Megasquirt-3 with pcb v3.0 kit

History

The Megasquirt’s predecessor was the EFI332 project, led by Bruce Bowling and Al Grippo. EFI332 development started around 1999 and culminated in the release of about 200 kits in 2000. The system used a 32-bit MC68332 microcontroller from Motorola. A very steep coding, electronic design, and tuning curve prevented the system from gaining wider acceptance.

The designers then decided to simplify the EFI332 design, and focus on managing the fuel injectors (the EFI332 was also designed to control the spark plug ignition system if so desired). This was the basis for the first MegaSquirt (MS-I).

The MegaSquirt was launched on September 15th 2001.

Description

MegaSquirt MS3X Wiring Bundle – Length = 8′

• 8′ of TXL High temp automotive grade wire.
• Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here!
• Use with MS3X Expansion board or other sequential device

Just like the MS3X harness, but with no DB37 connector. We’ve custom printed these to include all the inputs and outputs on the expansion board. Use for making your own wiring harnesses, or for wiring up non-MegaSquirt systems as well. Includes wiring for sequential injection, sequential coil on plug, nitrous, boost control, and more.

Current Products

Description

MegaSquirt MS3X Wiring Bundle – Length = 23″

• ~23″ of TXL High temp automotive grade wire.
• Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here!
• Use with MS3X Expansion board or other sequential device

Just like a short run of the MS3X harness, but with no DB37 connector.  We envisioned this being used to build short harness adapters to join your MS ECU to your stock wiring harness, either directly to the wiring (cut off the stock EC connector) or through the use of a DIYBOB or other means of adapting an OEM connector to build a short patch harness to allow you to plug your MS ECU right into your factory wiring.

We’ve custom printed these to include all the inputs and outputs on the expansion board. Use for making your own wiring harnesses, or for wiring up non-MegaSquirt systems as well. Includes wiring for sequential injection, sequential coil on plug, nitrous, boost control, and more.

Megasquirt-3 Software features:

• Supports speed density, alpha-N (TPS based), or MAF based fuel and spark tables
• 1 microsecond injector pulse width resolution
• Tables for nonlinear injector behavior at small pulse widths
• Allows blending multiple load types, including specialized mode for independent throttle bodies
• Supports a wide variety of OEM cam and crank position sensors
• Individual cylinder trim tables for fuel and ignition
• Accelerator pump or model based acceleration enrichment
• Closed or open loop idle speed control
• Closed or open loop boost control with two separate wastegate outputs, and gear or speed based tuning options
• On/off or closed loop continuously variable valve timing (VVT) control – supports up to 4 channels
• On/off or progressive nitrous control
• Traction control by VSS or RPM
• Rally anti-lag with rotational idle
• Wankel rotary support – can run up to 4 rotor engines with separate leading and trailing spark tables
• Staged injection
• Table switching
• 16 x 16 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
• 2 or 3 step rev limiter (launch control) with no-lift shifting
• Wideband AFR target tables
• 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
• Allows repurposing injector or ignition outputs as general purpose outputs.
• Real time barometric correction (external sensor required)
• A/C and cooling fan control with idle compensation
• Safety shutdown based on AFR or EGT input
• Sequential shift cut and air shifter control
• 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

Manuals are available here

Description

Important Note:  Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning the enclosure used with our MS2 ECUs.    Your MS2 will now be built using the MS3 enclosure, which will help facilitate potential future upgrades from MS2 to MS3 without extra cost.  The finish is brushed silver.  We appreciate your understanding.  

MegaSquirt 2 EMS (with MS2 Extra firmware) stand alone engine management system assembled with the latest surface mount PCB3.57 with brushed aluminum case – Assembled Unit Part # MS2357-C

MegaSquirt has been installed on thousands of engines from purpose built race-cars to restored classics. Turbo, supercharged, or NA the MegaSquirt can handle your fueling needs. More information about MegaSquirt can be found in DIYAutoTune’s thorough F.A.Q.

MS2 Extra changed the landscape for the do-it-yourself, hardcore hobbyist racer providing an affordable engine management system built to support all facets of competitive racing.  Just ask Austin Emrany, who took his turbo charged sbf Mustang into the 8’s with his MS2/Extra system!

If there’s a feature you need, chances are MS2 Extra can do it!

• Cam/ crank wheel decoding for a stack of different ignition system trigger wheels
• Coil on plug/wasted spark ignition
• 16×16 Volumetric Efficiency (VE) and 12 x 12 Ignition Tables
• Boost control
• Shift Light control
• Water Injection control
• Knock Sensor Input
• Staged Injection
• 2 Stage Nitrous Control
• And plenty more! –  Visit MSExtra.com for the full feature list!

Features / Benefits of all MegaSquirt EFI Systems

• Onboard MAP sensor for NA or boosted engines up to 21psi! (Upgradeable to 44psi)
• Speed density or Alpha-N.
• Use any injector – High or Low impedance.
• Compatible with output from narrowband sensors and wideband O2 systems.
• Log data on your laptop for later analysis.
• Tuning software is free for download and regularly updated with new features.
• Source code and hardware information is available online allowing you to customize things beyond the massive featureset already available if you choose.
• Includes proper female DB37 and DB15 connectors and shells for building your wiring harness.
• Professionally Machined Brushed Aluminum Case with Endplates. Excellent Fit and Finish! Flanged for easy mounting.
• Supports use of original MS tach input, ignition coil triggering, VR, Hall and Optical sensor triggering.

MS2 Extra MegaSquirt 2 processor-specific features:

• 24 MHz HCS12 processor
• Fuel control to 1 µsec (100 times more resolution than MegaSquirt-I)
• Ignition control (full spark timing advance control, dwell control, etc) for one coil/distributor (7 pin HEI for example) and Ford’s EDIS systems
• On-board stepper motor driver for IAC stepper control (we install the jumpers for this by default)
• Ford PWM idle valve firmware support
• Built-in rev limiter, either ‘fuel cut’ or ‘spark retard’
• All tables are now 12×12 in size
• WBO2 AFR target table (in AFR units)
• Independent dual-tables for VE and AFR target
• EGO feedback in wide-band mode is proportional to the difference between the measured AFR and the target AFR, the bigger the difference, the bigger the feedback step
• Spark advance table can have different rpm and kpa bins than VE and AFR tables
• CANbus networking
• Barometric correction amount and direction configurable in software, and provisions for:
  • barometric correction based on initial MAP reading
  •  independent 2nd barometric MAP sensor for continuous real-time baro correction or
  • no baro correction.
• TPS values for open loop and flood clear mode are user configurable
• MAP based open loop can be set as well as TPS
• Both TPS and MAP based accel enrichment is built into the code, you can configure the ratio of each
• Blended Alpha-N and speed density is an option
• 2 spare I/O lines for custom controls. (This is in addition to 4 lines for Idle stepper control if you don’t need this, or the Fast idle solenoid then becomes a spare if you do use a stepper motor.)

Features specific to the latest PCB Version 3.57 Surface Mount PCB

Description

Important Note:  Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning to brushed silver enclosures.  We appreciate your understanding.  

Included is a MegaSquirt-III Engine Management System w/PCB3.0 – Unassembled Kit Part # MS330-K

This MS330-K_BL kit includes everything you will need to build your MegaSquirt-3. The genuine B&G partial kit with V3.0 PCB, everything in the standard Bill Of Materials, the MS3 daughter board kit, the case, pre-machined endplates and heatsink bar, even the tube of heatsink compound and a bit of jumper wire is included. All you add is tools, solder, and time! The MS3X Xpander board is sold separately and allows you to fully take advantage of the MegaSquirt-3, including 8-cylinder sequential injection, 8 ignition outputs allowing 8-cylinder coil on plug, nitrous control, and more. Add a tuning cable to your order if you don’t have one already. 

The BIP373 coil driver is sold separately and is only required for direct coil control. If you are using “smart” coils with internal or ignition modules or “dumb” coils with external ignition modules, you do not need any BIP373 drivers.  You only need BIP373 if you have a dumb coil and do not have an ignition module.  

MS330-K Kit Bill Of Materials (BOM) Includes:

• MS3 Daughter Card
• All ‘Basic Components’, including 2.5 bar MAP sensor
• PWM Flyback Damping Circuit components
• Hall Sensor/Coil(-) and VR Sensor Ignition Trigger Components
• Current Limiting Circuit Components

The MS3 daughter card on its own will give you all these features and more:

• VE and ignition tables are now both 16 x 16
• 0.1% steps on VE table, 0.1 degree steps on ignition table
• Socket for an onboard SD card – no laptop required for data logging  (SD Card not included)
• Built in USB port
• GM stepper IAC control
• Closed loop idle and mixture control
• CANBus communications for interface with GPIO Board, IO Extender, or other devices
• Staged injection
• Native support for many different OEM trigger patterns

The MS3 also gives you a starting point for even more expansion. You will be able to connect the headers on this board to additional hardware, such as the MS3X board to enable features like these:

• 8 channels sequential fuel control
• 8 channel sequential ignition control
• Individual fuel and spark trim for cylinder by cylinder tuning
• 2 and 3 channel PWM IAC control
• 2 stage nitrous controller
• Table switching for multi-fuel engines
• 2 step launch control
• And more!

For complete MS3 documentation, see ms3efi.com.

Megasquirt-3 Hardware features:

• Freescale MC9S12X 16 bit, 50 MHz asymmetrical dual core processor
• 8 saturated injector drivers
• 8 logic level ignition outputs
• 5 medium current (3 amp) general purpose outputs
• All unused injector and ignition outputs can be used as spare on/off or other outputs.
• 1 stepper H-bridge driver
• Camshaft and crankshaft inputs – supports VR, Hall effect, and optical input
• 12 volt tach output
• Fuel pump output
• 8 analog inputs (5 dedicated sensor inputs, 3 spare/general purpose)
• 4 spare digital on/off inputs
• 1 spare digital frequency inputs
• RS232, USB 2.0, and CAN communication
• Onboard SD card slot for internal data logging
• Temperature range: -40 to +85 degrees C

Optional hardware features:

• 2 knock sensor inputs
• Real time clock