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KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play
KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans
KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play
MegaSquirtPNP G2 NS9501a for the 1995 Nissan 240SX - Manual Trans

KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play

From: $799.00

Due to high demand, this ECU is currently in production and will begin shipping May 15th in the order received. ORDER TODAY and receive $80 in store credit once yours is received!  [LIMIT 5; Promotion ends on May 15th @ MIDNIGHT EST]


USB to Serial Adapter -TunerStudio – optional

In stock

$80 Store Credit (Requires Activation)


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

1995 USDM Nissan 240SX with KA24DE engine and manual transmission
*Also compatible with the following USDM applications (all with manual trans):

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

KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play

KA24DE 240SX 9501a MegaSquirtPNP Gen2 Plug and Play #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 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 9501a MegaSquirtPNP Gen2 Plug and Play 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.

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. The car we used for initial testing on this particular MSPNP had just such a swap.

Questions & Answers

  1. 0 votes

    Yes - we actually used exactly that sort of swap on one of our test cars. The problem with automatic equipped cars is not that the wiring pinout is any different, but rather that the MSPNP does not support the signals sent between the stock ECU and the transmission controller.

  2. 0 votes

    Thank you for asking. Unfortunately, this year Frontier used a different connector with a larger pinout. It looks similar, but the ECU physically won't plug in.

  3. 0 votes

    It's not required. The paid version of TunerStudio will give you some cool tuning tools like Tune Analyze Live, but the free version can access every setting in this ECU. See the TunerStudio version comparison for details.

    This unit would have shipped with a base tune for a KA24DE. If the car isn't running well on that, please email us a copy of your tune and a data log of what's going on (even if it's not running, a data log of an attempted start will still be useful). We'll go over these and get back to you with what to check. We'll get this taken care of.

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