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09-17-2017, 06:07 PM
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#1
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Join Date: Feb 2008
Posts: 26
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Seeking opinions on new CAT back
1995 Firebird with LT1 - currently have Corsa system behind Kooks long tubes. As you know, engine is basically small block chevy with some tweaks.
Looking to replace with Flowmaster, Magnaflow or “door # 3” (suggestions welcome). Frankly the Corsa’s are too loud for my old ears after ~ 10 plus years. In addition, I am looking to gain an additional 0.5 to 1.0 inches of ground clearance. The Corsa at 5.0 inches deep currently has ~ 4.0 inches of ground clearance and is wearing a nice dent in the center section
Your thoughts?
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Tom - Wayne NJ
"They're no good for you......all they ever think about are cars" - Two Lane BlackTop
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09-17-2017, 06:26 PM
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#2
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Lord of the rings / 10 Second Club / Meet Coordinator
Join Date: Aug 2004
Location: Millstone Township, NJ
Posts: 6,361
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Hit up Ed Pontiac. He wanted more sound from his Magnaflow system so if yours is louder, maybe a swap is in order.
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97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
17 Sierra 2500HD Dmax
81 Turbo TA
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09-17-2017, 07:29 PM
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#3
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American Road Warrior
Join Date: Jul 2005
Location: Wastelands of NJ
Posts: 6,116
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I had a Flowmaster cat back on my 94 TA back in the day and it was ok...but now I think Flowmaster has been played out. Spintech makes some nice mufflers and IIRC they have a few to chose from according to how raucous you want to be.
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unstable bob gable: LEGENDARY LEGEND,
ICONIC ICON, AND AMERICAN BAD AZZ!!!
1991 Dodge Spirit R/T: Gran'pa lookin' 150+ mph turbo rocket.
2013 Dodge Avenger RT: Wastelands cruiser.
2008 Crown Vic Police Interceptor: 'Nuff said!
THE ONLY THING THAT SUCKS WORSE THEN IMPORTS ARE RICED OUT IMPORTS!!!
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09-18-2017, 11:48 AM
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#4
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The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,867
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I would love to hear your car, don't think I've heard Corsa's on an LT1. I wouldn't mind something louder 
I have hooker currently and it's a very nice blend of quiet at cruising and loud at WOT (for a catback only car). It does have a bit of a drone if it stays at 2500 rpm or so though.
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1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
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 Team FARM 
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09-18-2017, 12:27 PM
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#5
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,260
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Rust master sucks. Don't touch with a 10foot pole.
Do you have cats? Maybe put a resonator in your y pipe to tone it down
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1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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09-18-2017, 08:57 PM
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#6
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Join Date: Jun 2016
Location: Millstone
Posts: 142
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Id go magnaflow
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09-18-2017, 09:50 PM
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#7
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by DirtyBird
Id go magnaflow
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Me too 
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09-18-2017, 10:10 PM
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#8
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Join Date: Mar 2008
Location: Somerset, NJ
Posts: 4,223
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try checking on youtube for sound clips of different lt1 exhausts. from what i've heard magnaflow and borla are really great for these cars.
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Jon
1999 Trans am WS6
1996 Corvette LT4 6 speed
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09-19-2017, 08:51 AM
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#9
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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I had a magnaflow and I liked it. Had a deep rumble at idle and flowed well, but wasn't loud enough for me. I ran it with stock manifolds, then LTs with catted y, then added a cam with it. If I change my setup down the road I would go back to MF or try a borla.
Tried a used hooker aerochamber and that was nice. I liked the tone, but it felt restrictive. Swapped that for a corsa which is really loud, especially with LTs and ORY, but I like it since I don't daily the car anymore.
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1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick 
2014 2LT Cruze 2.0 Turbo Diesel
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09-19-2017, 11:51 AM
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#10
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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I put a Magnaflow Firebird/Camaro on my 1994 25th Anniversary within the last few months. Since my Bird is a show car only, I was looking to get some extra rumble and have a stock look. When I first started in up, it sounded just like stock. I checked with Magnaflow and was told their muffler was designed to be close to stock as it is listed as a REPLACEMENT muffler and therefore they didn't want to drift too far from what was stock. I also found out it takes 700/800 miles to BREAK IN (meaning it will get a better rumble). My muffler did pick up some sound when letting off on the gas and sounds good at WOT, but it does NOT sound like an LS1 engine at idle. 
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1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
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09-19-2017, 04:57 PM
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#11
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,153
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Quote:
Originally Posted by edpontiac91
...sounds good at WOT, but it does NOT sound like an LS1 engine at idle. |
well, its essentially a SBC so, yeah....
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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09-19-2017, 08:35 PM
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#12
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Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
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I'll trade my magnaflow with Corsa Clone tips an a cutout straight up for a real Corsa!
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09-20-2017, 11:58 AM
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#13
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,260
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https://youtu.be/P4cGbUpNDPo
This is just gmmg, stock headers and y
https://youtu.be/yvJ4ileSKqw
Lpp long tubes, no cat, gmmg... Raspy lol
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
Last edited by ThoR294; 09-20-2017 at 11:59 AM.
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