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Old 03-10-2013, 11:45 PM   #2
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So pretty much straight pipes after the cats? You will be fine. Very loud, but fine.
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Old 03-11-2013, 12:42 AM   #3
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You will lose back pressure and could lose some hp but idk how much if any
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Old 03-11-2013, 12:56 AM   #4
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Mufflers have nothing to do with emissions. Thats what your cat converters are for. Mufflers are there to "muffle" the sound. I prefer flowmaster 40s or 10s over straight pipes.
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Old 03-11-2013, 06:48 AM   #5
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Originally Posted by keaton5.0 View Post
Mufflers have nothing to do with emissions. Thats what your cat converters are for. Mufflers are there to "muffle" the sound. I prefer flowmaster 40s or 10s over straight pipes.
I prefer those as well, I just have no money for them so to make them louder cheap ill do straight pipes.
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Old 03-11-2013, 08:14 AM   #6
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Quote:
Originally Posted by DerekJohnScott
In my county you don't have to have any sort of emissions test done once the car it 25 years or older, so I could in theory just take of my mufflers with no problems legally. I was looking and I would leave the one set of cats, but everything else would be gone, just straight pipes. Now, what would that do to it mechanically? Would it cause any damage to the motor or anything else?
Man I have my car the same cats but no mufflers an you will lose a little HP but get a little low end torque so you don't but in my country I have to e test it but I still past last year with no mufflers an it was alot cheaper 100 bucks is all it cost me haha
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Old 03-11-2013, 08:15 AM   #7
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So pretty much straight pipes after the cats? You will be fine. Very loud, but fine.
Yes, that's what I want!

---------- Post added at 07:15 AM ---------- Previous post was at 07:14 AM ----------

If I could have zoomies I would.
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Old 03-11-2013, 08:17 AM   #8
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Originally Posted by DerekJohnScott

Yes, that's what I want!

---------- Post added at 07:15 AM ---------- Previous post was at 07:14 AM ----------

If I could have zoomies I would.
Haha it's going to be right loud pout some good headers on it an high flow cats an it will scream haha
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Old 03-11-2013, 01:17 PM   #9
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I just took off my dyno Max mufflers and omfg!!! It sounder sooooo good! I've got a heads cam intake motor so it sounds like a damn race car but stock I hears sounds stupid. Although if you take off your mufflers your cats and pipe will aag to the ground cause the only thing holding them up is the muffler hangers and the headers. At least that's how mine is. But if you can deffinatley do it neighbors gonna hate you though
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Old 03-11-2013, 03:59 PM   #10
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I just took off my dyno Max mufflers and omfg!!! It sounder sooooo good! I've got a heads cam intake motor so it sounds like a damn race car but stock I hears sounds stupid. Although if you take off your mufflers your cats and pipe will aag to the ground cause the only thing holding them up is the muffler hangers and the headers. At least that's how mine is. But if you can deffinatley do it neighbors gonna hate you though
The guy that did my just put some custom hangers lol i had a Brokein hanger on my mufflers when I first got it so I just had them take the mufflers off an man it sounded so good just gear up an drop the rpms down to like 1200 when there's a cop behind you hahaha
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Old 03-11-2013, 07:05 PM   #11
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Some one tell me why not remove the cats and leave the muffs and if u go straight pipe i think u should just with a smaller pipe but just think out of the box
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Old 03-11-2013, 07:17 PM   #12
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I gotta quick question. If I was to cut my muffs off and weld pipes straight back would I need a bender or could I get away with backyard bending?
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Old 03-11-2013, 08:10 PM   #13
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You will lose back pressure and could lose some hp but idk how much if any
Losing back pressure is a good thing, losing exhaust velocity is bad.
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Old 03-11-2013, 08:13 PM   #14
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Originally Posted by DerekJohnScott View Post
In my county you don't have to have any sort of emissions test done once the car it 25 years or older, so I could in theory just take of my mufflers with no problems legally. I was looking and I would leave the one set of cats, but everything else would be gone, just straight pipes. Now, what would that do to it mechanically? Would it cause any damage to the motor or anything else?
It'll be loud as hell and you'll get sick of it after a while but it won't cause any damage. I would save up and get an off road mid-pipe and either some bullets or flowmaster 10s.
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Old 03-11-2013, 08:16 PM   #15
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Leave taking off mufflers and leaving cats to the Chevy truck guys.. Sounds like *** IMO.. Lose the cats and leave the mufflers..
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Old 03-11-2013, 09:41 PM   #16
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I'm going to try it. What about just putting in glass packs? Their cheap.
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Old 03-11-2013, 09:43 PM   #17
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I'm going to try it. What about just putting in glass packs? Their cheap.
I would try you tube to listen to a few setups. You may end up not liking how glass packs sound and you'll be out the cost.
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Old 03-11-2013, 09:48 PM   #18
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Quote:
Originally Posted by DerekJohnScott View Post
In my county you don't have to have any sort of emissions test done once the car it 25 years or older, so I could in theory just take of my mufflers with no problems legally. I was looking and I would leave the one set of cats, but everything else would be gone, just straight pipes. Now, what would that do to it mechanically? Would it cause any damage to the motor or anything else?
If it isn't supercharged you will loose hp at high Rpms and torque at low Rpms plus you have the chance of throwing a rod. Just have a muffler shop run you some 3" pipe to some 40 series out the back. That's what I have. Sounds loud but deep and keeps just enough back pressure to make the hp and torque increase. Plus it looks so crazy with 3" straight pipes coming out the back.
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Old 03-11-2013, 10:11 PM   #19
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Look up Flowtech Raptors on YouTube. They're about $30 each. I had a 95 with straight pipes and I HATED it! Just my two cents.
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Old 03-11-2013, 10:14 PM   #20
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If it isn't supercharged you will loose hp at high Rpms and torque at low Rpms plus you have the chance of throwing a rod. Just have a muffler shop run you some 3" pipe to some 40 series out the back. That's what I have. Sounds loud but deep and keeps just enough back pressure to make the hp and torque increase. Plus it looks so crazy with 3" straight pipes coming out the back.
Do realize that is mostly myth, if anything 3" straight pipes all the way back would do more harm than good. Throwing a rod is pure myth as well. Getting rid of back pressure while increasing velocity is what you would want to do.
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Old 03-11-2013, 10:28 PM   #21
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Do realize that is mostly myth, if anything 3" straight pipes all the way back would do more harm than good. Throwing a rod is pure myth as well. Getting rid of back pressure while increasing velocity is you would want to do.
+1
Another round of the infamous backpressure myth. Lol.
The best dyno proven setup would be e reverse funnel type setup.
Example. 2 1/4" collector. 2 1/2" mid pipes 3" mufflers with 3 1/2 tips.

If you lose power do to the proposed "backpressure" its because of tune. Not because of backpressure.
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Old 03-12-2013, 08:00 AM   #22
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All I wanted to do is see if I could make my car louder cheaply...
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Old 03-12-2013, 08:05 AM   #23
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I run glasspacks on my 02 gt and love the sound. Keep in mind that I have shorty headers and an off road x-pipe also


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Old 03-12-2013, 08:27 AM   #24
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Leave taking off mufflers and leaving cats to the Chevy truck guys.. Sounds like *** IMO.. Lose the cats and leave the mufflers..
^Yup

Leave your current mufflers and buy an off road H pipe. It will be loud AND sound great. These are pretty cheap and it's something you can do at home.
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Old 03-12-2013, 09:06 AM   #25
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10 series
FTW!!!!!
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Old 03-12-2013, 09:16 AM   #26
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10 series
FTW!!!!!
Yes

BBK shorties, BBK o/r x pipe and flowmaster 10s.

http://youtu.be/CEblu8y8uOY

Open exhaust after the downpipes.
http://youtu.be/mqCoFQH64oU
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Old 03-12-2013, 09:17 AM   #27
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Also 10s aren't that much more compared to glass packs.
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Old 03-12-2013, 10:10 AM   #28
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Also 10s aren't that much more compared to glass packs.
Exactly. They are 50 ish a piece $ and well worth it. There isn't much restriction in them. Just enough to give them a great sound. I went from 40 series to 10s and will never go back. It's funny cause I used to think the ol 2 chambers were the best thing ever. When I first fired it up after the 10s install, me and my buddy looked at each other at the same time with a big *** smile and said "holy ****" at the same exact time. Lol. Classic...
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Old 03-12-2013, 10:41 AM   #29
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Exactly. They are 50 ish a piece $ and well worth it. There isn't much restriction in them. Just enough to give them a great sound. I went from 40 series to 10s and will never go back. It's funny cause I used to think the ol 2 chambers were the best thing ever. When I first fired it up after the 10s install, me and my buddy looked at each other at the same time with a big *** smile and said "holy ****" at the same exact time. Lol. Classic...
Your welcome. Lol
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Old 03-12-2013, 11:08 AM   #30
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Your welcome. Lol
Lol.(praising on hands and knees)
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Old 03-12-2013, 11:11 AM   #31
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Lol.(praising on hands and knees)
Are the 10's a lot louder than the 40's or 44's?
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Old 03-12-2013, 11:18 AM   #32
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Are the 10's a lot louder than the 40's or 44's?
My 93 is louder than my 90 with 44s, but the 44s seem like they have a deeper tone at idle.
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Old 03-12-2013, 11:25 AM   #33
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Are the 10's a lot louder than the 40's or 44's?
My 10s are way louder than the 40s I had. Like night and day. They are only like half the size.
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Old 03-12-2013, 11:35 AM   #34
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My 93 is louder than my 90 with 44s, but the 44s seem like they have a deeper tone at idle.
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My 10s are way louder than the 40s I had. Like night and day. They are only like half the size.
Thanks guys. I'm thinking about doing weld-ins now. I have flowmaster tips now, so that would work out great. I just want to get that o/r H pipe on there ASAP.
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Old 03-12-2013, 12:19 PM   #35
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So... 10s are the loudest? I want it to be super loud.
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