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Old 08-18-2013, 06:43 PM   #225
Camaro_Mike
 
Drives: 2011 CGM SS LS3
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Are there any HP gains from the muffler delete?
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Old 08-18-2013, 07:38 PM   #226
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Old 08-18-2013, 08:36 PM   #227
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I've had the Magnaflow axle-back muffler delete on my SS (LS3) for a few months. I did the install myself. Pretty simple. Unbolt after the cats, sawzawl at the appropriate lengths, bolt on the straight pipes, and button everything back up. I went with the Magnaflow due to the awesome looking 5" tips. Much more aggressive. Love the decel popping.
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Old 12-14-2013, 10:27 PM   #228
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Just did my 2012 L99 with Doug Thorley muffler deletes. They were 1/2 the price of any others I could find. Had one problem with the install, the flared ends were not wide enough to fit over the cut ends of the stock pipes. I had to take them to a muffler shop to have them flared wider. Sounds great now and I do not notice any drone. The AFM just sounds a little louder now when it kicks in. Here's a link to the video:



After driving some more, the AFM is most noticeable (annoying sounding) at slower speeds, like 20-30MPH.

Last edited by GarySS; 12-20-2013 at 06:58 PM. Reason: adding some info
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Old 07-13-2016, 04:39 PM   #229
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I have a 10' SS M6. Heads, cam, headers, no cats stock diameter with stock h pipe. is there any way to cut the exhaust off before it ever makes it to the rear end of the car?? I was thinking about welding in a couple dynamax bullets or something similar. surely someone has tried to run a shorter setup?
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Old 07-13-2016, 07:59 PM   #230
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It may not add any power but it cuts about 20lbs off the car. And this car needs a diet
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Old 07-14-2016, 02:42 AM   #231
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That's one of my main concerns is the weight. I've got my exhaust out right now while upgrades are being done and can't help but think I could modify the exhaust and keep it under the car. I've looked and looked for pics of one and have yet to see one that has been done. Mine is not a dd so I'm not worried about cabin noise and so on.
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