Welcome to ExtraEFI - with over 20 years supplying, modifying and providing technical support for all your MegaSquirt needs.
MS3Pro ECU's inc MS3Pro Mini now available
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MegaSquirt is an affordable, standalone, Mappable Engine Management System that can control the Fuel and Ignition on virtually any liquid fueled spark-ignition engine, naturally aspirated or boosted.
A MegaSquirt ECU can give you Mappable Ignition using:
- A distributor setup with a simple hall sensor/points in the distributor or a cam/crank signal.
- Wasted Spark - A coil pack setup using a variety of cam/crank signals.
- Sequential Firing - A Coil On Plug (COP) setup using a variety of cam/crank signals.
and Mappable Fuel in these modes:
- Batch Fire.
- Semi-Sequential Firing using a variety of cam/crank signals.
- Fully-Sequential Firing using a variety of cam and crank signals.
As standard my MegaSquirt ECUs come with
- a bare ended loom, for you to wire into your setup. See HERE
- The Rover V8 has the option of a custom made loom (depending on availability of connectors) See HERE
- Plug-n-Play formats for theMazda MX5
We also stock the MicroSquirt, the MS3Pro EVO and MS3Pro Mini's, all supplied with:
- a 8' bare ended loom, for you to wire into your setup. See HERE
We have been building MegaSquirt ECU's since 2003 and I'm one of the team who wrote the MS-Extra Code, so you can rest assured this is THE place to purchase your MS ECU, with the knowledge that you will be getting what you need, rather than what someone wants to sell you.
No other MegaSquirt sales website comes close to this one for information, knowledge and backup of MS ECUs!
Everything you need to know is on this site, that includes video help files. If you still have any questions then I can answer them due to my experience with the actual firmware the ECU's run and with the years of experience I have building, tuning and testing them!
ExtraEFI was setup in 2005 with a simple aim; to supply fully assembled, tested and warranted MegaSquirt ECU's to a very high standard.
Are you still confused about MegaSquirt? Click here
All of the ECU's I sell have the MS-Extra code loaded into them, these are some of the features that come as standard:
Mappable Fuel table
16x16 fuel table for finer control
Mappable Spark table
12x12 spark table for accurate ignition control
Rev limiter
Cut fuel and or ignition
Overboost Protection
Protects your engine from overboosting and causing damage.
Air:Fuel Ratio Targets
Mappable Air-Fuel ratio targets for EGO correction.
Lambda Sensors
Wide Band (with controller) and Narrow Band
Coolant based Timing Advancement
Increase advance when the engine is cold
Air Temp based Timing Retard
Remove advance from table if Inlet Air gets hot
Closed Loop Ignition Idle
Use the ignition timing to stabilise idle speed
Closed Loop Idle Control
Control the idle valve to maintain target engine speeds
Acceleration Enrichment
Based on an adjustable blend of MAP / Throttle Position rate of change
Overrun fuel cut
Improve Fuel Economy by cutting fuel on overrun.
Hybrid Alpha-N
Use a combination/blend of the TPS & MAP sensors to calculate engine load.
Staged Injection
Use 2 banks of injectors at different positions in the inlet track.
Air Density Correction
Built in Air Density Correction
PWM Idle Control valves
Support for 2 and 3 wired PWM controlled valves.
Stepper Motor Idle Control Valves
Support for 4 wired stepper controlled valves.
Fuel & Ignition
Control Fuel and Ignition, Fuel Only or Ignition Only