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Example images of throttle body and multi-port EFI kits

If you’re tired of messing with jets and needles, replacing your carburetor with a Fuel Injection System has never been easier. If you make the right choices, the system will work great with engine you have today. It can also support your planned upgrades.

Follow the links below to learn more about your options.

Horsepower Rating

EFI kits are sized by the maximum horsepower they can support with gasoline. They will work across a wide horsepower range.

Injection Style

Throttle body injection offers the easiest installation and Wiring. It can also work with your existing intake manifold and air filter. Multi-port injection gives you the most accurate fuel delivery, but at a higher cost.

Tuning Options

Most kits are self-tuning, but they also have powerful user-tuning tools. You can even have different settings for the track and the street.

Metering Style

Most kits are Alpha-N, Speed Density, or a combination of the two. Alpha-N is the simplest and requires tuning to be done manually. Speed Density uses more sensors and allows the system to self-tune.

Ignition Timing Control

Many EFI kits are capable of timing control when used with the right ignition system. If this is something you want to do now or later, you’ll need a compatible kit from the start.

Power Adders and/or E85

Many EFI kits work with nitrous, boost and/or E85. If you want to use any of these now or in the future, it is best to buy a compatible kit from the beginning.

Fuel System Requirements

If you’re upgrading your carburetor to EFI, your fuel system probably needs upgraded too. Some kits come with a Fuel Pump Included. However, any fuel pump that provides the right pressure and volume can be used. Follow the links below to learn more: