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KA24DE 240SX 9501b MegaSquirtPNP Gen 2
KA24DE 240SX 9501b MegaSquirtPNP Gen 2
KA24DE 240SX 9501b MegaSquirtPNP Gen 2
Nissan 240SX 1995, 1995-1997 Sentra/200sx/Altima MSPNP Gen2 Plug and Play ECU
MegaSquirtPNP G2 NS9501b for 96-98 Nissan 240SX - Manual Trans
MegaSquirtPNP G2 NS9501b for 96-98 Nissan 240SX - Manual Trans

Nissan 240SX 1996-1998, Altima 1997-2001 MSPNP Gen2 Plug and Play ECU



Frequently purchased together

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

USB to Serial Adapter - Trouble Free!!


These OEM ECU connectors are no longer available to purchase new.  Due to popular demand for this product though, we’ve created a trade in program where you must ship us a factory PCM with a good condition connector in order to build your new MSPNP Gen2 ECU.  We will remove the connector from your factory PCM to build your new MSPNP2.  Orders received without a proper trade-in will be refunded less a 7% administrative fee so please only place an order if you have a good condition ECU/Connector to send to us to use.  

You can place your order here on the website, and then follow these instructions: Customer_Instructions – MSPNP2-NS9501 Customer Supplied Connector Program to send us your connector.  We’ll build your ECU to order and get it out to you fast!

KA24DE 240SX 9501b MegaSquirtPNP Gen2 Plug and Play Standalone Engine Management System is compatible with the following:

  • 1996-1998 USDM Nissan 240SX with KA24DE engine and manual transmission
  • 1997-2001 Nissan Altima KA24DE and manual transmission

Second Generation MSPNP; Easy to Use and Install!    

KA24DE 240SX 9501b MegaSquirtPNP Gen2 Plug and Play Features:

  • Fully Plug and Play Installation – No wiring required for basic functionality.  Average install time is under 1 hour!
  • KA24DE 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 (Add on 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 MAF

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!

What you get in the box:

  • KA24DE 240SX 9501b MegaSquirtPNP 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). It also unlocks the ability to use customized dashboards, such as our MSPNP2 Dash, which is designed specifically to help make tuning your new build intuitive and easy!

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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.

My car originally came with an automatic transmission, but I’ve swapped it to a manual transmission. Will this MSPNP work for my car?

  • Yes. The only difference between wiring for manual and automatic transmission cars for this model are the wires used for transmission control.

Where is this product assembled?

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

Questions & Answers

    Will this work for a 96 200SX SE-R and if so will I need an iat sensor?
  1. 0 votes
    Q Will this work for a 96 200SX SE-R and if so will I need an iat sensor?
    Asked by Juan

    Note - this answer applies to the USDM, front wheel drive 200SX. This does not apply to the S14 Silvia sold as a 200SX in some markets!

    For a '96 200SX, you will want the MSPNP2 for a '95 240SX. For some reason, the 200SX did not get the minor wiring changes in 1996 that happened to the 240SX. This car does have an IAT sensor from the factory, so you do not need to add one.

    If you already have an MSPNP for a '96-'98 240SX and wish to install it in a '96 200SX, the unit will require changes to internal jumpers.

  2. Does this EMS work with an S15 Spec R SR20DET, or do you have another model that does?
  3. 0 votes
    Q Does this EMS work with an S15 Spec R SR20DET, or do you have another model that does?
    Asked by Jonathan Buchwalter

    We currently do not have a plug and play for later SR20DETs. It is something we may add in the future.

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