Exhaust Help - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 30 (permalink) Old 09-24-2008, 06:30 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Unhappy Exhaust Help

I just bought this 1995 SC 5 speed (Great car right?) Well, I'm at a loss here. My exhaust is already mess, now it's terrible I went to the exhaust shop to have them look at my cats. One of them was rattling. So we took the cats off, one was completely missing it's element and i think the big third cat was broken up also. They deleted the cats, put in straight pipe, those pipes Y into a single magnaflow cat (they put this in last to try and kill the buzz) after the magnaflow cat, it goes to a single 3 inch pipe, then to glasspack looking thing that was already installed when i bought it (like a resonator), then it Y's into two "turbo" mufflers with turn down tips at the bumper. At first it had flowmasters in place of the turbo mufflers, they told me if i replaced the flow's with turbo mufflers that it would fix the buzz also. So far it cost me 70$ to fix the cat issue, and then i spent 130$ on basically a wild goose chase. The exhaust sounds ok i guess, the biggest problem is at 2500rpm or so there's a buzz, while the motor goes through that RPM range. It sounds terrible, it's embarassing to even drive the car. Basically i believe the whole exhaust system from the headers back needs to be replaced, it's so hacked up. There isn't a piece of factory pipe left. It really just makes me sick, it's such a nice car. The exhaust has just ruined the experience, driveability.

What do i need to do, for an exhaust system. I'd like a little bit of "tone" but hell i'd even just take a "factory quiet" sound over that hideous buzz/resonation. I looked at SCP, but god i can't afford 750$ for a full exhaust system. There's gotta be some cheaper options?

I'll try and get a crude diagram made in paint, but i doubt it'll matter. I think you all will understand it's trash, and i don't think it's even worth dicking with anymore. I'll keep the mufflers they're brand new, maybe sell them or use them somewhere else. Please Help
Green95LX is offline  
Sponsored Links
Advertisement
 
post #2 of 30 (permalink) Old 09-24-2008, 06:49 PM
 
Join Date: Feb 2008
Posts: 362
Flowmaster makes a catback system, part# 17111
MikeRWK is offline  
post #3 of 30 (permalink) Old 09-24-2008, 06:54 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
One other thing, the muffler shop says it'll always sound like that if i dont have cats. Is this true? Even if i had some "grandma series" mufflers on it? Will i have to put a new set of cats?
Green95LX is offline  
Sponsored Links
Advertisement
 
post #4 of 30 (permalink) Old 09-24-2008, 07:14 PM
2nd Gear Poster
 
fly360's Avatar
 
Join Date: Jan 2008
Location: Oak Harbor, WA.
Age: 47
Posts: 93
After what I had done to my 96, I would get it as close to stock as you can with high flow items in place. Cats to resonator to mufflers. I put two high flow cats to a single pipe then to two high flow mufflers, and I can't stand the drone in the car at highway speeds. I have to take it back and have them install the resonator back in it. That will also eliminate most of the raspy rattle during acceleration. That is what I've been told. Hope this helps.

May the Gremlins never find you.
fly360 is offline  
post #5 of 30 (permalink) Old 09-24-2008, 08:15 PM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
well this is your chance to redo thr exhaust all over and get it done right my suggestion to you is do 2.5 inch true duels with flowmaster 40 series mufflers and high flow cats. that thing will pur with that.

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #6 of 30 (permalink) Old 09-24-2008, 09:32 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
i just dont think flowmasters are really what i'm looking for. I'd really rather have a slight tone or really just quiet.

Last edited by Green95LX; 09-24-2008 at 09:44 PM.
Green95LX is offline  
post #7 of 30 (permalink) Old 09-24-2008, 09:37 PM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
there are different flowmaster you can get quiet ones or loud ones from them just depends on how straight through you want it to be.

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #8 of 30 (permalink) Old 09-24-2008, 09:46 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
oh, i know. I just don't want this raspy buzz tone EVER again, nothing even remotely close!. I'd rather err on the side of caution and have it TOO quiet, than i would to spend even MORE money and still be unhappy with it. Think along the lines of a factory type sound, maybe a bit louder.
Green95LX is offline  
post #9 of 30 (permalink) Old 09-24-2008, 10:17 PM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
go to a junk yard then a grab a set of stock mufflers off a wrecked bird. would im sure be reasonably cheap

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #10 of 30 (permalink) Old 09-25-2008, 12:02 AM
Seasoned PostWhore
 
twin turbo 281's Avatar
 
Join Date: Oct 2006
Location: Auburn WA
Age: 35
Posts: 2,631
Send a message via MSN to twin turbo 281
i think hooker max flows would d oa good job but ive never heard them on a 3.8 they sound good on the 4.0s

there probally the quietest strait thru muffler listen to how quiet this blown camaro is

2x95 cougars to the scapper
97 F250 psd 4x4 dd twin charged
48 Gmc Detroit diesel 453t twin sticked
45 Chevy 451 detroit twin sticked
51 Mack A51T restoration

Last edited by twin turbo 281; 09-25-2008 at 12:10 AM.
twin turbo 281 is offline  
post #11 of 30 (permalink) Old 09-25-2008, 12:50 AM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Well, how would it be with catless downpipes, a resonator or muffler midmounted, then two mufflers at the rear bumper? I'm thinking there has to be some quieter mufflers out there that'll bring the noise down. Suggestions on a resonator/muffler or the rear mufflers? Maybe something along the lines of a "quiet flo"
Green95LX is offline  
post #12 of 30 (permalink) Old 09-25-2008, 12:51 AM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
Quote:
Originally Posted by twin turbo 281 View Post
i think hooker max flows would d oa good job but ive never heard them on a 3.8 they sound good on the 4.0s

there probally the quietest strait thru muffler listen to how quiet this blown camaro is
does that have a bypass valve on the exhaust? cause it starts of pretty rumbly then quiets down

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #13 of 30 (permalink) Old 09-25-2008, 02:08 AM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Is it absolutely critical that i add cats? Is there no way i can go catless and have a good sounding exhaust. Like i was saying earlier, i'd be ok if it sounded just like a factory SC maybe a little bit louder. I just can't deal with it the way it is now.

Last edited by Green95LX; 09-25-2008 at 12:57 PM.
Green95LX is offline  
post #14 of 30 (permalink) Old 09-25-2008, 11:21 AM
5th Gear Poster
 
Join Date: Oct 2002
Location: ny
Posts: 390
exhaust

Quote:
Originally Posted by Green95LX View Post
Is it absolutely critical that i add cats? Is there no way i can go catless and have a good sounding exhaust. Like i was saying earlier, i'd be ok if it sounded just like a factory SC maybe a little bit louder. I just can't deal with it the way it is now.
u need the cats,(if u want to pass inspection,at least up here in ny) go with high flow cats.i did mine a few months ago but my flowmasters are loud when i get on them so i have that drone once i get on it.me.i like it but alot don't.magnaflows are quiet .....cost more and have the polished look but to each his own.
HFD-E2 is offline  
post #15 of 30 (permalink) Old 09-25-2008, 01:00 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
It's not even the drone i'm afraid of, it's ONLY that raspy buzz. If i went with quiet mufflers and a magnaflow center muffler would i be able to stay cat-less
Green95LX is offline  
post #16 of 30 (permalink) Old 09-25-2008, 02:13 PM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
you have to have cats, i think all states require them if im not mistaken.

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #17 of 30 (permalink) Old 09-25-2008, 02:58 PM
Seasoned PostWhore

Super Moderator
 
Join Date: May 2003
Location: Tinton Falls, NJ
Age: 37
Posts: 7,443
Garage
Send a message via AIM to MadMikeyL
The exhaust shop is correct. Without cats, the 3.8 is going to sound like complete garbage no matter what else you do. Get a couple high-flow cats installed near where the factory cats were, and with the mid-mount and the turbo muffs out back, it should get rid of that swarm-of-bees-in-a-soda-can sound that the 3.8 likes to make.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
MadMikeyL is offline  
post #18 of 30 (permalink) Old 09-25-2008, 08:27 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
dang, i was hoping somehow i could get away with just having 3 mufflers and leaving cats out of it. They add more to the price.
Green95LX is offline  
post #19 of 30 (permalink) Old 09-25-2008, 08:45 PM
Seasoned PostWhore

Super Moderator
 
Join Date: May 2003
Location: Tinton Falls, NJ
Age: 37
Posts: 7,443
Garage
Send a message via AIM to MadMikeyL
Go on ebay and you can get high-flow cats for pretty cheap. I usually run this style

http://cgi.ebay.com/ebaymotors/Stain...spagenameZWDVW

I have 3" versions of them on my 393 car, and will be installing a set of 2.5" ones in my 89XR7 when I get that back on the road. I also had a set of 2.25" ones in my 94 4.6L cougar, and I never had a problem with them.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
MadMikeyL is offline  
post #20 of 30 (permalink) Old 09-26-2008, 05:00 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Well, i'm wondering if i went with. Two High Flow Cats, Mid Mount Dual In/Single 3in out Magnaflow, into the mufflers that the exhaust shop already sold me
http://www.apexhaust.com/product_pag...ator_turbo.asp

What will it sound like? The mufflers now sound ok, other than the "metallic buzz" or are they trash? I kinda hate to get rid of them so soon, after spending money on them.

Last edited by Green95LX; 09-26-2008 at 05:17 PM.
Green95LX is offline  
post #21 of 30 (permalink) Old 09-26-2008, 05:18 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Also, for factory manifolds. Should i use 2.25 or 2.5 cats?

Are these cats any good?
http://cgi.ebay.com/ebaymotors/2-5-C...2em118Q2el1247
Green95LX is offline  
post #22 of 30 (permalink) Old 10-01-2008, 08:10 AM
PostWhore
 
Join Date: Apr 2005
Location: Walton, KY
Posts: 1,606
id say find a junkyard car and pull exhaust off of that as much as you can if you want cheapest/quietest. the mufflers and resonator and MAYBE cats could all be reused.

most people talk, but few are up for the moment
-where there's money and imagination, there's cool cars
ohhh the Junkyard , one man's trash is another man's treasure

1993 3.8L Tbird----sold
1994 4.6L Tbird----sold
1995 Mark VIII----sold
2004 Mustang GT----sold
2003 Mach 1----current
smitty2919 is offline  
post #23 of 30 (permalink) Old 10-02-2008, 10:18 AM
2nd Gear Poster
 
Join Date: Feb 2008
Location: ohio
Age: 29
Posts: 87
some states dont have inspection. Ohio where Im at doesnt, you can run whatever you want.
neverfastenough is offline  
post #24 of 30 (permalink) Old 10-02-2008, 11:19 AM
PostSlut
 
_95badbird's Avatar
 
Join Date: Jul 2004
Location: Spring Texas
Age: 39
Posts: 13,597
can you get a sound clip of it?

Nick......................I'm back!!!
May you fly low and fast
rest in peace JL
_95badbird is offline  
post #25 of 30 (permalink) Old 10-02-2008, 04:49 PM Thread Starter
 
Join Date: Aug 2002
Posts: 798
Well, i just need to know what size catalytic converters i need to run for factory manifolds? 2.25 or 2.5 inch? I'm fairly sure with two cats, running into a magnaflow mid-mount (dual 2.5 in/3inch out) then into the mufflers i currently have, it ought to be a fairly quiet system, with no "rattles/buzz"

What are some of the other common SC exhaust systems? I'm not looking for "ultra-quiet" or anything, but the buzz/resonation that i get at the mufflers currently, has to go.
Green95LX is offline  
post #26 of 30 (permalink) Old 11-13-2008, 06:07 PM
6th Gear Poster
 
crash00527's Avatar
 
Join Date: Nov 2005
Location: Lower Westchester, NY
Age: 41
Posts: 613
Send a message via AIM to crash00527
Flowmasters are awesome. they have a nice low, deep throaty rumble to them

1995 40th. Ann. Supercoupe
1 of 5,167
Black ~ AOD ~ Moonroof ~ 82K
SCCOA Member #3093
----------------------------------------------
CPL/0861/0844 USMC
Forward Observer/Fire Direction Center
Click below for Current PICS and MODS.
http://www.cardomain.com/ride/2466286
crash00527 is offline  
post #27 of 30 (permalink) Old 11-14-2008, 01:41 AM
Clueless Poster
 
v8_superbirdy's Avatar
 
Join Date: Jun 2008
Location: socal
Posts: 2,458
Send a message via AIM to v8_superbirdy Send a message via Yahoo to v8_superbirdy
i think i know what the problem is. i think i'm not sure maybe it was 95 that changed it but the 3rd cat the huge one was a resanator and i asked my uncle why he hadn't taken it off his 91sc he said it sounded like crap w/o it on. if i where you though i would go but the oem replacements if possible.

my other ride is an ambulance!
1997 V8 sport - first car - sold 6/7/10
2006 silver mustang gt premiumcustom made grill, frpp shorty headers, pypes cat back exhaust, hurst billet pro shifter,
v8_superbirdy is offline  
post #28 of 30 (permalink) Old 11-15-2008, 06:39 PM
 
Join Date: Sep 2008
Posts: 82
BOR-40652 112.00 ea

there expensive but borla makes a loud and quiet muffler . I Like this one at like summit or whoever it sounds good . friends ride has it does nt seem to drone
not like the x1 that is loud or those flowmasters that seem louder in the car .
To each his own good luck . This is the one I am trying to upgrade to myself.
solow is offline  
post #29 of 30 (permalink) Old 01-10-2009, 06:20 PM
6th Gear Poster
 
crash00527's Avatar
 
Join Date: Nov 2005
Location: Lower Westchester, NY
Age: 41
Posts: 613
Send a message via AIM to crash00527
Quote:
Originally Posted by Green95LX View Post
i just dont think flowmasters are really what i'm looking for. I'd really rather have a slight tone or really just quiet.
than no exhaust will do it for you but stock

1995 40th. Ann. Supercoupe
1 of 5,167
Black ~ AOD ~ Moonroof ~ 82K
SCCOA Member #3093
----------------------------------------------
CPL/0861/0844 USMC
Forward Observer/Fire Direction Center
Click below for Current PICS and MODS.
http://www.cardomain.com/ride/2466286
crash00527 is offline  
post #30 of 30 (permalink) Old 01-10-2009, 07:01 PM
6th Gear Poster
 
crash00527's Avatar
 
Join Date: Nov 2005
Location: Lower Westchester, NY
Age: 41
Posts: 613
Send a message via AIM to crash00527
i thought i might be nice and post this. hope it helps


http://forums.tccoa.com/showthread.php?t=52541

1995 40th. Ann. Supercoupe
1 of 5,167
Black ~ AOD ~ Moonroof ~ 82K
SCCOA Member #3093
----------------------------------------------
CPL/0861/0844 USMC
Forward Observer/Fire Direction Center
Click below for Current PICS and MODS.
http://www.cardomain.com/ride/2466286
crash00527 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome