Subaru Rates these injectors at 525cc, other companies have rated them at 510cc, 520cc, 550cc, or 565cc, but when flow tested they consistently flow 565cc so don't get confused; these are what you want. These injectors use the same clip as factory injectors for true plug-and-play installation. These are genuine STi, so you will have a clean idle and low speed response. Because the EJ20 engine works better with a rich air/fuel ratio; these injectors are a must for upping the boost or switching to a smaller bolt-on turbo (IHI VF22 or VF34). These are high-impedance injectors; sold in a set of four.
There is often a backorder on these, so if you are in a hurry, please contact before buying.
