Here is idle with windows open and then closed
Measuring sound at the tailpipe tips is 94 dbA
where in drivers area sound level is only at 80 dbA with windows open and 77 dbA with windows closed



Here is stop/go city driving that includes both windows open, closed, drivers or passenger window open or closed, radio on and verbal talk
Weather 55 degrees and cloudy



Launch from a dead stop :



Team ZR-1
True Custom Performance Tuning
Teamzr1.com