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05-20-2018, 03:07 PM
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#1 |
 
Drives: 2015 2SS Summit White Join Date: Oct 2017
Location: Mitten State
Posts: 161
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American thunder catback w/ high flow cats?
I currently have jba high flow cats with the NPP and want that classic hollow muscle sound. From what I have read on here and seen in videos, the flow master American thunder is what I'm looking for. However, I can't seem to find a video or info on how quiet/loud it would be mixed with high flow cats. I've heard it with long tubes and it sound amazing. My concern is it will be too quiet and possible a downgrade from my NPP w/high flows volume wise. If anyone could post a video or let me know that would be awesome!
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05-20-2018, 03:58 PM
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#2 |
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Evil Genius of Chevrolet
Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017
Location: New York
Posts: 3,260
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I ve got them on a 3inch cat back. Stock cats. It's got that classic muscle car growl most are looking for. I'm going to be adding a cam kit, long tube and high flow cats this winters project.
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GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.
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05-20-2018, 03:59 PM
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#3 |
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Evil Genius of Chevrolet
Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017
Location: New York
Posts: 3,260
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It's loud at wot.
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GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.
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05-20-2018, 06:02 PM
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#4 | |
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Drives: 2015 2SS Summit White Join Date: Oct 2017
Location: Mitten State
Posts: 161
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Quote:
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05-21-2018, 05:33 AM
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#5 |
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Started#gottalovethatblue
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I can't imagine ever ditching the NPP exhaust, but I believe DRKS1D3 has what you are looking for. He's posted some videos on here if you search for some of his posts. It is indeed loud and sounds good. Believe it or not, when mated with shorty headers it deepened the tone and really set the exhaust off nicely.
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05-21-2018, 08:48 AM
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#6 | |
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Drives: 2015 2SS Summit White Join Date: Oct 2017
Location: Mitten State
Posts: 161
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Quote:
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05-21-2018, 05:53 PM
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#7 | |
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Started#gottalovethatblue
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Quote:
 Glad I could help. PM DRKS1D3 if you have questions about his setup. He’s always up for talking about his sweet ride.
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05-23-2018, 11:15 PM
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#8 |
   
Drives: '15 SS Join Date: Sep 2012
Location: North County
Posts: 1,235
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I got jba hfc with the npp. It sounds very nice. I would keep it
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Follow My Car on INSTAGRAMhttp://www.instagram.com/forb1dd3n_ss
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05-24-2018, 01:15 AM
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#9 | |
 Drives: 5th gen Join Date: Oct 2016
Location: FL
Posts: 81
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The "hollow" sound comes from chambered mufflers devoid of any internal fiberglass packing. Flowmaster 40s (and I suppose the american thunders) or spintech pro streets will have it.
Heres a cammed camaro with spintechs |
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