Build it Yourself! Easy to add upgrades as per the EFIE Manual (sold separately).
This circuit board and components are identical to our fully assembled EFIE Device.
The EFIE Kit Assembly, Installation and Operation instructions do not come with the kit. They are available as a download from the EFIE Resources.
You do get automatic access privileges to the EFIE resources by buying an EFIE Device or this Kit. You log into the EFIE Resources through your account.
The EFIE connects directly to your oxygen sensor and is compatible with ALL oxygen sensors. You need one on each oxygen sensor mounted before the Catalytic Converter.
The EFIE allows you to retain all your power and performance while taking advantage of increased mileage. No matter what fuel saver device or method you use on your fuel injected vehicle, you’ll need the EFIE to unleash the full potential of the fuel saver.
The EFIE alone can save 5% – 10% on your fuel bill, simply by ‘leaning’ your fuel mixture. We do not consider it as a fuel saver on it’s own. It is designed as an ASSIST for fuel savers.