DeatschWerks&nbsp; (21U-01-1300-4) 1300cc/min Fuel Injector, (Set of 4) E85 compatibility, flow rates and set balancing in-house by DeatschWerks Flow balanced to within 1-2 percent (flow report included) Excellent spray pattern and atomization for optimized idle and tuning 12-month comprehensive warranty Matched set of 4