A few weeks ago I flashed my 2017 BRZ w/ the OFT Stage 1 v.4 tune, there is a bit of reduction in the torque dip and more aggressive timing above 3-3.5k rpm iirc. Throttle response is a little better and the car is a little easier to drive smoothly for daily use. If you don't plan on getting catted/uncatted headers in the future (or E85) I'm not sure if its worth it, unless you want the additional features like the quiet start feature (nice if you have a louder exhaust and live in residential area), launch control & flat foot shifting which could be nice if that's useful to you.
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" Why must everything that is broken be fixed?"
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