DC2000 – Installation Manual 21
HHO Plus, Alternative Energies, Lta – Travessa das Serras 33, Vieira de Leiria, Portugal – Tel. 00351244697116 – Email: info@hhhoplusgas.com
2.2 Diesel Engines – Electronic Injection (1998-2003)
Fuel savings: 20 – 30%
Requirements: Right amount of HHO inside the engine. Reset the ECU.
Optional: MAF/MAP Sensor Enhancer to increase fuel savings
2.3. Diesel Engines – Electronic Injection (2003-2012)
Option 1
Fuel savings: 20 – 30%
Requirements: Right amount of HHO inside the engine. Reset the ECU. Install the lambda sensor extender.
Isolate the body of the lambda sensors;
Optional: MAF/MAP Sensor Enhancer to increase fuel savings
Option 2
Fuel savings: 25 – 35%
Requirements: Right amount of HHO inside the engine. Reset the ECU. Install the HEC Chip
We advise the installation of the HEC Chip whenever it is possible because it will maximize the results.
Please consult us for full details (info@hhoplusgas.com) or go to our store.
Components of the electronic injection
An Electronic Control Unit (ECU) controls the internal combustion operation of the engine. The simplest
ECUs only control the quantity of fuel injected into each cylinder per engine cycle. The more advanced ECUs
also control the ignition timing, variable valve timing (VVT), the level of boost maintained by the
turbocharger, and other engine peripherals.
ECUs determine the quantity of fuel, ignition timing, and other parameters by monitoring the engine through
sensors. In cars the most important sensors are: MAP/MAP sensor and Lambda sensors
MAP/MAF sensor
For an engine with electronic fuel injection, the ECU will set the quantity of fuel to inject based on a number
of parameters. For example: If the accelerator pedal is pressed further down, this will open the throttle body
and allow more air to be pulled into the engine. The ECU will inject more fuel according to how much air is
passing into the engine.
The Manifold Absolute Pressure (MAP) or the Mass Air Flow (MAF) are the two sensors normally found in cars
responsible for giving information to the computer (ECU - Environmental Control Unit) regarding the quantity
of air being aspirated by the engine and, in this way, be able to calculate the quantity of fuel needed to be
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