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MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans

Nissan 240SX 1995, 1995-1997 Sentra/200sx/Altima MSPNP Gen2 Plug and Play ECU





These OEM ECU connectors are no longer readily available to purchase new.  However, due to popular demand for this product though, we’ve created a program where you can either ship us a factory PCM with a good condition connector in order to build your new MSPNP Gen2 ECU or we can provide one for an additional $100USD.  If you send in a connector, we will remove the connector from your factory PCM to build your new MSPNP2.  Orders received without a proper trade-in or purchase of the new connector will be refunded less a 7% administrative fee so please only place an order if you intend to purchase a new connector from us or provide us with an ECU/Connector in good condition to send in to us.

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


MSPNP2 Plug and Play Standalone Engine Management System

  • 1995 USDM Nissan 240SX with KA24DE engine and manual transmission
  • 1996-1997 Nissan Hardbody Pickup with KA24E (manual transmission)
  • 1995-1997 Nissan Sentra with SR20DE (manual transmission)
  • 1995-1997 Nissan 200SX (USDM, front wheel drive, manual transmission)
  • 1995-1996 Nissan Altima with KA24DE (manual transmission)

Second Generation MSPNP; Easy to Use and Install!

MSPNP2 Model #NS9501a 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 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 (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:

  • MSPNP2 Standalone Plug and Play NS9501a 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).

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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.

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