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Technical data and additional information read more: 

 Thousands swear by our time tested FS1. After the 4.3 patch, we've come close to the limitations of the FS1's hardware. So we've taken your feedback and suggestions, along with the powerful VP12 hardware, to build the new FS3 Fuel Saver. This model is capable of producing higher and more consistent gains than the FS1.

Please read this description carefully before making a purchase.

The FS3 is our newest performance chip, based on the powerful VP12.

This model has been designed to tune your ECU to produce serious gains in fuel efficiency with no loss of power.

Like all of our Chips the FS3 is dynamic - which means the FS3 will consider oxygen levels in the exhaust, along with engine speed and load, intake air temperature and volume, and many other variables to determine the most efficient fuel delivery rate and timing at up to 256 separate load points.

The FS3 is a vehicle specific, custom programmed 20MHz Microcontroller. It utilizes its high speed serial input/output to communicate directly with the ECU through the OBD-II port.

Recommended modifications :
- K&N or equivalent non-restrictive intake

The FS3 is compatible with factory equipped Turbo/Superchargers, diesel engines, Flex-Fuel, & HHO supplement systems.
It is NOT compatible with hybrid engine options, propane, or natural-gas.


Is this the right one for my engine?

The FS3 has room for up to 8 performance maps, which we use to cover different engine options for a particular vehicle. For example, the 1999 Ford Mustang Smart Chip will be compatible with both the 3.8L V6 and the 4.6L V8. The FS3 will read the first few bytes of data from your ECU during calibration to determine which map to use.


What's the difference between the FS2-HHO Ed. and the FS3?

The FS3 uses the same maps as the FS2, but with HHO routines removed. The FS3 is for those with standard vehicles not equipped with HHO. If you are using HHO, or intend to install an aftermarket HHO generator in the future, we recommend the FS2-HHO Ed.

Which Smart  Chip do I need?

HEC CHIP Products Comparison:
Fuel Efficiency

Smart Chip Performance 


Increase during casual driving.

Smart Chip Fuel Saver


No loss in performance.


No loss in performance.
Aggressive (HHO Enhanced)

How to Install?
Simply locate the OBD-II port, connect the Chip to four wires found BEHIND the port, and you're done. Bring the vehicle up to operating temperature and then press the reset button to start saving fuel.

Additional Information
Our HEC Chips do not work with hybrids, propane nor natural gas vehicles. Each unit is ready to install per the provided instructions.
The HEC is compatible with factory equipped Turbo/Superchargers, diesel engines, Flex-Fuel, & HHO generator supplement systems.
This dynamic NEW HEC chip has been engineered specifically for use on vehicles using HHO generators to save even more fuel and increase power response!

  • Eliminates the need for any controllers;
  • Easy to hook up - comes with quick connectors;  
  • No adjustments needed, automatically sets itself;
  • No multi-meter needed - nothing to read or adjust; 
  • Does not touch or modify any existing sensors;
  • Attaches to wiring harness in back of OBD2 port.
  • Installation manual in english, french, german, italian and spanish 
    Free download HHO kit generator manuals & videos 

Simple to install, easy-to-follow instructions; connects to the back of the OBD2 (OBD-II)data link connector with only 4 wires. 

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Y 15-18% Fuel Save Petrol, Diesel Profi FS3 ECO OBD2 Without HHO KIT, 4 wires

  • Brand:
  • Product Code: FS3 ECO OBD2 4W
  • Availability: Out Of Stock
  • £88.11 Special

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