This blog post is written by Whitney using the notes she's acquired from answering Subaru wiring questions for customers for over seven years.  When it comes to adding new parts to a Subaru, there are a lot of important factors to consider. While the mechanical side is considered "legos," and for the most...

In this blog post, we've curated our best tips and tricks for tackling your Subaru wiring or any automotive wiring.  The most important tip is to find the correct wiring diagrams for your Subaru's model and year. All the wiring information you need for repair or custom projects can be found or figured...

In part 1, we talked about the basics of a fuel pump controller (FPC), why it's essential, and how it works. This part 2 post will discuss common issues and how to diagnose them. It's pretty standard for us to get calls and emails about fuel pump-related issues. From our experience, most of them stem...

SI-Drive or Subaru Intelligent Drive is a button that changes engine computer mapping and the transmission computer mapping if the car is equipped with an automatic transmission. The engine computer will change the throttle response and target boost to maintain fuel efficiency. There are three different settings. Sport - This is the default position...

This post discusses the differences between 3-pin TGVs and 5-pin TGVs. What is a TGV? A TGV or Tumble Valve Generator is a piece of emissions equipment that reduces the air into the engine when only a small amount of air is required. It's located in between the heads and the upper intake manifold...

This blog post discusses what a Fuel Pump Controller is, what it does, and how it works. If you want to diagnose a fuel pump controller issue (P0230), please take a look at part 2 by clicking here.  What is a Fuel Pump Controller? The Fuel Pump Controller is a module...

In this blog post, we review cruise control in your Subaru and the options available when doing an engine swap and wanting to retain or add in cruise control.  How Does Cruise Control Work? There are three types of cruise control depending on your type of Subaru. In general, a cruise control...

In this post, we'll talk about the engine change guidelines for the state of California and the BAR engine change referee process. We'll include the critical information you'll need to know if you are looking into this process when swapping your Subaru. This is not a specific guide for any particular...