MegaSquirtPNP G2 NS8994 for the 89-94 Nissan 240SX – Manual Trans
MegaSquirtPNP G2 NS8994 for the 89-94 Nissan 240SX – Manual TransMegaSquirtPNP G2 NS8994 for the 89-94 Nissan 240SX – Manual TransMegaSquirtPNP G2 NS8994 for the 89-94 Nissan 240SX – Manual Trans

MegaSquirtPNP Gen2 NS8994 for the 89-94 Nissan 240SX – Manual Trans

5 out of 5 based on 1 customer rating
(1 customer review)


In stock

SKU: MSPNP2-NS8994 Category: Brand:

Product Description

MegaSquirtPNP Gen2 – Plug-N-Play Standalone Engine Management System

1989-1994 Nissan 240SX KA24E or KA24DE with manual transmission
*Also fits the following USDM applications (all with manual trans):

  • 1991-1994 Nissan Sentra / NX1600 / NX2000 with GA16DE or SR20DE
  • 1991-1993 Infiniti G20 with SR20DE
  • 1990-1995 D21 Hardbody pickup with KA24E
  • 1993-1994 Altima with KA24DE

Second Generation MSPNP; Easy to Use and Install!    

MegaSquirtPNP Model #NS8994 Features:

  • Fully Plug and Play Installation – No wiring required for basic functionality.  Average install time is under 1 hour!
  • KA24 base maps is pre-loaded to help your engine start on the first turn of the key (other model base maps included on CD)
  • 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 (optional trigger disc required for sequential injection)
  • 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 EBC 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!

Note: Many of these models do not have an IAT (Intake Air Temperature) sensor from the factory. On these cars, we strongly recommend installing a GM IAT to allow for air temperature correction.
What you get in the box:

MegaSquirtPNP NS8994 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).

1 review for MegaSquirtPNP Gen2 NS8994 for the 89-94 Nissan 240SX – Manual Trans

  1. 5 out of 5


    Best bang for the buck! As you already know, MS is great. The ease of install with the PnP is awesome. I currently have the DIY Trigger Wheel and LS2 coils setup. I have configured my e-Fan to work with the ecu as well. No separate fan controller needed which saves money or the money you were going to spend on the unit, put it towards the EMS. With Boost control available, MS can control just about everything. It is great to be able to open your laptop and control a majority of components in one program rather than having piggybacks with separate controllers. The list goes on and on and so far, I have not used all of the features. To top it off, DIY’s customer service is great! Always there to help and courteous. Keep it up DIY!

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Is this all that I need to get started tuning my 240SX?

  • 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.
    • If you are tuning it yourself, a wideband O2 sensor system is a must have for adjusting the fuel.
    • Our bolt in trigger wheel kit will allow using sequential injection or distributorless ignition conversions. Single cam KA24E motors typically require a 54 mm trigger wheel, while twin cam KA24DE motors usually require a 50 mm trigger wheel. This MSPNP fits a wide variety of applications and Nissan built many variants of this engine, so please measure the wheel in your distributor before ordering a trigger wheel.
    • This unit can function as a boost controller if you add our boost control solenoid package.

Where is this product assembled?

  • This product is assembled in Suwanee, Georgia, USA.