Removed both mufflers from my 2011 aurion to see what it sounded like, & because I've gotten bored with the car.
Suprisingly, these engines have a nice burbly note, & at full throttle a bit like a sportscar along with a hectic double pop between gears in manual mode. Volume isn't toooooo loud, I'd say 6.8/10
Ive read the this mod won't do anything other than make noise.... Rubbish. There is a clear increase in acceleration at full throttle, & my fuel consumption went down even with harder driving. Wonderful.
Now for the bad stuff...... There's a massive resonant drone @2200-2300rpms mainly when the transmission is in too high of a gear for the speed, which with damn autos, is most of the time. The drone is pretty deafening & it has to go so I won't be getting straight pipe made up to replace the factory setup. Below is a Pic how it looks now
I've got 2 oval resonators ready to fit on Friday to combat this drone. The idiots sent me 2 different brands, but the specs are the same. 16" x 5" x 3" and will be fitted with 2" pipe along with a pair of decent sized tips.
I'm hoping the volume won't change too much, but the drone dies. Will update how I go. If the issue is still there, then will do a pair of J-pipes which I've worked out to be 29.4" long for this engine at those rpms