hello Guys
all Camaro (this one is AT8 with NPP) when start up at cold goes up a bit on RPM and makes a good loud engine noise.
if you add a Borla Exhaust it becomes a real loud exhaust and neighbours are not happy
so, what's the way to lower the noise on start up and make it quiete?
if I think on genV Escalade you barely notice when you start the engine
thank you!
best regards