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10-03-2007, 03:12 PM
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#1
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Which muffler?
Got a choice of Flowmaster, Spintech or Magnaflow. Had twin flowmaster 40 series on the vette with the same motor and loved it, but i've never dealt with crossflow mufflers. Will follow LO5 350 w/edlebrock alum heads, Comp Cams Extreme Energy 274 cam, edlebrock shorties and twin cat y-pipe, 3" all the way back. Want to stay with dual tips so crossflow design is a must. Mufflex will install. What do you guys think?
-anyone have sound clips they'd like to share?
thx guys.
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
Last edited by 89CamaroRS; 10-03-2007 at 04:07 PM.
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10-03-2007, 03:19 PM
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#2
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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on my Z28 i have a 350 with the factory dual cats, into a custom y-pipe into a 3in pipe into a flowmaster muffler with a single outlet. its plenty loud for my daily driver and has a nice low rumble
__________________
86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
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10-03-2007, 03:28 PM
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#3
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Magnaflow. Flowmaster mufflers are not known for being great performance-wise, and their crossflow ones are the worst of their performers (IIRC).
The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq
Sound Off in Quietest to Loudest (Decibels):
1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).
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10-03-2007, 03:44 PM
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#4
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Join Date: Sep 2007
Location: Poconos, PA
Posts: 606
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go magnaflow
__________________
'96 Z28 Vert M6 - UMI LCA's,UMI SFC's,BMR Panhard rod(soon to be UMI),UMI Short Shifter,Custom clutch, SLP CAI, SLP Strut Brace, Skip Shift Elim, MagnaFlow Catback,160 stat, Tb bypass, Air Foil ,prothane motor mounts & tranny mount, Stainless Radiator Shroud, Hooker headers with magnaflow hiflo cats, brand spanking new tranny, Umi torque arm , C5 brakes all 4 corners .
Soon to come... New paint , and glass .
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10-03-2007, 04:03 PM
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#5
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Magnaflow seems to be the favorite, does anyone have anything against Spintech? I really liked the exhaust note from the few clips i could find online. Can't argue with the HP numbers though...(thx billy)
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
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10-03-2007, 04:08 PM
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#6
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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I'd go with either Magnaflow or Spintech.....both sound good.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-03-2007, 05:10 PM
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#7
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Join Date: May 2007
Location: Cherry Hill, NJ
Posts: 150
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i had the hooker on my 3rd gen... it sounded nice!
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10-03-2007, 05:51 PM
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#8
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12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
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brand spankin new hooker cat-back for sale in classifieds...on the cheap!
i currently have the same setup on my car and i love it.
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87 iroc with the usual go fast stuff
heavier than your half ton.
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10-03-2007, 06:48 PM
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#9
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Join Date: Jul 2006
Location: unknown
Posts: 2,776
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__________________
2000 Pewter Trans am, M6, SLP Lid,LS6 intake,Kooks 1 7/8" Long tube header,Classic Chambered Powersticks, hurst,off road X-pipe, Strano springs & Koni's, Monster level 2 clutch, HPtuners wide band tuned and a homemade ram air box sealed off.
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10-03-2007, 09:22 PM
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#10
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Join Date: May 2006
Location: Millville, NJ
Posts: 38
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I'd go for an eletric cut out, with stock cat back.
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1999 Camaro SS M6
2006 Ford F250
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10-03-2007, 10:39 PM
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#11
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by naSSty99ss
I'd go for an eletric cut out, with stock cat back.
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His stock cat back is 2 1/4 crimp bent......3rd gen 2.8L = not good for a healthy 350 to breath through.....
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-04-2007, 12:50 PM
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#12
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Quote:
Originally Posted by DaSkinnyGuy
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that sounds amazing. wish i had an ls1 though, lol. I'm thinking for overall exhaust note, Spintech's got it.
Quote:
Originally Posted by Tru2Chevy
His stock cat back is 2 1/4 crimp bent......3rd gen 2.8L = not good for a healthy 350 to breath through.....
- Justin
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I couldn't bear to put a stock catback on this car. I ended up cutting off a fairly new stock 2.8L system when i started the conversion. But hey nasty, if ya need a back up muffler or cat, i got a pretty news one sittin in a scrap heap right now bro. (didn't cut them, lol)
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
Last edited by 89CamaroRS; 10-04-2007 at 12:52 PM.
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10-04-2007, 06:55 PM
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#13
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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i have the 3" hooker cat back on my 88 with headman headers and a magnaflow high flow cat, sounds awesome
__________________
86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
12 Tahoe LT
17 Malibu LT
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10-06-2007, 07:36 PM
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#14
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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He's getting a 4" Mufflex catback with a Spintech muffler installed next week 
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-07-2007, 12:58 PM
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#15
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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a 4 inch system!?!?! is his motor really that mean?
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Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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10-07-2007, 03:24 PM
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#16
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Join Date: Jul 2007
Location: Middlesex, NJ
Posts: 462
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u should try out the new flowmaster super 44 series muffler...looks pretty mean and im thinkin bought gettin it myself
__________________
Harry (Proud member of NJFB) www.myspace.com/newjerseyfbodies
1986 FireBird LG4
-FlowMaster 3inch American Thunder -Edelbrock Elite Series Intake -WS6 Style Functional Ram Air Hood -B&M Shift Kit -American Racing Outlaw II Alloys -Fuzion HRI Tires
8/26/07 Just reached 160K and running great!
1/15/09 Just reached 180K and still running great!
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10-07-2007, 04:17 PM
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#17
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by Ian
a 4 inch system!?!?! is his motor really that mean?
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It's not that insane, but he figured he'd get it done once now and be good. It's a 350 with Performer RPM heads and the same cam I have (.490/.490 230/236 110 LSA ground +4 degrees).
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-07-2007, 06:49 PM
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#18
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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unless he plans on really stepping up his game, that sounds like too much exhaust to me. but, what do I know? 
__________________
Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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10-07-2007, 06:55 PM
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#19
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Eh.....let it breathe. He's still got puny headers/y-pipe on it (Edelbrock TES dual cat setup).
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-07-2007, 11:43 PM
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#20
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Join Date: Feb 2007
Location: hamilton nj / glassboro nj
Posts: 916
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my friend has a nice system put in by mufflex. he had a spintech muffler sounds awesome
__________________
I am the artist formerly known as 95 red slp
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10-09-2007, 05:04 PM
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#21
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Quote:
Originally Posted by Ian
a 4 inch system!?!?! is his motor really that mean?
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It's not that mean right now, but i'm not done with it yet. It is probably a bit more than i need now, but justin's right; wanted to get it done once, and properly. Now, no matter what i do to the motor i'll never have to mess with the exhaust system again.
Quote:
Originally Posted by 95 red slp
my friend has a nice system put in by mufflex. he had a spintech muffler sounds awesome
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I'm loving it. I used to be an exclusively flowmaster guy, but Spintech's exhaust note converted me.
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
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10-09-2007, 06:21 PM
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#22
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by 89CamaroRS
Now, no matter what i do to the motor i'll never have to mess with the exhaust system again.
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Well, you do need a nice set of LTs when you can afford it......
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-09-2007, 06:41 PM
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#23
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Quote:
Originally Posted by Tru2Chevy
Well, you do need a nice set of LTs when you can afford it......
- Justin
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yeah, no ****. Those edlebrocks u sold me were so rusty that mufflex said they couldn't take the air tubes off cuz their welder would've punched holes instead of closing them. That of course means my centerbolt looms dont fit, which means my sparkplugs wires dont fit. I have a plan for them tomorrow, but for the moment....YOU BASTURD!!! lol.
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
Last edited by 89CamaroRS; 10-09-2007 at 06:41 PM.
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10-09-2007, 08:51 PM
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#24
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by 89CamaroRS
yeah, no ****. Those edlebrocks u sold me were so rusty that mufflex said they couldn't take the air tubes off cuz their welder would've punched holes instead of closing them. That of course means my centerbolt looms dont fit, which means my sparkplugs wires dont fit. I have a plan for them tomorrow, but for the moment....YOU BASTURD!!! lol.
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Hey, I never made any promises.....you got them dirt cheap, and they are way better than the POS setup you had on the 'vette. 
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-09-2007, 09:27 PM
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#25
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 164
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Quote:
Originally Posted by Tru2Chevy
Hey, I never made any promises.....you got them dirt cheap, and they are way better than the POS setup you had on the 'vette.
- Justin |
bah.....doesn't happen often but when ur right, ur right. i'm gonna make'em work tomorrow anyway. it'll be ugly, but i think it'll work. dremel the tubes off leaving about a 1/4 of the tube, sand off the rust inside and out and plug the small holes with similiar sized bolts and exhaust system crack sealer. <--found some real good stuff that is tough as hell. figure that'll hold till i can afford LT's, shouldn't be long.
__________________
>2008 Corvette - Borla catback/K&N
>2004 Jeep Grand Cherokee Limited 4.7L HO 4x4 black/grey
>1985 Honda Sabre V65 1100 - jetted/K&N
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