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05-21-2010, 09:45 PM #1
Anyone TIRED of RASPY EXHAUST!!!?????
What up LS1's........OK so I've driven around for about 3 months now with my Pacesetter Ceramic Coated LT's (no cats) and Corsa catback. I noticed that without the cats on the exhaust was extremely raspy....Has anyone experienced this and does it ANNOY YOU???????
FWIW I just had two high flow converters installed and I must say ALL the raspy sound is gone.....I swear the decibel level must of decreased by at least 2 levels AND the crazy fumes that always choke me to death upon start up are gone. It's great...........Thoughts???????
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05-21-2010, 09:50 PM #2
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05-21-2010, 10:02 PM #3
I Have LT's with no cat, and magnaflow catback as well, and no troubles here.
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05-21-2010, 10:11 PM #4
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05-21-2010, 11:19 PM #5
i have LT's no cats and SLP exhaust but replaced the SLP resonator with a magnaflow bullet muffler and no rasp here
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05-22-2010, 12:10 AM #6
- Join Date
- Nov 2007
- Location
- Studio City, CA
- Posts
- 1,045
Red- 2001 Camaro SS
Dyno mouth here (loud mouth w/ a dynomax bullet) and a Magnflow Y merge. TONS OF RASP!!
As soon as i installed my 2 $37 ebay cats this week, no rasp at all!!! None! It all went away. I'm the happiest guy in the world..... except that i bought 402 today and now need to figure out my exhaust options again, haha.
Join the PHK2009 LS1.com Calendar Car
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05-22-2010, 01:17 AM #7
Cats go a long way to clean up the cars tone.
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05-22-2010, 04:27 AM #8
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05-22-2010, 04:50 AM #9
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05-22-2010, 06:29 AM #10
No rasp at all whatsoever with my setup. Kooks longtubes, 4" exhaust and a SpinTech.
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05-22-2010, 01:40 PM #11
- Join Date
- Feb 2007
- Location
- San Diego, CA
- Posts
- 5,823
2002 Z28 A4 NBM- Sadly now demodded :(
No rasp here either. See sig for exhaust details.
67 Camaro: K-K + 797-z (look it up), 454/Th400/4.10 12-bolt = 6mpg, PS/PDB/PW tilt, tach, gauges...
2005 Corvette LS2/M6 Magnetic Red Metallic (What else would it be?) w/ Cashmere interior
2002 Z28: NBM/Tan, MTI smooth lid, smooth bellows, !AIR, !cats, 1-3/4" QTP SS LT's, 2-1/2" TD's with X-pipe, MagnaFlows dumped at axle, custom welded SFC's, MidWest Chassis body mount adjustable T/A, 3400 stall, 3.23 gears (was 2.73). Tuned: 343rwhp/357rwt (before TD's). Best: 12.559 @ 108+, 1.73 60' @ 3500' DA w/MT ET Street DR's.
Carbon footprint? CLOWN SHOE!
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05-22-2010, 01:55 PM #12
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05-22-2010, 05:10 PM #13
- Join Date
- Aug 2005
- Location
- Thornton, CO
- Posts
- 23,773
Red Tint Jewelcoat- 2008 Trailblazer SS
This was WITH cats...
http://home.comcast.net/~mrluos/Raspy.wmv
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05-22-2010, 05:37 PM #14
- Join Date
- Apr 2008
- Location
- Madison, WI
- Posts
- 7,006
1999 Formula WS6 M6-sold- 2001 Silverado Z71
^^was that a dual exhaust with cats or a ypipe exhaust?
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05-22-2010, 05:47 PM #15
Hooker LT's, Texas speed ORYP and Magnaflow catback with tons of rasp I also have alot of valvetrain noise since the H/C But the power is worth it
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wouldn't want to fight them!
Me: That is why no one will remember your name!
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05-22-2010, 05:52 PM #16
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05-22-2010, 10:24 PM #17
OTE=basballny2;2338871]i have LT's no cats and SLP exhaust but replaced the SLP resonator with a magnaflow bullet muffler and no rasp here[/QUOTE]
I'm assuming it had rasp before you changed to the bullet muffler???
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05-22-2010, 10:27 PM #18
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05-22-2010, 10:27 PM #19
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05-22-2010, 10:29 PM #20
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