The most versatile High Performance Fuel Pump (pump only) on the market. The FA Series allows the customer to tweak the fuel pressure to the engine on the ?Fly?, delivering unmatched versatility. The Boost Compensation Port also gives the pump added/more consistent fuel pressure based on boost referencing from the turbo keeping fuel pressure in line with the needs of the diesel engine. Flow rates from 95 ? 260gph and fuel pressure from 0 ? 75psi!