All Documents

Installation Instructions

Index of Installation Instructions

Hydrogen Assist Systems

Hydrogen Assist Systems, or How Does HHO Work?

What Is A Dry Cell?

What Is A PWM (Pulse Width Modulator)? (New!)

How Much HHO Should I Use?

HHO System Debug Checklist

Important: Minimum Safety Circuitry for HHO Installs

What Is Brown's Gas?

Bubblers

HHO Production Videos

HHO Volume Test: Pop Bottle Test

The Basics of Sensors and Electronics

Oxygen Sensor Adjustment - General Information

EFIE: Electronic Fuel Injection Enhancer, Described

What Kind of Sensors Do I Have?

Which EFIE Should I Buy?

Handling Your Vehicle's Electronics To Work With HHO

Oxygen Sensors, Types of

Wide Band Oxygen Sensors

The New Digital EFIE: How It Works

New EFIE Product Lineup

What Do I Need To Know About My Oxygen Sensor?

Miscellaneous

Abbreviations

FAQ: Frequently Asked Questions

A Simple MAF/MAP Enhancer

KOH Freezing Temperatures

Tuning For Mileage

Sensor Information Request Form

References Validating the Technology of HHO

Affiliate Links Instructions

International HHO Institute