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06-10-2012, 07:34 PM
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#1 | |
     
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Unique cat situation
I have a ls3 with borla atak on it. I also have the turbonetics turbo kit, Ted is going to up the power in my car a bit. I was told to get rid of the cats before he tunes so I ordered JBA offroad pipes without the high flows as I have heard controversial things. Anyway I did this, to loud a raspy I am running the oe cats for the time being. I need to quiet it down but how? I don't feel comfortable running any cats as the turbo is driven after the cats, if they melt or malfunction I am scared I could throw a chunk through the turbine. I am going to gut the OEM cats and try that, to make them act like high flows. If this doesn't work I plan on adding some 18''x4'' resonators. I really hope that does the trick, any ideas would be great. Here is what It sounded like
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06-10-2012, 08:20 PM
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#2 |
 Drives: 2010 2SS/RS LS3 Join Date: Feb 2012
Location: WA
Posts: 36
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You can run a muffler after the turbo's, just make sure they are of a straight through design. In other words you should be able to see right through them. I had the exact same problem with my truck. I ran the STS kit which mounts the turbo in place of the muffler. Ran for years with no mufflers and it was quiet. I started to worry about the cats puking and taking out my turbo, so I removed the cats and retuned. The exhaust got VERY raspy. Sounded like an open pipe Harley. I used a Borla race muffler and raspiness disappeared. With the straight through design you can still hear the turbo too. Magnaflow also makes a nice stainless straight through muffler.
__________________
Night Furry2 cam, C.A.I. intake w/ Race Scoop and Washer Bottle Relocate Kit, Vmax T.B., LT's w/high flow cats, ATI Super Damper (10% UD), MGW STS w/retro ball.
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06-10-2012, 08:39 PM
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06-10-2012, 08:42 PM
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#4 |
      
Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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its a known thing that Atak gets raspy with headers or cat work.
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06-10-2012, 08:47 PM
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 That I didn't know, you have any ideas?
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06-10-2012, 08:53 PM
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Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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06-10-2012, 09:03 PM
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06-10-2012, 11:58 PM
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Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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06-11-2012, 02:09 AM
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#9 |
Drives: 2017 1SS 1LE - Hyper Blue, P85DL Join Date: Jul 2011
Location: East Bay
Posts: 2,189
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S type aka stingers have massive drone with either LT or no cats. Just a heads up.
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06-11-2012, 06:10 AM
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06-11-2012, 08:55 AM
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Drives: Florida Speed & Power Join Date: Jan 2011
Location: Pinellas Park, FL
Posts: 3,185
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06-11-2012, 09:01 AM
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#12 |
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Hitman
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I love my PYPES "Bomb" exhaust and no drone and cost about $300.
__________________
 Build your dream one day at a time . . . I did . . . https://www.facebook.com/tonyrowe1966 *Caution ~ side effects may include soiled underwear if trajectory isn't kept straight... |
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06-11-2012, 09:24 AM
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Chillin Like a Villain
Drives: 2013 2SS Blue Ray Metallic Dusk Ed. Join Date: Apr 2011
Location: Clarksburg,MD
Posts: 551
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06-11-2012, 09:45 PM
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#14 |
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I gutted the cats and it helped a lot vs running just the jba offroad pipes, these would be ideal with basically any setup except for atak
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