I took a video clip with my phone laying on rear bumper above exhaust outlet.

I don't know how to upload it on here.

30 seconds of video with start up, idle, 2,200 rpm, idle, 2,000 rpm, idle, shutoff.

It's louder than stock with turbo whistle at idle and hardly any noticeable difference inside with the windows up.

PM me your cell number and I can text it to you.

I am pleased with the sound.