Quick Links

4AGE AE86 Corolla MR2 MegaSquirt Plug and Play
4AGE AE86 Corolla MR2 MegaSquirt Plug and Play
4AGE AE86 Corolla MR2 MegaSquirt Plug and Play
MegaSquirtPNP G2 T8590 for the 85-89 Toyota 4AGE and 22RE
MegaSquirtPNP G2 T8590 for the 85-89 Toyota 4AGE and 22RE

Toyota MR2/Corolla 1985-1989 4AGE AW11/AE86 MR2 4Runner/Pickup 22RE/22RTE MSPNP Gen2 Plug and Play ECU


Frequently purchased together


Innovate Standalone Gauge Kit with LC-2 & Blue DB Gauge - 3795 – optional

USB to Serial Adapter - Trouble Free!! – optional


MegaSquirtPNP Gen2 Plug and Play for 4AGE AE86 Corolla MR2 is compatible with the following applications: 

*Fits several Toyota applications, all USDM with manual transmission:

  • 1985-1987 Toyota Corolla AE86 with 4AGE
  • 1985-1989 Toyota MR2 with 4AGE
  • 1987-1989 Toyota Corolla FWD models with 4AGE
  • 1985-1990 Toyota Pickup or 4Runner with 22RE and 22RTE

Please note that this one does not match the pinout for JDM 4AGE motors with factory MAP sensor.

MegaSquirtPNP Gen2 Plug and Play for 4AGE AE86 Corolla MR2 is easy to use and install!    

MegaSquirtPNP Gen2 Plug and Play for 4AGE AE86 Corolla MR2 Model #T8590 Features:

  • Fully Plug and Play Installation – No wiring required for basic functionality.  Average install time is under 1 hour!
  • 4AGE base map is pre-loaded to help your engine start on the first turn of the key (other model base maps included on USB stick)
  • Real time tuning and data logging with a laptop connection
  • Supports most aftermarket wideband sensors

Fully Tunable Engine Control!

  • 16×16 Fuel Tables allow high resolution tuning
  • 12×12 Ignition Tables
  • Multiple Acceleration enrichment strategies
  • Closed Loop Idle Speed Control
  • Air Conditioner Control
  • Up to 4 sequential fuel injector channels with individual trim tables (minor wiring change required to run sequential, 4AGE only)
  • Onboard peak and hold drivers support both high and low impedance injectors – No external ballast resistor is needed!
  • Allows removal of stock airflow meter

Advanced Feature Set (Included!)

  • 12×12 Air Fuel Ratio Target Tables for use with wide band O2 sensor for precise tuning and table trim.
  • Built-in 2-step rev limiter / launch control with flat shift
  • Real time barometric correction
  • Internal 4-bar MAP sensor reads up to 44PSI of boost
  • Overboost protection
  • Closed loop boost control (Requires boost solenoid kit)
  • Knock sensor input with adjustable sensitivity
  • Headphone output for knock sensor – listen for knock while you tune!
  • 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, Automatic Transmission Controller, Additional Sensors…..the possibilities are limitless!

What you get in the box:

  • MegaSquirtPNP T8590 ECU
  • MSPNP RS232 serial tuning cable, 6′ (USB adapter sold separately, if needed)
  • Tuning Software and Documentation USB Stick
  • 6′ Vacuum Hose for MAP Signal and ‘T’ fitting
  • Four Screws for ECU mounting

Note: Although there is a paid upgrade to TunerStudio, it is not needed to tune this ECU. The free version included on the USB Stick can access all the features and tables of the MegaSquirtPNP. The paid version of TunerStudio simply adds tuning and analysis software, such as VE Analyzer Live to tune the fuel tables based on wideband O2 feedback (requiring a wideband O2 sensor and controller, sold separately).

Customer reviews

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.

Only logged in customers who have purchased this product may write a review.

Where is this product assembled?

  • This product is assembled in Suwanee, Georgia, USA

Will this plug into my 4AGZE swap in my AE86?

  • The 4AGZE engine harness uses a different connector and will not plug in.

Is this all that I need to get started tuning my 4AGE?

  • The only other potential must-have is that if your laptop doesn’t have a 9 pin serial port, you will need our USB to serial adapter to connect to this unit. However, there are several other things you may wish to add to use this unit to its full potential.

What about the JDM 4AGE that used a MAP sensor?

  • Not only is the ECU pinout different, but these cars also used a different ignition system. Putting this MSPNP on one of those engines would require both repinning the harness and swapping to the USDM ignition module.

What about 20V swaps?

  • If you are using the 20V motor with the 16V wiring harness and ignition, this could work. It will not plug into a 20V harness. The ’96-’00 “Blacktop” wiring harness is very similar to the harness our ’93-’95 3S-GTE plug and play works with, but we have not been able to test this application in house.

Questions & Answers

  1. 0 votes

    Not unless you swap to a complete '90 or earlier wiring harness. The ECU plugs do not even physically plug in on most 1991 and later 22REs.

  2. 0 votes

    Not only did the MAP sensor equipped 4A-GE models use a different ECU pinout, they used a different enough ignition that simply repinning the harness won't work. It would require a separate MSPNP model to accommodate these cars.

    The main reason we haven't built a separate model has been that it is difficult for us to get our hands on a test car. This wiring setup was never sold in the United States, and most people who are going to take the effort and money to import a car that was not available typically go for something more exotic. Making a plug and play for this application would be possible if we had a large enough group buy and somebody willing to bring us a test car and let us keep it a couple months.

  3. 0 votes

    The Innovate wideband is a good call. The only other things we'd recommend would be a GM type air temperature sensor kit and a boost control solenoid. You'll make more power, and likely have an easier time tuning, if you remove the air flow meter completely. The MSPNP uses a built in MAP sensor for load.

  4. 0 votes
    Q Will this work with a USDM 4agze? answer now
    Asked on January 1, 2018 11:38 pm

    Only if it is being used with the 4A-GE naturally aspirated ignition and wiring harness. The 4A-GZE ECU uses a different ignition system, and the ECU connector is different as well.

  5. 0 votes

    This is not an application we have been able to get a wiring diagram for - if you can send us a diagram, we can check if this works.

  6. 0 votes

    For US market models, this one fits 1987 through 1989 AE92 models but does not fit AE92s from the 1990 or later model years. We have not been able to confirm compatibility with all JDM versions. At this point, we know it does not fit factory supercharged (4A-GZE) models. It also is known not to be compatible with units that used a MAP sensor and no air flow meter. If the engine has a vane type air flow meter and not a MAP sensor, the car was made before the 1990 model year, and has the same 42 pin connector shown, it will probably fit, but we have not been able to confirm this.

  7. 0 votes

    You'd need a complete 1990 and earlier wiring harness, and possibly the earlier distributor - the later wiring is completely different. A 1990 or earlier ECU usually won't even physically plug into '91 and later wiring. The later trucks also had several different ECU variants depending on drivetrain and transmission.

  8. 0 votes

    Yes, it supports both the naturally aspirated and factory turbo versions of the 22RE for the year range listed.

  9. 0 votes

    This unit is set up to work with a factory wiring harness. We currently do not sell the wiring harness itself.

You may also like…

  • MSPNP and DIYPNP IAT Sensor Kit – Aluminum Bung

    4 out of 5

    MegaSquirtPNP and DIYPNP IAT Sensor Kit - Aluminum BungThis is a simple kit to make it easier for you when removing your AFM/MAF when using a MegaSquirtPNP or DIYPNP. In many cases, the air temperature sensor is built into the MAF, so removing it will...

    Add to cart
  • Electronic Boost Control (EBC) Solenoid Kit

    5 out of 5

    This electronic boost control solenoid can be used with the MS3-Pro/MSPNP as well as any DIY Style MegaSquirt EMS (with the appropriate mods), or with other electronic boost controllers to control boost by adjusting the pressure to a turbo wastegate. Th...

    Add to cart
  • MSPNP and DIYPNP IAT Sensor Kit – Steel Bung

    5 out of 5

    MegaSquirtPNP and DIYPNP IAT Sensor Kit - Steel BungThis is a simple kit to make it easier for you when removing your AFM/MAF when using a MegaSquirtPNP or DIYPNP. In many cases, the air temperature sensor is built into the MAF, so removing it will re...

    Add to cart