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04-17-2014, 12:14 PM
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#1 |
 Drives: 2013 ZL1 Rally Yellow Join Date: May 2009
Location: Knightdale, NC
Posts: 347
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I want my car louder
Not looking for HP gains really but want it a little louder. What are thoughts on high flow cats? Car is stock with rotofab CAI.
Thanks for any ideas. Not really wanting to dish out a grand for headers. Car is fast enough to me as it is. Bryan |
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04-17-2014, 12:25 PM
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#2 |
    
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Try pulling the exhaust fuse first so it is open all the time.
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04-17-2014, 12:32 PM
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#3 |
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Drives: '12 Camaro ZL1, '16 Silverado Z71 Join Date: Mar 2012
Location: Blaine, MN
Posts: 846
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Without headers options are limited. Maybe cutouts, but they would be a lot louder. Or cat delete, but you'll get a code without a tune.
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2012 ZL1: M6, Rotofab CAI, ATI balancer w/8.66 overdrive, PFADT long tube headers w/cats
2016 Silverado LTZ-Z71 Midnight Edition: 6.2L, 8 speed auto, Borla exhaust |
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04-17-2014, 12:40 PM
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#4 |
     
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QTP cutouts
 ...you choose how loud or quiet you want to be at anytime. No cel or warranty worries. Keeps car stock and you can add headers or other exhuast components afterwards.
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04-17-2014, 12:45 PM
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#5 |
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Drives: 2012 M6 ZL1. 2019 Altima.07 FJR1300 Join Date: Nov 2011
Location: MD
Posts: 665
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The car is fast enough and LOUD enough for me. Hell had a neighbor ask me what kind a engine is in there, an airplane engine? I only have the Roto Fab CAI, Big Gulp & W/W Reservoir as add ons with a catch can waiting to be installed....
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04-17-2014, 12:47 PM
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#6 |
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I cut my mufflers off and had magnaflow y pipes put in, and pulled the fuse for the flaps. Car sounds like a dragster. Mods are that, plus ported vmax tb and roto-fab intake
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 2013 Summit White ZL1 |
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04-17-2014, 12:47 PM
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#7 |
Drives: 2013 ZL1, 2016 Denali HD Join Date: Jun 2013
Location: Greensboro Ga.
Posts: 540
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Try rolling your windows down! Just kidding, I would do the fuse pull to start and see if that satifies your needs.....
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LSX 427, Twin Precision Turbo's, 64/66. Nitrous Outlet System. Pro EFI Engine Management Systems. Vengeance Racing Built......
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04-17-2014, 01:33 PM
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#8 |
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Speed Freak
Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013
Location: Ardmore, OK
Posts: 2,637
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I always chuckle when someone says anything is fast enough...... My car is "fast enough" until I get used to the power upgrades and when I feel I can control the car well, I want it faster. I would save for as long as it takes and then put headers on the car. If you think it is fast enough now it will be more "fast enough" after and sound awesome.
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2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq
2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.  |
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04-17-2014, 02:18 PM
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#9 | |
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Drives: ZL1 Convertible Join Date: Aug 2012
Location: Chicago, IL
Posts: 484
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Quote:
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04-17-2014, 02:32 PM
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#10 |
Drives: 2013 ZL1 M6 Join Date: Oct 2013
Location: Nor Cal
Posts: 1,825
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Here are some pics on my approach to that.
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04-17-2014, 03:15 PM
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#11 |
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COTW 12/3/12
Drives: 2012 Ashen Gray ZL1 Join Date: Aug 2011
Location: Glen Carbon, IL
Posts: 3,279
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Most cutouts, even the QTP will be $600-$700 once you install them, so you are not too far off the price of a set of headers depening on which brand you go with. I have both headers and cutouts and the mild to wild switch, and I love the complete control I can have over the sound of the car. From quiet to obnoxious, I can do it all!
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04-17-2014, 03:52 PM
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#12 | |
Drives: 2023 Silverado LTZ, 2022 Camaro 2SS Join Date: Jul 2010
Location: Arkansas
Posts: 322
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Quote:
But that's just my opinion. And what I plan to do on my 2015 ZL1. |
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04-17-2014, 04:04 PM
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#13 | |
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Quote:
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04-17-2014, 04:07 PM
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#14 |
Drives: 2013 1LE Join Date: May 2013
Location: NJ
Posts: 685
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Get a axle back exhaust. A lot to chose from.
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