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10-19-2022, 08:01 PM
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#1 |
 Drives: 2021 Chevy Camaro ss Join Date: May 2022
Location: Rgv
Posts: 19
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Regular Corsa Extreme vs Corsa Extreme NPP
So I have the corsa npp axle back on my Camaro ss and its awesome, today I heard another Camaro SS with the same axle back just not npp. Is there any difference sound wise when open? Closed obviously I know there is a drastic difference, but npp open and regular corsa extreme to me sounds different. I find the non NPP one to be a little more Crisp sounding and it has that (CORSA TONE). Am I crazy or does anyone else hear this ?
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10-19-2022, 10:24 PM
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#2 |
 
Drives: 2019 Camaro 2SS Join Date: Aug 2020
Location: McCordsville, Indiana
Posts: 622
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Corsa extreme without NPP doesn’t utilize the valves. So there will be no change in sound.
NPP open would sound different as you are basically bypassing the muffler. I guess I’m a little confused with the question.
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2019 Shock 2SS A10. 2650@10psi/LPE HPFP/XDI+30/LT4 LPFP+JMS/Soler 95mm/Rotofab, E65, CSP 2” Headers/GESI GenII Cats. MM Wild/GM SG3 suspension/1LE Brakes, Velgen VF5 Wheels/GY SC3. JRE Tuned.
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10-20-2022, 11:56 AM
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#3 | |
Drives: 2022 Rapid Blue SS Join Date: Oct 2022
Location: Baltimore, MD
Posts: 18
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10-20-2022, 02:10 PM
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#4 | |
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Drives: 2021 Chevy Camaro ss Join Date: May 2022
Location: Rgv
Posts: 19
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10-22-2022, 08:52 AM
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#5 |
 
Drives: 2022 Camaro 2SS 1LE Join Date: Nov 2021
Location: NC
Posts: 412
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At a car show a few weeks back I was able to experience exactly what you are asking and technically it shouldn't make a difference but I did notice a little change in the tone. Most will say its nothing but I pay attention to the little things so there was a difference to me.
Without the valves the growl was a little deeper to me.
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d1sc w/ stage 2 intercooler, Lt4 fueling, JMS BAP, lt2 intake, mamo ptb, kooks 1/78 longtube headers w/ h/f cats, alky meth kit, thpsi port injection
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10-23-2022, 07:30 PM
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#6 |
 
Drives: 2SS 1LE M6, Palisade Calligraphy Join Date: Nov 2021
Location: Minnesota
Posts: 221
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So did Corsa fix the NPP valve related issues? One is spring related and the other is the rattle i believe.
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10-24-2022, 09:31 AM
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#7 | |
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Drives: 2022 Rapid Blue SS Join Date: Oct 2022
Location: Baltimore, MD
Posts: 18
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