For cars such as the Aurion, I don't believe that using an aftermarket panel filter replacement such as the K&N will make any difference. I would even go as far as saying the Typhoon intake probably doesn't make a measurable difference. The main advantage you are getting here though is the benefit of reusability. With the OEM disposable filters costing around $30 each, a reusable panel filter can pay for itself in just a few filter change cycles (60,000 - 90,000km) depending your driving conditions. The only real restriction in these cars is the intake snorkel component itself from the air filter box to the opening above the radiator. The snorkel tapers down from a relatively large opening to an opening about half the size. I personally don't think this is an issue on the N/A 2GR-FE however on the TRD, it does make a noticeable difference which you can hear at higher revs with WOT. But even then we are taking fractions of a second when the car is raced in controlled conditions.