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MicroSquirt Engine Management System with 8′ Wiring Harness

5.00 out of 5 based on 1 customer rating
(1 customer review )

$369.00

In stock

SKU: MicroSqrt8 Category: Brands: ,

Description

MicroSquirt Engine Management System with 8′ Wiring Harness

Version 3.0

The versatile MicroSquirt: Standalone Engine Management System, Transmission Controller or CAN I/O Expansion Module

Microsquirt is our entry-level fully assembled ECU with varied applications targeting power sport single cylinder all the way up to 8 cylinders with up to 2 fuel and 4 spark outputs.  Over 40 different ignition modes are supported from mainstream applications like GM LS1, Ford Zetec, Bosch Motronic, and Chrysler Gen III Hemis to unusual modes like Renix Jeep and the Suzuki Swift GTI.

MicroSquirt Engine Management Software Features

-Supports speed density, alpha-N (TPS based), or MAF based fuel and spark tables
-0.66 microsecond injector pulse width resolution
-Allows blending multiple load types, including specialized mode for independent throttle bodies
-Supports a wide variety of OEM cam and crank position sensors
-Accelerator pump or model based acceleration enrichment
-Closed or open loop idle speed and boost control -On/off nitrous control
-Wankel rotary support: 2 rotor engines with separate leading and trailing spark tables
-Staged injection
-Table switching
-16 x 16 fuel and spark tables
-2 step rev limiter (launch control) with no-lift shifting
-Wideband AFR target table
-Flex fuel sensor input
-Real time barometric correction (external sensor required)
-Sequential shift cut and air shifter control

MicroSquirt Transmission Control

MicroSquirt transmission control free firmware allows you to use microsquirt to control a number of electronic automatic transmissions (gearboxes). It can work standalone or integrate with one of our ECU’s over canbus.

Control applications:  GM 4L60E  I  GM 4L80E  I  GM 4T40E  I  GM 5L40E (dev)   A341E  I  41TE (dev)  I  Ford 4R70W  I  Ford E40D (dev)  I  Subaru W4A33

MicroSquirt CAN I/O Box Expansion

Microsquirt I/O Box firmware allows you to use a Microsquirt as a plug’n’play I/O extension box for the MS3 or MS3-Pro ECUs.  It can offer a useful I/O addition:

-7 Analog inputs (0-5V variable)
-2 Wheel speed inputs (VR or hall type)
-2 Wheel speed (hall type) or ground-switch inputs
-1 dedicated ground-switch input
-2 high current PWM/switch ground-switching outputs
-4 mid current PWM/switch ground-switching outputs
-1 low current PWM/switch 0-12V output
-Perfect for capturing and logging vehicle speed and additional sensor data (e.g. pre- and post- intercooler temperatures, fuel pressure, oil temperature etc.)

To Use a GM 1, 2, or 3 Bar MAP Sensor with the MicroSquirt

In the illustration:

A is ground,
B is the sensor output signal to MicroSquirt,
C takes 5 Volts from MicroSquirt.

The pins are marked A-B-C on the sensor itself.

Customers' review

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1 review for MicroSquirt Engine Management System with 8′ Wiring Harness

  1. 5 out of 5

    This is a great entry level ECU for applications where weatherproofing is a concern. It also works exceptionally well for transmission control or as an plug and play I/O extension for your MS3 or 3-Pro ECU

    Was this review helpful to you? 1 of 1 people found this review helpful

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Is this just for motorcycles and other small engines, or can it be used in a car or truck?

  • The MicroSquirt can run regular automotive engines; it's not just for powersports applications. It is possible to run this on a V8 in wasted spark, although it doesn't have very much I/O to spare for extra functions when using four spark outputs.

I've heard some people say it has two spark outputs and some say four. What's the deal?

  • It was originally designed for two spark outputs, but the MS2/Extra code allows you to use WLED and ALED outputs as additional spark outputs. You will need to add resistors in the wiring harness for using them with most coils.

Is it waterproof?

  • No, but you can make it waterproof with a bit of RTV silicone around the edge of the case.

Are there other versions of the MicroSquirt for other functions? Transmission control or the "IO Box", for example?

  • These all use the same ECU, just running different code to change its function and use it as a transmission control unit or I/O expansion device. See MSExtra.com for details.

Could I use two MicroSquirts, one running the engine and one running the transmission?

  • Yes. They would link up over their CAN networks to look like a single unit to the tuning software.

Where is this unit made?

  • They are built in the USA - electronics, harness, and case.

What do I need to tune this unit over USB?

Questions & Answers

  1. 0 votes
    A

    Measure the resistance of the injectors with an ohm meter. If they're low impedance, 4 ohms or less, you'll need current limiting resistors or a peak and hold driver module. The MicroSquirt can do timing control here no problem, too. To add electronic transmission control, you'll need to daisy chain it to a second MicroSquirt.

  2. 0 votes
    A

    Just load it with the MicroSquirt transmission control code and wire it up. The manual in that link will have the wiring diagrams for this transmission.

  3. 0 votes
    A

    While most sensors give a simple resistance or voltage based output, wideband oxygen sensors are different. The Bosch LSU sensor combines a Nerst cell (like a narrow band oxygen sensor) combined with an oxygen pump that extracts oxygen from the exhaust to determine the actual air-fuel ratio. It requires a control circuit to drive the pump, and none of its outputs are anything you can plug into a simple analog-to-digital converter and get a reading you can convert to oxygen levels. So a wideband oxygen sensor requires a dedicated controller circuit. As this circuit is not built into Megasquirt, you will need an external control device like an Innovate LC-2 to convert its output into a signal that Megasquirt can read. The gauge, however, is not required.

  4. 0 votes
    A

    No hardware mods are required for this particular install. See the Nippondenso CAS notes in the MicroSquirt Hardware Manual; the 13B is very similar. Email us if you have any questions.

  5. 0 votes
    A

    It should be a pretty straightforward install - email us with details about the crank trigger pattern and our support team can check if there are any likely issues.

  6. 0 votes
    A

    Yes, this can use the factory Honda sensors - even the MAP sensor if you don't need an upgrade for more boost. The one sensor that I would recommend changing is that I'd recommend adding a wideband O2 sensor if you're tuning it yourself. The MS2/Extra Setting Up Manual covers how to create a startup tune - most of it is pretty straightforward, and our tech support can help out if you get stuck.

  7. 0 votes
    A

    It can run a 3 cylinder with the injectors all firing in one group, although you'll want to temporarily get an O2 sensor on there somehow for the initial tuning stage.

  8. 0 votes
    A

    Yes, you won't be the first to run a modular motor with one. The MicroSquirt has a maximum of four spark outputs so it would need to either fire the coils in pairs or use coil packs. Fueling will be bank to bank.

  9. 0 votes
    A

    You can use a MicroSquirt here, although there are a couple limitations:

    1. The MicroSquirt does not have support for the factory crank and cam triggers. You would need to run an additional crank trigger.
    2. This engine uses a stepper-type idle air control valve. The MicroSquirt does not have an output for this.
    3. If this Jeep has a 4 speed automatic instead of a 3 speed, that needs electronic controls. Currently your best option would be a parallel installation with the stock ECU running the transmission and our ECU running the fuel and ignition.

    Stepping up to an MS3 may be a better idea if your budget allows; it would support the factory idle control valve and crank / cam triggers.

  10. 0 votes
    A

    Yes, it can control fuel, ignition, and the idle speed control valve. There will be two outputs left over that can be used for boost control, cooling fans, etc.

  11. 0 votes
    A

    You would need to run the coils in pairs, and swap to the later M20B25 crank trigger setup to use this combination, in addition to using a MAP sensor sized for your target boost level. Once you have added these parts, you can use a MicroSquirt on this engine.

  12. 0 votes
    A

    Yes, this ECU can supply up to four spark outputs. For a 4A-GE distributorless ignition setup, I recommend swapping to the cam angle sensor off a Japanese market AE92 4A-GZE motor; it's a bit easier to use with distributorless ignitions (and you have no distributor cap with empty terminals cluttering up your engine bay).

  13. 0 votes
    A

    Not much. On a typical install, you'll want to remove the vane air flow meter, so you'll want a GM type intake air temperature sensor and a MAP sensor. A wideband O2 sensor is going to be good for tuning as well.

  14. 0 votes
    A

    It can run this engine as long as you use our QuadSpark ignition module and a cable operated throttle body.

  15. 0 votes
    A

    We have had a number of customers run this on Subaru motors. It supports both 6/7 and 36-2-2-2 trigger patterns. We don't have a ready to go tune for this particular ECU, but the MS2 Setting Up Manual covers how to put together a startup tune, and if you run into trouble, we can go over your tune and data logs of the issue by email.

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