Part #: 1700.48.11.WRX.4. These Injector Dynamics fuel injectors are a top - notch choice for Subaru owners. They fit various models like WRX from 2002 - 2014, STI from 2007 - 2021, Forester XT from 2007 - 2013, Legacy GT from 2007 - 2012, and Outback from 2007 - 2009. Injector Dynamics offers the best fuel injectors globally, setting the standard for tuners and car builders. These injectors are precisely matched in sets according to their dynamic flow across the pulsewidth range, ensuring excellent cylinder - to - cylinder consistency, even at low pulsewidths. You'll get dead - time compensation values for the entire pressure and voltage range of the injectors. This ensures proper ECU compensation and consistent air - fuel ratios as atmospheric or voltage conditions change. The kit includes clips and pins for the Injector Dynamics Injectors. You can either re - pin your factory harness or buy the optional plug - and - play adapters.

Using these Injector Dynamics fuel injectors is straightforward. First, make sure your Subaru model is one of the compatible ones listed (WRX 2002 - 2014, STI 2007 - 2021, etc.). If you're re - pinning your factory harness, take your time to do it correctly to avoid any electrical issues. If you've bought the optional plug - and - play adapters, simply connect them. When it comes to maintenance, it's a good idea to regularly check the clips and pins for any signs of wear or damage. Also, keep an eye on the air - fuel ratios. If you notice any significant changes, it might be a sign that the injectors need to be inspected. Always follow the dead - time compensation values provided to ensure the injectors work at their best under different pressure and voltage conditions.