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Thread: Flowmaster Muffler
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11-05-2007, 02:23 PM #1Member
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Midnight Blue- 1998 Trans Am
Flowmaster Muffler
A buddy of mine has a Camaro with the LS1 engine. He put a flowmaster muffler in place of the stock muffler and now it throws o2 sensor codes. Anyone else have this problem?
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11-05-2007, 05:01 PM #22004 HEAD/CAM CTS-V
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SILVER- 2004 CTS-V
Never heard of that..
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11-05-2007, 06:00 PM #3Junior Member
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Bright Red- 02 Ws6
Me neither. I would think its more of a coincedence (sp). Its probably the 02's or the cats. A auto shop should be able to tell you.
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11-05-2007, 06:32 PM #4Life in the Fast lane
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Met. Sunset Orange- 01 SS
They arent related. What codes is he throwing? Why did he go with a slowmaster?
J2001 SS, Its not the car its the Driver that matters....
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11-05-2007, 08:11 PM #5old timer
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Navy Blue Metallic- 2002 Z28
^^^^
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11-06-2007, 10:01 PM #6Member Since 1998
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- '98,'00-B 93,03,11,14-V
Catback or just muffler. Just muffler nah. If catback maybe lose connection on O2 or overheated the pipe while welding closeby. Only thing I can think of. I say just that the O2 is going bad. Did you install headers with that system? Y-pipe? Exhaust leak up front somewhere or damage from lift etc.... ???? Those are just some things I'd check.... But, most like just a bad O2.
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11-07-2007, 04:17 AM #7Member
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Silver- 2002 WS6 Trans Am
What are the codes (front or rear o2)? There is most likely either a leak, damage to the cat, or a bad sensor.
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