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01-26-2021, 11:49 AM
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#1 |
 Drives: 2017 Camaro 1lt RS V6 Join Date: Jan 2021
Location: Highland, Illinois
Posts: 2
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Secondary Cats Question
Hey guys so I have a 2017 V6 with the NPP exhaust option. I love the way it sounds but I've seen people talking about doing a secondary cat delete. I was wondering if anyone here has a secondary cat delete with the stock NPP and how it sounds. I know it shouldn't be a huge difference but just wondering what it does. Also, I think it keeps the option to quiet it down which I would like to keep. Is that true?
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01-26-2021, 11:59 AM
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#2 |
     
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
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From what I've heard it will be more raspy, but nothing crazy. Just for reference I have a Flowmaster axle back on my 2018 V6, and even with the rest of the exhaust stock, I personally wouldn't want it any more raw or raspy than it already is. Obviously the V6 has that inheritantly higher pitched type sound as is, so it can get raspy rather quickly with minimal exhaust mods. Obviously it's all personal preference
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07-03-2021, 09:23 PM
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#3 |
 
Drives: '17 Hyper Blue RS, NPP, 6MT Join Date: May 2017
Location: Toronto
Posts: 98
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I have it and it is much louder, more burbly at 1.5-2k rpms and you hear more decel pops and bangs and it’s louder.
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07-04-2021, 09:00 AM
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#4 |
 Drives: 2017 RS CAMARO V6 Join Date: Jun 2018
Location: MEMPHIS
Posts: 135
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I killed my secondary cats and they got me a little better performance because I'm using Jones Turbine mufflers, resonators, and exhaust valve deletes
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07-19-2021, 09:36 AM
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#5 | |
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Drives: 2017 Camaro 1lt RS V6 Join Date: Jan 2021
Location: Highland, Illinois
Posts: 2
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Quote:
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08-10-2021, 10:40 PM
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#6 | |
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Drives: Camaro V6 2017 Join Date: Jan 2020
Location: TX
Posts: 73
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Quote:
Happy with results overall though. louder and more raw overall. Much louder in high rpms. Bit raspy around 3-3.5k rpms, I think. Sometimes I do wish it was a bit louder. But I feel a little bit louder will be so much more expensive, if you want to keep NPP, because you'd have to get an aftermarket system and I think only Borla makes them for V6. |
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