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No Mufflers on 03 Cobra

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No Mufflers on 03 Cobra - 7/6/2003 1:29:28 PM   
RedfireCobra

 

Posts: 1
Joined: 7/6/2003
From: United States
Status: offline 		I have an 03 Cobra and I was wondering if anyone has tried cutting off the mufflers and welding a piece of pipe in place. I was thinking of doing this because the cobra's stock exhaust is just too quite and I don't have enough money right now to get a cat-back system. Any comments will be greatly appreciated. Thanks!
Post #: 1
No Mufflers on 03 Cobra - 7/7/2003 7:03:17 AM   
flit

 

Posts: 11
Joined: 7/6/2003
From: United States
Status: offline 		Straight piped V8's rock.

(in reply to RedfireCobra)
Post #: 2
No Mufflers on 03 Cobra - 7/7/2003 9:44:22 AM   
Jugador1

 

Posts: 2963
Joined: 6/8/2003
From: United States
Status: offline

they're real damn loud though


(in reply to RedfireCobra)
Post #: 3
No Mufflers on 03 Cobra - 7/7/2003 5:47:50 PM   
03SVTcobraa

 

Posts: 245
Joined: 5/27/2003
From: United States
Status: offline 		If loud is what you're looking for, then I say go for it.

(in reply to RedfireCobra)
Post #: 4
No Mufflers on 03 Cobra - 7/13/2003 3:11:26 PM   
gumbo19

 

Posts: 9
Joined: 7/13/2003
From: United States
Status: offline 		 I say cut them and let it rip!!! It will be loud but wtf???

(in reply to RedfireCobra)
Post #: 5
No Mufflers on 03 Cobra - 7/17/2003 3:00:31 PM   
99dropTop

 

Posts: 303
Joined: 7/13/2003
From: United States
Status: offline 		you'll just have to pay a private garage to get it inspected.

(in reply to RedfireCobra)
Post #: 6
No Mufflers on 03 Cobra - 7/23/2003 9:53:34 PM   
robwazhere

 

Posts: 224
Joined: 6/8/2003
From: United States
Status: offline 		im getting this done in my cobra friday. dont hjave the money for the bassanis yet.

(in reply to RedfireCobra)
Post #: 7
No Mufflers on 03 Cobra - 7/26/2003 7:01:03 PM   
Dan04COBRA



Team MF Member #420
Posts: 14534
Joined: 7/24/2003
Status: offline
Dan04COBRA's photo gallery

I ran open headers on my 312 Iroc-z before. Heh that was freakin awesome, especially with all the lopeyness ;)


(in reply to RedfireCobra)
Post #: 8
No Mufflers on 03 Cobra - 7/31/2003 11:15:01 PM   
vfast

 

Posts: 11394
Joined: 7/16/2003
Status: offline 		well you better have some $$$ for the ticket your going to get

(in reply to RedfireCobra)
Post #: 9
No Mufflers on 03 Cobra - 8/1/2003 11:11:02 AM   
timothy281

 

Posts: 107
Joined: 4/12/2003
From: United States
Status: offline 		my friend did that on his 98 and dumped it but he left the muffler mounted under it so you could look under his car and it looks like it still has a muffler

(in reply to RedfireCobra)
Post #: 10
No Mufflers on 03 Cobra - 8/12/2003 3:27:17 PM   
Pyrro

 

Posts: 37
Joined: 8/12/2003
Status: offline 		I have electronic cut outs on my Redfire 03 Cobra.  I've also talked to many people who put straight pipes in and they love it.  I would imagine that it sounds like my cutouts except a bit more muffled.  I DO notice a drop in torque when I open the cut outs which is why I only open them at higher speeds and RPMs.  They are located after my cats and before my flowmasters.  Good luck. Pyrro37845.6446643519

(in reply to RedfireCobra)
Post #: 11
No Mufflers on 03 Cobra - 8/12/2003 3:55:51 PM   
Jugador1

 

Posts: 2963
Joined: 6/8/2003
From: United States
Status: offline 		put em 'fore the cats!

(in reply to RedfireCobra)
Post #: 12
No Mufflers on 03 Cobra - 9/12/2003 6:48:08 PM   
AVanGorder

 

Posts: 22
Joined: 9/12/2003
From: United States
Status: offline

What would be the effect of putting them before the cats?


(in reply to RedfireCobra)
Post #: 13
No Mufflers on 03 Cobra - 9/12/2003 9:12:22 PM   
Redline5th

 

Posts: 802
Joined: 7/17/2003
From: United States
Status: offline 		what are "electronic cut outs" ?

(in reply to RedfireCobra)
Post #: 14
No Mufflers on 03 Cobra - 9/13/2003 12:38:49 AM   
Jugador1

 

Posts: 2963
Joined: 6/8/2003
From: United States
Status: offline 		if you put em before the cats theres less to restrict it.  it is a cutout that when u flip a switch it opens it automatically.

(in reply to RedfireCobra)
Post #: 15
No Mufflers on 03 Cobra - 9/13/2003 4:43:58 AM   
AVanGorder

 

Posts: 22
Joined: 9/12/2003
From: United States
Status: offline 		Does the supercharged engine need some back pressure like a normally aspirated engine does?

(in reply to RedfireCobra)
Post #: 16
No Mufflers on 03 Cobra - 9/13/2003 10:05:50 AM   
Jugador1

 

Posts: 2963
Joined: 6/8/2003
From: United States
Status: offline 		no engine needs backpressure

(in reply to RedfireCobra)
Post #: 17
No Mufflers on 03 Cobra - 9/13/2003 11:55:22 AM   
mdvaldosta

 

Posts: 8826
Joined: 9/2/2003
From: United States
Status: offline
mdvaldosta's photo gallery

heres a descent article about backpressure, an example that Jugador is right on:


http://www.uucmotorwerks.com/html_product/sue462/backpressuretorquemyth.htm


(in reply to RedfireCobra)
Post #: 18
No Mufflers on 03 Cobra - 9/13/2003 12:01:17 PM   
SilverGTV8


Posts: 1974
Joined: 8/23/2003
From: United States
Status: offline
SilverGTV8's photo gallery

You need backpressure for torque.  For Horsepower you don't.  Backpressur eis just the act of using the reverse pressure from escapping gases to help pull exhaust out of the cylinders and down threw the ehaust system.


Exhaust works in waves.  cylinders fire at different times and exhaust at different times.  The less restriciton an exhaust has the better it will move the exhaust gases. A good design exhaust for the street involves setting the exhaust lenght for the optimum pulling wave from the exhaust.  Because most cars run in the lower rpm band backpressure gives good acceleration.  If one were to spend a lot of time at redline a non-back pressure system is better.


(in reply to RedfireCobra)
Post #: 19
No Mufflers on 03 Cobra - 9/13/2003 12:07:10 PM   
Jugador1

 

Posts: 2963
Joined: 6/8/2003
From: United States
Status: offline 		well actually they do apparently need some backpressure to "stabilize the pulses" as a source has told me.

(in reply to RedfireCobra)
Post #: 20
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