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Indydriver · 02-15-2014, 04:47 PM

I've got a 2SS/RS vert on order and based on comments I've seen here, I checked the NPP box. I notice on the new Corvette, GM claims a 5 HP increase but not on the Camaro. Is it just a sound enhancement? Will front end breathing improvements such as a CAI and TB porting give a power boost with the NPP or do you really have to go the full aftermarket headers and back approach. I do not want the full time noise of headers--I prefer stealth.

I'd love to hear from those of you with NPP about HP mods you've made. Did you keep or ditch the factory upgrade exhaust you paid for in favor of a better breathing exhaust?

02-15-2014, 04:47 PM	#1
Indydriver Drives: '14 2SS/RS Vert 6M/KTU/NPP/DTA/ARH Join Date: Jan 2014 Location: Indianapolis Posts: 2,826	NPP-just noise, no additional power? I've got a 2SS/RS vert on order and based on comments I've seen here, I checked the NPP box. I notice on the new Corvette, GM claims a 5 HP increase but not on the Camaro. Is it just a sound enhancement? Will front end breathing improvements such as a CAI and TB porting give a power boost with the NPP or do you really have to go the full aftermarket headers and back approach. I do not want the full time noise of headers--I prefer stealth. I'd love to hear from those of you with NPP about HP mods you've made. Did you keep or ditch the factory upgrade exhaust you paid for in favor of a better breathing exhaust?