I purchased my BRZ about a year ago, and instantly bought an exhaust/intake. It sounded great, but there was always that feeing of being a little too slow - until I bought the OFT. I’ve been running stage 1 for only 2 days now, and I have instantly noticed the difference in throttle response, torque, power, and all around, everything. This made driving the BRZ as fun as the first day I brought her home.