Quick Links

MS3Pro Plug and Play SW0205 for 2002-2005 Subaru WRX


In stock

SKU: MSPNPPro-SW0205 Category: Brand:


MegaSquirtPNP Pro – Plug-N-Play Standalone Engine Management System

for 2002-2005 USDM Subaru Impreza WRX with manual transmission
Does not fit STi models – these used different electronics. This is for the base WRX.

MS3-Pro based MSPNP; Easy to Use and Install!    

MegaSquirtPNP Pro Model #SW0205 Features:

  • Fully Plug and Play Installation – No wiring required for basic functionality
    •  Average install time is under 1 hour!
  • Base map is pre-loaded to help your engine start on the first turn of the key
  • Real time tuning and data logging with a laptop connection
  • 8 GB internal data logging with built in SD card
  • Supports most aftermarket wideband sensors

Fully Tunable Engine Control!

  • 16×16 Fuel Tables allow high resolution tuning
  • 16×16 Ignition Tables
  • Multiple Acceleration enrichment strategies
  • Closed Loop Idle Speed Control
  • Air Conditioner Control
  • 4 sequential fuel injector channels with individual trim tables
  • Onboard peak and hold drivers support both high and low impedance injectors – No external ballast resistor is needed!
  • Allows removal of stock mass air flow sensor
  • Closed loop boost control – includes boost by gear or ground speed

Advanced Feature Set (Included!)

  • 12×12 Air Fuel Ratio Target Tables for use with wide band O2 sensor for precise tuning and table trim.
  • AVCS (Variable valve timing) support for engine swaps (uses extra wires on the expansion connector)
  • Multiple traction control strategies
  • Built-in 3-step rev limiter / launch control with flat shift and burnout rev limiter
  • Real time barometric correction
  • Internal 4-bar MAP sensor reads up to 44PSI of boost
  • Overboost protection
  • Rally style anti lag
  • Water injection control – on/off or variable
  • Knock sensor input with adjustable sensitivity, crank angle windowing, and more
  • Table switching input. Change fuel and spark maps on the fly for different fuels, nitrous activation, etc.
    Input for flex fuel sensor – switch between E85 and gasoline on the fly!
  • CANBus connector allows interconnection of other MegaSquirt-compatible devices for additional functions (EGT Input, Additional Sensors…..the possibilities are limitless!

What you get in the box:

  • MegaSquirtPNP-Pro SW0205 ECU
  • MSPNP RS232 serial tuning cable, 6′ (USB adapter sold separately, if needed)
  • Tuning Software and Documentation on USB memory stick
  • 6′ Vacuum Hose for MAP Signal and ‘T’ fitting
  • Four Screws for ECU mounting
  • Registered version of TunerStudio and MegaLog viewer included

Customers' review

5 stars 0 0 %
4 stars 0 0 %
3 stars 0 0 %
2 stars 0 0 %
1 star 0 0 %


There are no reviews yet.

Be the first to review “MS3Pro Plug and Play SW0205 for 2002-2005 Subaru WRX”

Where is this product assembled?

  • This product is assembled in Suwanee, Georgia, USA

Is this all that I need to get started tuning my WRX?

  • This is meant to be a complete system, including the cables needed to connect to your laptop. However, there are several other things you may wish to add to use this unit to its full potential.

Does this unit support AVCS motor swaps?

  • It’s a bit awkward. The software has AVCS support, but there is only one cam sensor input. You will have to use the channel currently used by the VSS for the second cam sensor input. To get the ground speed input back, you could add a MicroSquirt running I/O Box code.

Questions & Answers

  1. 0 votes

    Currently, we have not been able to confirm JDM applications. Can you send us a pinout for your ECU, or if none is available, a picture of the ECU looking into the pins on the factory connector?

Send me a notification for each new answer.