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08-07-2018, 05:39 PM
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#1 |
 Drives: 2017 ZL1 Join Date: Jan 2018
Location: California
Posts: 165
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Anyone added extra mufflers after their longtube header install?
I'm considering adding 2 resonators where the stock cats were, and also a Magnaflow "2 into 2" dual inlet/ outlet muffler in the rear, just before the rear differential. I had done this with my SS sedan and it's the only way in hell to make things civil when using longtubes, even with the stock NPP system.
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08-08-2018, 11:50 AM
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#2 |
   
Drives: 2023 2SS Convertible Join Date: May 2009
Location: Metro Detroit
Posts: 1,061
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I would listen to it first - these cars have a much better stock muffler than the 5th gens.
-Geoff
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'12 2SS RS Convertible - Traded in.
'16 2SS Convertible - White on white, mag-ride, NPP, nav. Sold! '23 2SS Convertible -Same as above except orange. |
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08-08-2018, 12:55 PM
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#3 |
 
Drives: Garnet Red 2018 SS 1LE "Deadpool" Join Date: May 2018
Location: South Florida
Posts: 86
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I kept my stock mufflers when I did my off-road headers and midpipe. NPP compatible mufflers are retarded expensive, and it just wasn't worth it to me. When I need it quiet, I drive it in Stealth mode and it's right between the touring and track mode sound...not to quiet, but not obnoxiously loud either.
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08-11-2018, 12:07 PM
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#4 |
        
Drives: 2017 2SS M6 Join Date: Jun 2013
Location: WNY
Posts: 7,070
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your not going to have room. i asked my muffler shop about putting resonaters in with my headers and cat back. no room.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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08-12-2018, 06:08 AM
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#5 |
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Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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Borla lists a resonator section that is designed to be used with their X-pipe. It would go in place of some of the piping in other words. But I've seen no reviews of how well it works.
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08-12-2018, 02:27 PM
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#6 | |
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@maplefed
Drives: 16' MBM 2SS, Join Date: Sep 2016
Location: So-Cal
Posts: 116
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Quote:
The middle resonator combined with the S Type is what composes their touring system.
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@maplefed
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08-12-2018, 04:04 PM
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#7 | |
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Drives: 2017 ZL1 Join Date: Jan 2018
Location: California
Posts: 165
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Quote:
 And two resonators will go in place of the downstream catalytic converters: 
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