Description The ID1300xds (formerly ID1300x) has proven itself to be one of the most versatile injectors on the market and a perfect match for the Subaru 08-14 WRX & 08 STi using the EJ25 engine. With the ability to operate from 20-140psi fuel pressure supporting over 160HP per injector the ID1300x are ideal for any 450-650hp STi or WRX running pump gas or E85. With over 1300cc of flow the ID1300x still delivers a smooth idle with great drive-ability on both pump gas & E85. For those planning to run on ethanol, e85 or flex fuel the ID1300 injectors work with any gasoline or alcohol based fuel thanks to full stainless steel internals.