Anytime you plan to supercharge or turbo a K series engine, you are going to need to jump to a larger fuel injector. These injectors can handle your power goals with E85 up to around 550-600whp and allow for excellent tip in transient response for OEM-like drivability without special trickery with tuning. These are regarded as the largest injector you can run on 93 octane before you sacrifice drive quality The ID1300XDS is an all new injector, designed in partnership with Bosch Motorsport. This collaboration has given us the ability to design a high flow injector with characteristics specific to the needs of the motorsport tuner. The ID1300XDS was designed with alternative fuels in mind, and is the only performance injector available with all stainless internals. It is compatible with all known fuels, and will stand up to the corrosive nature of alcohol better than any injector on the market. While the ID1300XDS was designed with an eye towards ethanol-fueled engines, we have accounted for the occasional need to convert back to gasoline. The ID1300XDS has a minimum fuel mass compatible with gasoline use, and will provide exceptional idle and cruise behavior under these conditions. In addition to its multi-fuel capabilities, the compact body of the ID1300XDS allows fitment in 200+ applications, making it the most versatile injector in our lineup. Notes: These injectors are designed for K series applications. 14mm (grey) adapter top. Set of 4 These injectors fit our KPower intake manifold in both the RBB and PRB configurations, contact us if you have an R40 style intake manifold EV6/EV14 connector If you have a wiring harness on order with us and would like to use these injectors please make sure to let us know, so that we can include the correct injector clip style/sub harness. Technical specs: Nominal flow rate: 1335cc/min @ 3.0 bar (43.5 psi) using iso octane at 52 degrees C (125 degrees F) Maximum differential fuel pressure: 7.0 bar (101.5 psi) Fuel compatibility: compatible with all known fuels - (designed specifically for alternative fuels) Electrical connector: USCAR