Options for making stock NPP Louder?

Camden45 · 08-16-2022, 12:00 PM

Might be pre-mature as the car is still in the break-in period and I'm not exceeding 4k RPM's, but is it me or is the car really quiet down low? Fuse has already been pulled.

I really don't like the fact that you can not simply bolt a cat-back onto these cars.

I don't want to do headers and want to keep all the cats. Am I out of luck or will an Axle-back help me out here?

SATINSTEEL1LE · 08-16-2022, 12:08 PM

Axleback will replace the stock NPP exhaust. You can get an aftermarket npp system like corsa or borla but they are big $$ for nothing but sound. You need to delete the cats or just get long tubes.

WhiteMale · 08-16-2022, 12:10 PM

For making what you already have louder? No, nothing to do there.

Cat backs do indeed bolt up not sure where you go that...?

NYblack1le · 08-16-2022, 02:10 PM

Quote:

Originally Posted by Camden45

Might be pre-mature as the car is still in the break-in period and I'm not exceeding 4k RPM's, but is it me or is the car really quiet down low? Fuse has already been pulled.

I really don't like the fact that you can not simply bolt a cat-back onto these cars.

I don't want to do headers and want to keep all the cats. Am I out of luck or will an Axle-back help me out here?

It’s louder then you think. Car has a lot of sound deadening. Do a rear seat delete and you’ll hear the exhaust a lot more in the cabin.

grampa_ss · 08-16-2022, 02:15 PM

I pulled the fuse too. Still wasn’t loud enough. So I bought MBRP 3” axle back. Sounds awesome with no drone. Black tips are a plus. I just happen to be selling them. Hit me up if you’re interested.

Camden45 · 08-16-2022, 02:29 PM

Quote:

Originally Posted by NYblack1le

It’s louder then you think. Car has a lot of sound deadening. Do a rear seat delete and you’ll hear the exhaust a lot more in the cabin.

Can't do a rear seat delete, my kid won't have anywhere to sit!

Camden45 · 08-16-2022, 02:30 PM

Quote:

Originally Posted by WhiteMale

For making what you already have louder? No, nothing to do there.

Cat backs do indeed bolt up not sure where you go that...?

Not a simple bolt on, exhaust needs to be cut after the secondary cats

Smokin19 · 08-16-2022, 02:52 PM

Quote:

Originally Posted by NYblack1le

It’s louder then you think. Car has a lot of sound deadening. Do a rear seat delete and you’ll hear the exhaust a lot more in the cabin.

These cars have ZERO sound deadening. This is what real sound deadening looks like.

08-16-2022, 12:00 PM	#1
Camden45 Drives: Chevrolet Chevy Join Date: May 2022 Location: California Posts: 322	Options for making stock NPP Louder? Might be pre-mature as the car is still in the break-in period and I'm not exceeding 4k RPM's, but is it me or is the car really quiet down low? Fuse has already been pulled. I really don't like the fact that you can not simply bolt a cat-back onto these cars. I don't want to do headers and want to keep all the cats. Am I out of luck or will an Axle-back help me out here?

08-16-2022, 02:15 PM	#5
grampa_ss Drives: 2016 Camaro 2SS Join Date: Apr 2017 Location: Stansbury Park, Utah Posts: 1,092	I pulled the fuse too. Still wasn’t loud enough. So I bought MBRP 3” axle back. Sounds awesome with no drone. Black tips are a plus. I just happen to be selling them. Hit me up if you’re interested. __________________ 2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000 New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth.

08-16-2022, 12:08 PM	#2
SATINSTEEL1LE Account Suspended Drives: 21 ZL1 Join Date: Feb 2022 Location: South East Posts: 662	Axleback will replace the stock NPP exhaust. You can get an aftermarket npp system like corsa or borla but they are big $$ for nothing but sound. You need to delete the cats or just get long tubes.

08-16-2022, 12:10 PM	#3
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,992	For making what you already have louder? No, nothing to do there. Cat backs do indeed bolt up not sure where you go that...?

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