Originally Posted by whitebeast

Here is another exhaust sound clip.
https://www.youtube.com/watch?v=zFljCVKaQQ0

Hope it help you!!!!!

Originally Posted by steveis350

I'm having the Vibrant 1141 2.5" Ultra Quiet resonator installed on my IS350AWD today actually. I have the F-Sport axle back exhaust and F-sport intake as well. I'll come back here in about a week or so (after the break-in) to let you know how that sounds if you're still interested to know. I wanted the exact same thing as you did and read a lot of good things about this resonator. If after this, I still don't feel it's at the tone and sound level I like, I am replacing the stock secondary cats with two Flowmaster 2230125 223 Series 2.5" cats.