Airaid on 2013 BRZ
Have only had the system on for a few weeks so no long term results. Time will tell. But this system in conjunction with the new Invidia Cat Back system really makes the car sound as it should for a naturally aspirated boxer 4 banger. Seat of the pants dyno says it's definitely helped more towards the mid to high range. Overall...very pleased with it. Looks awesome and the $50 mail in rebate makes it a great deal. Went the non oiled filter.