The BLOX Racing FMU is designed for use on fuel injected, forced induction vehicles using the OEM electronic engine management system. As with any forced induction application, additional fuel is required for the engine to operate properly and make maximum power.The BLOX Racing FMU will increase the engine's fuel pressure, as the pressure in the intake manifold increases. BLOX Racing offers universal FMU's with fixed ratios of 4:1, 6:1, 8:1, 10:1 and 12:1.Recalibration kits are also available and sold separately.