The what, the why and the how much...

AVSC is a well-respected automotive business specializing in modifying Subaru engine wiring harnesses for those wanting more power and reliability in their desired vehicles, not to mention it is more friendly to the environment.

Our team builds each harness as if it were going into their own vehicle. They take the time to test each completed harness before it is shipped out the door.  With the knowledge he has gained over the years from experience and extensive research, Jeff looks forward to guiding you through your own Subaru engine conversion with one of our modified harnesses! 

Not up to taking on a conversion yourself? No problem - give Jeff a call or email us for an estimate on a full conversion at our shop!

We are proud to have provided increased reliability and power to customers in 46 states, Canada, Puerto Rico, Germany and The Netherlands! 

At this time, we are offering modification of the following (non-canbus) 1990-2007 harnesses:

     • EJ22

     • EJ25
    • EJ20T
    • EJ25T

     • EG33

     • EZ30D

 While we may not be the least expensive option out there for wiring harnesses, it’s important to know why!  Our speedy response time and willingness to guide you through your conversion process is what makes our customer service unparalleled and puts your mind at ease.  The harness you will receive is the most complete harness on the market - meaning your installation time is drastically reduced. What you will find included in our services that you don’t find in the “cheaper” options is this:

• AVSC interface boards to eliminate 7 nuisance codes, built-in speed sensor, a 0-50 adjustable resistor to reposition the coolant gauge needle, and a neutral switch function that is switched
• Complete split-loom and wrapping of entire harness with quality tape
• Modification of your alternator/starter harness which is built into the main harness
• Vanagon harness has coolant level wiring built in
• Vanagon harness has van plugs installed
• Complete testing of your harness on a motor before shipment

 **We will no longer be accepting harnesses that have been previously modified by someone else, main sections that have been cut or multiple missing plugs

 without contacting first**

** 10% discount for return customers**

• EJ22 Normally Aspirated OBD1 1990 to 1994   

              $899 + $50 for Vanagon plugs installed               

             -We will need the intake manifold (engine) harness to relocate the main 

              plugs to the driver's side of the van. (1990-1994 only)

•  EJ22 & EJ25 Normally Aspirated OBD2 1995 to 2004   

              $949 + $50 for Vanagon plugs installed               

NON-CANBUS DBW

• Impreza EJ25 normally aspirated 2005-2007
• Forester EJ25 normally aspirated 2005-2008

              $999 + $50 for Vanagon plugs installed               

             + $50 for drive by wire pedal to be lengthened             

              - We will need to know the length or can help with figuring out a length  

• 1992-1997 SVX 3.3L

              $949 + $50 for Vanagon plugs installed 

• 2001-2004 Legacy and Outback EZ30D 3.0L

              $999 + $50 for Vanagon plugs installed          

EJ20 AND EJ25 TURBO 

•  Impreza WRX 2.0L Turbo: 2002-2005 
•  Impreza WRX STI 2.5L Turbo: 2004 
•  Forester 2.5L Turbo: 2004 
•  Baja 2.5L Turbo: 2004-2006 

              $1099 + $50 for Vanagon plugs installed                

              + $50 for drive by wire pedal to be lengthened              

              - We will need to know the length or can help with figuring out a length

CANBUS DBW with ECM (we provide ECM)

•  Impreza 2.5L normally aspirated 2008-2010 
•  Forester 2.5L normally aspirated 2009-2010 
•  Legacy/Outback 2.5L normally aspirated  

              $1199 + $50 for Vanagon plugs installed               

              + $50 for drive by wire pedal to be lengthened

              - We will need to know the length or can help with figuring out a length

4EAT Automatic Subaru Transmission and Engine Harness Modification

•  1999-2007 NON-CANBUS with alternator to starter to black box wiring built into the main harness and tested on a vehicle

               $1350 + $50 for Vanagon plugs installed

**For ALL harnesses we will need the ECM, fuel pump controller, main underdash bulkhead harness and the alternator harness, which can be cut under the fuse box. 

**For Vanagon installs we need to know whose coolant reservoir, coolant level sensor and reverse manifold you are using.