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Old 11-18-2010, 04:02 PM   #1
Outlaw77

 
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Headers+hi flo cats+oem cat back system?

I've been looking around on the exhaust sticky and I was wondering if anyone is running 1 7/8 headers w/ hi flow cats with the oem cat back system. With or without the stock mufflers . How does it sound and what are your impressions? I don't want to buy an aftermarket cb system if there are no gains in performance. From what I see the stock system is fine for what I need. I would consider different mufflers, I really like the way flowmasters sound with headers.
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Old 11-18-2010, 04:47 PM   #2
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I will be running 1 7/8" headers and Hi-Flo cats with the factory cat back in the near future. Idle and cruise sounds just a little louder but at WOT it sounds great IMHO. I was told by several shops that this would support a Maggie and that swapping it out w/aftermarket cat back would offer little or no HP gain. Search Youtube for "2010 Camaro headers with stock exhaust" and you should find a few vids.
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Old 11-18-2010, 04:51 PM   #3
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We've done similar setups to what you're looking for Outlaw. Give us a call if you have any questions.

Sincerely,

Rick
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Old 11-18-2010, 05:22 PM   #4
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Quote:
Originally Posted by FEN View Post
I will be running 1 7/8" headers and Hi-Flo cats with the factory cat back in the near future. Idle and cruise sounds just a little louder but at WOT it sounds great IMHO. I was told by several shops that this would support a Maggie and that swapping it out w/aftermarket cat back would offer little or no HP gain. Search Youtube for "2010 Camaro headers with stock exhaust" and you should find a few vids.
ya it does sound good with stock cat back, its just the car sound great but the muffler look very ugly hanging down like that
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Old 11-18-2010, 05:24 PM   #5
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Like mikeSS said, I couldn't stand the look of the mufflers (garbage cans) handing down in the back. UGLY! They had to go.
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Old 11-18-2010, 05:25 PM   #6
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Quote:
Originally Posted by mikeSS View Post
ya it does sound good with stock cat back, its just the car sound great but the muffler look very ugly hanging down like that
Yea, thats the reason why I'm considering different mufflers and just getting an idea of what sounds good. If the stockies weren't so ugly I woudn't care but dam! I hate have too many choices! lol
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Old 11-18-2010, 05:32 PM   #7
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A Few links....
LT's w/factory cat back




LT's w/factory cat back cammed



My factory GFX kit seems to help hide them a bit. The pic below was taken at a very low angle. Standing behind the car they are almost not noticeable.

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Last edited by FEN; 11-18-2010 at 05:55 PM.
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Old 11-18-2010, 06:40 PM   #8
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thanks for the links!
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Old 11-18-2010, 07:31 PM   #9
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I'd get headers that include an X-pipe.
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Old 11-19-2010, 07:23 AM   #10
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I agree that the stock mufflers are nasty looking. As far as horsepower goes, you would gain few ponies with an X-Pipe but not the mufflers. Mufflers are mostly for sound and looks.
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Old 11-19-2010, 11:07 AM   #11
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Check this guy out $850 for full exhaust
http://www.camaro5.com/forums/showthread.php?t=113481
thanks for the link but I need a header system with hi flow cats included. Great price though.
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Old 11-19-2010, 11:23 AM   #12
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thanks for the link but I need a header system with hi flow cats included. Great price though.
Same boat as me. I think they'd sell way better if cats were offered.
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Old 11-19-2010, 01:47 PM   #13
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Kooks headers w/high-flow cats from marylandspeed.
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Old 11-19-2010, 01:49 PM   #14
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My brother runs american racing headers and cats on stock catback. Sounds pretty mean.
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