Test Driving the New Tune on the WRX STI.
Although many people say that you need to build Subaru's up a lot to make power, we found that by doing simple bolt-on modifications, E85, and a tune, you can get some pretty serious results out of these little boxer engines. Check it out for yourself in the video below!
View the full STI mod list HERE: https://throtl.com/blogs/current-winners/2018-subaru-wrx-sti
Enter to win the WRX STI HERE: https://throtl.com/pages/sweepstakes-collection