Frequently Asked Questions

This page is still under development. The most common questions that I get asked are here, and from time to time I will add to it. The goal of this page is to ensure that you get the information that you need without having to wait for an email or forum response.

I have a [make/model/year] car and have added a [brand/model] electrolyser. What kind of EFIE do I need? The first thing to do is to read What Do I Need To Know About My Oxygen Sensor?. This will help you obtain the information you need to answer this question. After that, you will need to order a Single or Dual model depending on whether you need to treat one or two sensors. There are 3 versions of each, and I always recommend the Deluxe version as it was the original design that included all of the functionality that I wanted you to have. For more information see the next question.

What is the difference between your different EFIE models? This is covered in detail in New EFIE Product Lineup.

Is it easy to install an EFIE? How do you do it? The installation instructions for our EFIE models are available online. Please see EFIE Installation Instructions.

How can I get support for my EFIE? Your first action would be to review this FAQ to see if your question is answered here. You would probably also want to search at our support forum at www.fuelsaver-mpg.com to see if your question has come up before. These are the quickest ways to get your question resolved. However, if these do not get the job done, you can post your question in the EFIE Support section at the forum, or contact support directly.

What is the difference between your different EFIE models? This is covered in detail in New EFIE Product Lineup.

What is the difference between your different EFIE models? This is covered in detail in New EFIE Product Lineup.

My EFIE didn't come with instructions. How do I install it? The instructions are posted online and can be found here: EFIE Installation Instructions.