Tuning DSPORT Magazine’s 2019 WRX – Part 3

In this iteration of my work on the DSPORT Subaru WRX, the performance benefit of ethanol based fuel is shown, with a 100 horsepower gain on a basic bolt on setup after custom tuning. Key benefits of ethanol fuel are discussed, as well as vehicle preparation, and finally dyno charts show the massive gains.

Test & Tune: 2019 Subaru WRX | 91-Octane vs E85