[What’s “Fifty” mean?]

I have a 2017 SS (Fifty) but it does not have NPP Exhaust. I have headers, CAI and tune coming within the next few months, but I'd like a bit more sound now, without removing the mufflers. I've seen many videos and posts concerning the removal of the secondary cats, but all the cars also had NPP Exhaust. My old 2015 SS didn't have NPP Either and a simple resonator removal fixed my "quiet car" issue.

Sooo, will removing the secondary cats on a car that does not have NPP, make the car louder or increase the decel pops and crackles?

Thanks for the Help! - Formerly ReDDevilSS

[caSStro18]

Originally Posted by What’s “Fifty” mean?

I have a 2017 SS (Fifty) but it does not have NPP Exhaust. I have headers, CAI and tune coming within the next few months, but I'd like a bit more sound now, without removing the mufflers. I've seen many videos and posts concerning the removal of the secondary cats, but all the cars also had NPP Exhaust. My old 2015 SS didn't have NPP Either and a simple resonator removal fixed my "quiet car" issue.

Sooo, will removing the secondary cats on a car that does not have NPP, make the car louder or increase the decel pops and crackles?

Thanks for the Help! - Formerly ReDDevilSS

Not sure what mufflers you have, but I installed AWE Touring axleback mufflers, kept the secondary cats in place, and I get lots of pops and crackles on deceleration. My car does not have NPP exhaust. I would imagine deleting the cats will increase the volume, but I’m not sure how it affects the deceleration pops and crackles.

[ssmofo]

The Borla, S type axle back is amazing, I have been singing it's praises since I bought it, it breaks an over time and sounds amazing, great build quality on top of an easy install. You won't regret it and your neighbors will love you.

[ST1LE]

Originally Posted by What’s “Fifty” mean?

I have a 2017 SS (Fifty) but it does not have NPP Exhaust. I have headers, CAI and tune coming within the next few months, but I'd like a bit more sound now, without removing the mufflers. I've seen many videos and posts concerning the removal of the secondary cats, but all the cars also had NPP Exhaust. My old 2015 SS didn't have NPP Either and a simple resonator removal fixed my "quiet car" issue.

Sooo, will removing the secondary cats on a car that does not have NPP, make the car louder or increase the decel pops and crackles?

Thanks for the Help! - Formerly ReDDevilSS

Yup. Removing the cats from any car will make it louder, secondary cats included, regardless of what exhaust you have. Decel pops, probably increase too but cant say for sure.