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Why Doesn’t My 1999-2007 Subaru Rev Past 4,000 RPM?

In this blog post, we go over why your car is no longer revving properly after a new transmission swap into a Subaru.   You finished your Subaru transmission swap; everything is bolted together, and the car starts and drives. There’s just one problem: It won’t rev past roughly 4,000 RPM...

Subaru Vehicle Speed Sensors (VSS) Part 3 - Extension Harness Differences for 3-Wire VSS Types

In this blog post we talk about the jumper harness on your Subaru transmission’s Vehicle Speed Sensor (VSS). This applies to 99-07 Subaru models with a 3-wire VSS with a manual transmission.  Click here to learn more about VSS Sensor Types of all years   Types of VSS Connections All of...

Swapping your Subaru Automatic Transmission (Automatics Part 2)

This is part 2 about Subaru automatic transmissions. If you haven't read part 1, please start by clicking here. The following post is about what happens with swapping the automatic transmissions as a replacement and/or with an engine swap.  Cliff Notes If your car came with an automatic transmission and you...

This Dictates That - iWire Rules Of Thumb

In this blog post we break down our key rules to make sure your project will be a "great success!" For the following, with very few exceptions, you must follow the rule and not mix and match or else you'll run into trouble.   Heads dictate ECU Type When picking...

Subaru Vehicle Speed Sensor (VSS) Part 2

Updating your Transmission? You May Need our iVSS (Vehicle Speed Sensor Replicator) or our iDCCD (Driver Controlled Center Differential for 6 Speed Transmission).  Want to know the basics like what VSS means and the different VSS types for manual transmissions? Check out our Part 1 Blog Post. If you are converting from an...

Subaru Vehicle Speed Sensor (VSS) Types Part 1

This will be a 2-part post, first is just the basics of VSS and the VSS types by year for manual transmissions . Part 2 will have more details about conversions, and that can be found here.   Prefer not to read - check out our video about Vehicle Speed Sensors...