Can tune engine fuel delivery in specific ranges, check rpm, read fuel injector pulse width and duty cycle, and add or remove fuel in low- or mid-range rpm It will work with stock or modified engines to tune fuel delivery to provide peak performance in every gear PowrPro Black analyzes, tunes and adjusts your air/ fuel ratio for peak performance instantaneously The new PowrPro Black tuner is a true plug-in-and-ride EFI management system Can fine-tune the non-acceleration air/ fuel curves using the Bluetooth« app Works with stock or modified engines, air cleaners and exhaust systems Tunes acceleration fuel delivery in every gear for peak performance. FI2000 O2 STD 07-13 XL