Xc90 V8 3 Inch Exhaust Tones

Hello everyone,

I am interested in your opinion about the sound I got out of 3 inch cat-back system.

There are no mufflers - it's straight 3 inch tube with extra helmholtz resonators attached to the sides of the pipe (my own design).

Inside the cabin there is no drone while driving on a highway. You hear only the high tone sounds and when you accelerate hard you hear the exhaust but also the engine which is really nice.

The microphones I used are not great but you can hear the nice tones ...

http://youtu.be/ZIbVclt3Iy8

http://youtu.be/UVrm2xcXEnk

http://youtu.be/kzcsYpY-rh8

Thanks,

Matt