CAMARO6 - View Single Post - 4CYL mode exhaust valve

Ant_ss · 04-06-2016, 09:54 PM

I've been curious as to how non-npp 6th gens are whisper quiet until you accelerate hard.
i had no idea my non NPP 1lt rs a8 had such a good exhaust note until i let a friend get behind the wheel and told him to floor it so i could hear it for myself.
i believe I read somewhere that theres an exhaust flap that opens while in 4cyl mode, does this flap also open under hard accel?

04-06-2016, 09:54 PM	#1
Ant_ss Drives: 14 1SS RS Black (rental) Join Date: Nov 2014 Location: Los Angeles, CA Posts: 87	4CYL mode exhaust valve - non NPP eqp. cars I've been curious as to how non-npp 6th gens are whisper quiet until you accelerate hard. i had no idea my non NPP 1lt rs a8 had such a good exhaust note until i let a friend get behind the wheel and told him to floor it so i could hear it for myself. i believe I read somewhere that theres an exhaust flap that opens while in 4cyl mode, does this flap also open under hard accel?