xHP 8 Speed Transmission Tune (F Series)xHP 8 Speed Transmission Tune Installed at Evolve STAGE 1 Removes the transmission's internal torque limiters, which opens up the way for properly done engine tunes. Engine tunes no longer need to fake torque calculations, which greatly improves overall driveability and longevity! Also, you get a neat Gear Display in your dash D1.. D8. STAGE 2 Build on Stage 1 files, but are already a complete remap of your transmission! Faster shifts, stronger blips