VEMS vs. MegaSquirt for Adam

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Thread: VEMS vs. MegaSquirt for Adam

  1. #1

    Join Date: Jan 2010
    Location: Damn near the north pole
    ME: EBMM JP7
    MB: Ibanez SDGR 705
    Rig: Axe Fx II

    iTrader: 1 (100%)

    VEMS vs. MegaSquirt for Adam

    Our leading product with a very strong feature set. Has the ability to control the smallest of engines to the largest you may want to build. The known record so far is 2175 hp in Robert Christell's Beast.
    Key Features

    * Sequential Control of up to 8 banks of injectors
    * Built in transistorised coil igniters for up to 8 coils
    * Built in Wideband controller
    * Turbo friendly features such as Exhaust Gas Temperature, Anti-lag, and boost control
    * Configurable control of low and high current drivers for lights, relays and solanoids
    * Field upgradable software
    * High Quality Case and Sealed Connectors
    * Datalogging via serial connection or optional SD card interface
    * Advanced Idle Air Control

    VEMS utilizes an advanced RISC microprocessor and surface mounted component technology, with state of the art electronics to allow you to precisely control your engine.
    Ask your regional VEMS dealer for more information
    VEMS is manufactured in the E.U.
    VEMS can be configured to use almost any standard OEM sensor for:

    * Throttle position
    * Coolant temperature
    * Air temperature
    * Crank and Cam sensors - configurable for the standard OEM configurations such as Ford 36-1, GM/Bosch 60-2, Audi 5 cylinder 135 tooth as well as being customizable for many different timing strategies
    * Manifold Pressure through a choice of either 250kpa or 400kpa built-in pressure sensor, or an external OEM type
    * External fuel and exhaust pressures

    Additionally VEMS also has the built in ability to control:

    * Integrated Wideband O2 Controller utilizing the low cost Bosch LSU4 sensor
    * Knock sensor
    * Up to 2 Exhaust Gas Temperature sensors

    Throughout the development of VEMS, Customization has been the focus. The number of driver channels are as plentiful as the ways of configuring their operation. Outputs can be triggered by temperature, rpm, throttle position, or air pressure. 6 Low current drivers providing control for relays (fuel pump, fan, water pump) or lights (shift light, activation light, MIL)
    8 High Current solenoid drivers that can be configured to control:

    * Fuel Injectors
    * Variable cam timing solenoids (VTEC, VVT etc)
    * Idle air controllers
    * Nitrous solenoids
    * Boost controllers

    VEMS features an advanced injector control system, which can control high impedence injectors with incredible precision.
    Coil drivers are built in and can be specified when purchasing a unit, up to 8 ignition coil drivers can be fitted, which can be configured to run single coils, wasted spark coil packs or Coil On Plugs. Because the coil control is built in VEMS has full control with coil charge/dwell times
    (Based on full featured MS3+MS3X+V3.57)
    Speed-density, alpha-n or MAF for fuelling calculations
    16x16 fuel tables in 0.1% steps with true interpolation and movable rows/columns
    16x16 spark tables in 0.1 degree steps with true interpolation and movable rows/columns
    Wall-wetting transient fuel control for better driveability
    On board datalogging to SDcard (max 333Hz sample rate)
    Tuning by serial or built-in USB-serial port.
    8 channels sequential fuel (hi-z injectors or low-z with external resistors)
    2 additional fuel channels (hi-z or low-z)
    8 channels sequential spark (logic level output)
    6 channels mid current output for small solenoids or relays
    2 'spare' conditioned 0-5V analogue inputs (+2 more raw)
    Two wideband oxygen sensor input (external controller required)
    (Up to eight widebands supported via external data capture)
    GM-style stepper idle control
    2 and 3 wire PWM idle control
    Closed loop idle control
    Closed loop mixture control - ideally with wideband
    Closed loop boost control
    Various boost control systems (gear, time, speed based)
    Two stage variable nitrous control
    2 step type launch control
    CAN communications to interconnect other Megasquirt products e.g. transmission controller
    Supports external data capture boards (e.g. for external EGT boards)
    EGT data support (with external amplifier)
    Staged injection
    Dual fuel (e.g. LPG)
    Table switching, (mainly for dual fuel use)
    Water/Meth injection
    Individual cylinder injector trim
    Injector phase timing
    Individual cylinder spark trim
    Support for numerous OEM trigger wheel patterns.
    Magnetic (VR), Hall, Opto crank sensor input
    Magnetic (VR), Hall, Opto cam sensor input
    Need to sort out the features a bit, but so far MS has the lead due to the self learning abilities, haven't found similar in VEMS.

    Don't worry about people talking behind your back, it just means you're one step ahead and they're in perfect position to kiss your ass!

  2. #2

    Join Date: Sep 2008
    Location: Austin, TX
    ME: 90 RG570
    Rig: Digitech GSP2101

    iTrader: 5 (100%)

    VE Analyzer Live is a very powerful tool. All the other stuff that comes with VEMS is things you might not necessarily need. Megasquirt is cheaper because it supports the things you will need but doesn't necessarily come with them. It's still very powerful on its own though.

  3. #3

    Join Date: Jan 2010
    Location: Damn near the north pole
    ME: EBMM JP7
    MB: Ibanez SDGR 705
    Rig: Axe Fx II

    iTrader: 1 (100%)

    Depends on application I guess...
    So VE analyzer is somewhat like autotune then?

  4. #4

    Join Date: Sep 2008
    Location: Austin, TX
    ME: 90 RG570
    Rig: Digitech GSP2101

    iTrader: 5 (100%)

    Yeah, it adjusts values on the fly based on how you drive, your MAT, MAP, barometer, wideband, etc. It can get extremely close to where you'd be at with a proper dyno tune, to the point there's not much tuning left to be done. It's very intelligent.

    I'm not sure how easy it is to do with the VEMS unit but I'm building my Megasquirt in a stock ECU housing using the stock ECU harness and I just returned my Pathfinder to stock in under 30 minutes while I troubleshoot a no spark issue.

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