Power infusion whisper macroBig Power. Small Package. The X4 Power Flash arrives Pre-Loaded with DYNO Proven tune files that INCREASE HORSEPOWER and TORQUE. Custom Tunes. Lots of them. Stores up to 10 custom tune files created by your local SCT Custom Tuning Dealer. [rev_slider alias=”livewire-slider”] %8. Add to cart. 6 pin laptop battery pinoutX4 tuner with powerful 5-Star Custom tunes (Up To 20HP & 30 lb-ft.) Application and octane-based custom tuning; Comes with up to five 5-Star Custom tunes and SCT Canned Tunes; Can compensate for powerful performance mods; User-adjustable settings, including tire size; Stores stock tune for troubleshooting; Backed by optional Stage 3 Powertrain ...