Quote:
Originally Posted by transpat
I see someone mention the valves close during V4 mode. Can you stop V4 mode from happening? Put drive mode to sport and still hear them shut on light throttle.
Thanks
|
On my manual trans C7, I can prevent V4 mode by simply not using it in Eco mode therefore the pre-muffler exhaust valves are open. When they are closed (in Eco mode in my car), exhaust gasses still pass through since there is a small orifice opening in the valve, kinda like a diaphragm.