Step 01· Done
Get to the stock ECU
Key off. Remove the center console cover by sliding it back and up; the ECU is under it. Unplug the stock ECU from its harness carefully and keep it.
Install guide · Yamaha YXZ 1000R · Emtron
Emtron YXZ.
Emtron YXZ.
Plug in. Then tune.
Emtron’s plug-in ECU for the Yamaha YXZ 1000R swaps in for the stock ECU on the factory harness. What it is, how it goes in, the one sensor you must never move, and how to add an ethanol sensor or a CAN gauge.
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234-pin waterproof connectors, plug-and-play on the YXZ harness
32MBOn-board logging, over 1,200 channels
470GBillet aluminum case
The install
Plug and play, in 5 steps.
Check them off as you go; this page remembers where you are on this device.
Step 02· Done
Plug in the Emtron
The Emtron YXZ1000R ECU is built to plug straight into the factory harness: two waterproof 34-pin connectors, A and B, in a billet aluminum case. No splicing for a stock-harness install. Secure it where the stock ECU sat.
Connectors2 × 34-pinCase120 × 130 × 27 mm, 470 g
Step 03· Done
Connect a laptop
Emtron’s tuning software, Emtune, is free and runs on Windows. The ECU talks to it over Ethernet, through Emtron’s Ethernet tuning cable (Emtron part 553-15).
SoftwareEmtune, WindowsCableEthernet, 553-15
Step 04· Done
Get your calibration
The Emtron needs a calibration written for your engine and mods. Send us your build on the tune build sheet with “Emtron” as the ECU.
Step 05· Done
Going boosted? Swap the right MAP sensor
A supercharged or turbo YXZ needs a MAP sensor that reads boost. The one to replace is on cylinder 2 (Emtron input AV3, manifold pressure).
Never replace the MAP sensor on cylinder 1. The Emtron uses it to synchronize the engine. Swap it and the ECU loses sync and the engine won’t start.
Boosted builds
One sensor stays. One goes.
The YXZ reads manifold pressure in two places. Only one of them can change.
Cylinder 1
Leave it stock
The MAP sensor on cylinder 1 is the Emtron’s sync input. Replace it and you lose 720° sync: the engine won’t start.
Cylinder 2
Replace this one for boost
The manifold-pressure sensor on cylinder 2 (input AV3) is the one Emtron says to replace when you add a supercharger or turbo.
Flex fuel
Adding an ethanol sensor.
Emtron lays out a GM-style ethanol content sensor on the YXZ ECU’s expansion pins. Three wires:
Wiring
Three wires
Sensor pin 1 · power: 14 V, from ECU pin B1.
Sensor pin 2 · ground: ECU ground, pin A1 or A2.
Sensor pin 3 · signal: ECU pin B30, digital input 4.
Setup
In Emtune
Set the Ethanol Sensor Input Source to DI 4. The ECU decodes ethanol content and fuel temperature on its own (50 Hz reads 0% ethanol, 150 Hz reads 100%), and the ethanol settings open up under Tuning View › Engine Functions.
Ground it to the ECU ground (A1 or A2), never to the analog sensor 0 V reference. The ethanol sensor puts out a frequency, and frequency sensors don’t belong on the 0 V reference.
Gauges and expansion
CAN devices and the 0 V rule.
CAN bus 2
Add Emtron gauges and modules
CAN bus 2 is reserved for Emtron devices: lambda, thermocouple and input expanders and the Emtron CAN gauge. CAN 2 high is pin B13, CAN 2 low is pin B19; power splices from B1 and ground from A1/A2.
- Twisted pair for CAN high and low, about one twist every 40 mm.
- A 120 Ω resistor at each end of the bus. Emtron devices don’t have one built in.
- Keep stubs off the main bus under 0.3 m, and use as few connectors as you can.
Sensor 0 V reference
Pin B16 is special
B16 is the dedicated ground for low-current analog sensors such as pressure and temperature. Wire it straight to the sensor’s ground pin.
- Never connect B16 to the engine block or the ECU ground.
- Never put frequency sensors, such as an ethanol sensor, on it.
Spare inputs and outputs
What’s free
On the YXZ most channels are spoken for by the factory systems. Emtron leaves a user analog input, a user digital input (the ethanol or launch switch input) and two spare outputs, plus CAN bus 2 for anything more.
Logging
It records everything
Up to 32 MB of on-board logging at 1 to 500 Hz across more than 1,200 channels, a 4-channel oscilloscope, on-board barometric pressure and a 3-axis G sensor.
At a glance
The Emtron YXZ1000R ECU.
From Emtron’s datasheet.
6–22VOperating voltage; shuts down at 24 V
2×100MHZDual processors
32MBLogging memory
−30–85°CRecommended operating range
Download the Emtron datasheetPDF · 1.6 MB · © Emtron Australia. Pinouts, channel assignments and wiring diagrams are all in it.
Questions
Questions owners ask.
Do I have to rewire anything?
Not for a stock-harness install. The Emtron YXZ1000R ECU plugs into the factory harness. Wiring only comes into it when you add something, such as an ethanol sensor or a CAN gauge.
Which MAP sensor do I replace for boost?
The one on cylinder 2 (input AV3). Never the one on cylinder 1: the ECU uses it for engine sync, and without it the engine won’t start.
What do I tune it with?
Emtune, Emtron’s free Windows software, over the Ethernet tuning cable (Emtron part 553-15).
Where’s the ECU on a YXZ?
Under the center console cover. Slide the cover back and up to reach it.
Where do I get a calibration?
Send your build on the tune build sheet with Emtron as the ECU, and we’ll take it from there.
Planning an Emtron build?
Tell us the machine, the mods and the fuel. The shop answers by email, usually the same day.