Plug-N-Play Standalone Engine Management System

MSPNP Pro Feature Set

This is a general feature set of the MSPNP Pro ECUs, features available in specific models will vary, see below for specifics on each model.

  Easy to Use and Install!
  • Fully Plug and Play Installation - No wiring required for basic functionality. Average install time is under 1 hour for most models!
  • Base maps are pre-loaded to help your engine start on the first turn of the key
  • Real time tuning and data logging with a laptop connection
  • Supports most aftermarket wideband sensors
  Fully Tunable Engine Control!  
  • 16x16 Fuel and Spark Tables allow high resolution tuning
  • Fuel and Spark tables can be reconfigured to function as 30 x 16 or 16 x 30 by switching tables based on RPM or load
  • Multiple Acceleration enrichment strategies
  • Closed Loop Idle Speed Control
  • A/C and cooling fan control with idle compensation
  • Up to 12 fuel injector channels with individual trim tables available in sequential models (application dependent)
  • Onboard peak and hold drivers support both high and low impedance injectors - No external ballast resistor is needed!
  • Allows removal of stock airflow meter (if equipped)
  • Supports speed density, alpha-N (TPS based), or MAF based fuel and spark tables
  • Table switching
  Advanced Feature Set (Included!)  
  • 12x12 Air Fuel Ratio Target Tables for use with wide band O2 sensor for precise tuning and table trim.
  • Built-in support for a wide array of ignition triggers
  • 2 or 3 step rev limiter (launch control) with no-lift shifting
  • Launch Control
  • Real time barometric correction
  • Internal 4-bar MAP sensor reads up to 44PSI of boost
  • Overboost protection
  • Closed loop boost control
  • Knock sensor input with adjustable sensitivity
  • Table switching input. Change fuel and spark maps on the fly for different fuels, maximum power, maximum economy, nitrous activation, etc.
  • Accelerator pump or model based acceleration enrichment
  • Closed or open loop boost control with two separate wastegate outputs, and gear or speed based tuning options
  • On/off or progressive nitrous control
  • Rally anti-lag with rotational idle
  • Flex fuel sensor input for easy switching between gasoline and E85 - can automatically change fuel, ignition, and boost maps based on ethanol content of gasoline
  • Knock control with adjustable crank angle windowing can adjust sensitivity based on RPM or which cylinder is firing
  • Safety shutdown based on AFR or EGT input
  • Diagnostics to detect and ignore failing sensors - can even automatically switch from speed density to alpha-N in the event of a MAP sensor failure
  • Built in Real Time Clock (RTC)
  • Freescale MC9S12X 16 bit, 50 MHz asymmetrical dual core processor
  • Onboard peak and hold drivers support both high and low impedance injectors - No external ballast resistor is needed!
  • Onboard 8 gigabyte SD card for internal data logging
  • Internal ECU temperature sensor
  • Real time clock
  • Tables for nonlinear injector behavior at small pulse widths
  • Allows blending multiple load types, including specialized mode for independent throttle bodies
  • Individual cylinder trim tables for fuel and ignition
  • On/off or closed loop continuously variable valve timing (VVT) control - supports up to 4 channels
  • CANBus connector allows interconnection of other MegaSquirt-compatible devices for additional functions such as EGT Input, Automatic Transmission Controller, Additional Sensors.....the possibilities are limitless!

The EFI Tuners Guide

A Free Education In Electronic Fuel Injection and Ignition Control - How to Plan, Install, Configure and Tune your Standalone EMS!


The MegaSquirtPNP, as with any programmable engine management system, may not
be legal for use on pollution controlled vehicles and is therefore produced and sold for off road/race use only. Check federal/local laws.

MegaSquirtPNP, MSPNP, MegaSquirt PNP, and MS PNP, are trademarks of Hoffmann Innovations, Inc d/b/a