Quote:
Originally Posted by christianchevell
Blue ray your lost...LOL: there are never four pipes open except when its switching temporarily. Dual mode is on the Camaro straight through at idle then on at about 2500 -3500 rpm I forget or basically when you get on it if its in stock mode. A switch allows you to keep one set of pipes open or closed. And that stock trash can out back is what I had on the L99 and I know the suitcase resonator did not help..LOL but it was a vert and therefore more sound makes its way in....And the Camaro exhaust is very similar to the corvette exhaust when it comes to the NPP exception at start up on some years. That annoying resonance I suggest is you lugging the engine..... LOL as In one particular rpm I have low rattle from the harmonics and it goes away fast and most likely its from lugging low and the vibration rattling on the system.
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Interesting.
I thought the valve on the Camaro NPP only opens/closes the straight through while the muffled pipe is always open.