Marine Mods Inc

Marine Mods CAN-2-CAN Gateway with Holley® Standard to NMEA2000 Protocol comes in two primary configuration options below. This covers all ECU models, however gauges displayed by the Sniper units is limited at this time.

• Airboat / Off-Road Racing
• Inboard Marine with Auxiliary Inputs

Each gateway comes with a short M12 to HEFI harness pigtail for ECU side connection. If mounting gateway further away from the ECU, a twisted pair extension cable is required.

* Quantity Discount (2 or more)
In multi-engine applications, one gateway is required per engine to set Instance on the NMEA network. Instance # is set by an internal dip switch. If more than two engines installed, please Contact Us before purchase for a custom instance firmware.

* Installation and Updated Instructions In Downloads Tab Above.

Full N2k gauge coverage list in table below. Custom protocol changes available upon request.

HEFI to NMEA2000	Air Boat		Inboard
PGN 127488				Notes
Engine Parameter Rapid
Engine Speed	Included		Included
Boost Pressure	Included		Included
Tilt-Trim Position	N/A		Included	AUX INPUT # 1
PGN 127489				Notes
Engine Parameters
Oil Pressure	Included		Included
Oil Temperature	N/A		Included	AUX INPUT # 2
Temperature	Included		Included
Alternator Volts	Included		Included	ECU Voltage
Fuel Rate	Included		Included
Total Hours	N/A		N/A
Coolant Pressure	N/A		Included	AUX INPUT # 3
Fuel Pressure	Included		Included
Percent Load	Included		Included	ECU Throttle Position
Percent Torque	N/A		N/A
Status Indicators
Check Engine	N/A		N/A
Over Temp	Included		Included	ECU Defined
Low Oil Pressure	Included		Included	ECU Defined
Low Oil Level	N/A		N/A
Low Fuel Pressure	Included		Included	ECU Defined
Low System Voltage	Included		Included	ECU Defined
Coolant Level	N/A		N/A
Water Flow	N/A		N/A
Water In Fuel	N/A		N/A
Charge Indicator	Included		Included	ECU Defined
Preheat Indicator	N/A		N/A
High Boost Pressure	Included		Included	ECU Defined
Rev Limit Exceeded	Included		Included	ECU Defined
EGR System	N/A		N/A
Throttle Position Sensor	N/A		N/A
Emergency Stop Mode	N/A		N/A
Warning Level 1	Included		Included	IAT Alarm
Warning Level 2	N/A		N/A
Power Reduction	N/A		N/A
Maintenance Needed	N/A		N/A
Comm Error	N/A		N/A
Sub or Secondary Throttle	N/A		N/A
Engine Shutting Down	N/A		N/A
PGN 127493				Notes
Transmission Parameters
Gear	N/A		N/A	ECU Dependent
Oil Pressure	N/A		N/A	ECU Dependent
Oil Temperature	N/A		N/A	ECU Dependent
Discrete Status
Check Transmission	N/A		N/A
Over Temperature	N/A		N/A
Low Oil Pressure	N/A		N/A
Low Oil Level	N/A		N/A
PGN 127505				Notes
Fluid Level
Fluid Type	N/A		N/A
Fluid Level	N/A		N/A
Tank Capacity	N/A		N/A
PGN 127508				Notes
Battery Status
Battery Voltage	Included		Included	ECU Voltage
Battery Current	N/A		N/A
Battery Case Temperature	N/A		N/A
PGN 130310				Notes
Environmental Parameters
Water Temp	N/A		N/A
Outside Ambient Air Temp.	Included		Included	IAT Value
Atmospheric Pressure	Included		Included
PGN 128259				Notes
Speed
Speed Water Referenced	N/A		N/A
Speed Ground Referenced	N/A		N/A
Speed Water Referenced Type	N/A		N/A
PGN 130576				Notes
Small Craft Status
Port Trim Tab	N/A		Optional	AUX INPUT # 4
Starboard Trim Tab	N/A		Optional	AUX INPUT # 5

Marine Mods CAN-2-CAN J1939 Gateway converts industrial and heavy equipment CANbus protocol J1939, into NMEA2000 protocol for use with compatible gauges and multi-function displays. The J1939 gateway translates all major engine and transmission related parameters.

Trim Tabs to NMEA2000 Gateway.

• Works With All OEM Style 5v Position Sensors
• Easy End User Setup And Calibration Process
• Performs System Diagnostic Checks On Startup
• 33C Cable To 5v Digital Adapters Available

Our latest in-house design, this 6-channel ADC gateway allows the addition of Trim Tab position on N2k equipped multi-function displays. High resolution inputs channels, easy 3-step calibration process, provides the end user with a full scale view of tab positions. These units can also be programed to read Drive Trim position for up to 4 outdrives, along with 2 tabs.

Each gateway comes with a M12-8 pin pigtail cable. Custom length plug-n-play cable kits available upon request.

N2K PGN 130576 - Small Craft Status

* Port Trim Tab

* Starboard Trim Tab

Pre-Order Now For Our 10.1.2023 Release Date.

Contact Us About Our New Jackplate Firmware Option.

Monitor up to 6 outboard engine jackplate positions on your MFD with a single controller..


Pre-order Now For Our 10.1.2023 Release Date

Marine Mods GMLAN - N2k Gateway covers all High Speed GM CANbus protocols used on model years 2004 to 2019. Allowing OEM hardware builders the option to run NMEA2000 based MFD's or gauge sets, with just two wires on stand alone engine applications.

Rather than using a traditional OBD2 "request and reply" PID structure to gather gauge data, our code reads raw steaming data from the OEM ECM and TCM just like other GM CANbus hardware. For certain gauge parameters not inherit to a factory dash like IAT or Boost, we use Dynamic PID's to instruct the ECM to include this extra data inside the normal broadcast stream. This equals a much cleaner approach, with no delay or lag on the gauges displayed.

HS GMLAN or GM GLOBAL-A Protocol is fairly common across all GM models. However there are some slight differences in gauge related data packets between ECM hardware and OS versions. For this reason we have tried to split up the firmware configuration options based on ECM models. Please Contact Us with any compatibility questions.

Current ECM Coverage

• E38
• E67
• E92
• E94
• E35A
• E35B

Building on our race proven CAN-2-CAN gateways, MMI recently developed a 0-5V 12 bit ADC version. This new CANbus gateway connects to, and receives power from the N2k network via our standard male IP67 rated M12 5-pin bulkhead connector. The same NMEA-2000 or Devicenet cabling, just like our other gateway units.

For analog inputs, a male IP67 rated M12 8-pin bulkhead connector tied to a 6 channel ADC chip, along with 5v high and low level reference lines. Allowing this gateway to connect up to 6 analog input channels from standard 5v sensors or potentiometers. It then outputs the converted values on any two wire CANbus network.

On the outside we’ve kept our same IP67 UL rated case. Then we added a board mounted IP67 rated RGB push button momentary switch. This illuminated button allows for easy sensor scaling and calibration. It can also display specific error notifications using colors and flashing patterns. 

Easily add important data to your display that current ECM/PCM setups doesn’t cover. No-matter the hardware or CANbus protocol, this ADC Gateway can likely talk to it.

Currently available N2k firmware options below. Others options available upon request.

N2K PGN 130576 - Small Craft Status

* Port Trim Tab

* Starboard Trim Tab