Jaguar Electronic Fuel Injection Conversion

Many classic Jaguar owners love the character of SU carburetors, but few enjoy dealing with cold-start issues, fuel delivery inconsistencies, vapor lock, or constant tuning adjustments. A professionally installed Jaguar EFI Conversion provides modern reliability and drivability while preserving the character of the car you love.

At It's Alive Automotive, we install and tune Jenvey throttle body systems paired with Emerald engine management for Jaguar E-Types, XK120s, XK140s, XK150s, and other classic Jaguar models. The result is a more enjoyable driving experience, improved throttle response, and consistent performance in a wide range of conditions.

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Why Consider Electronic Fuel Injection?

Electronic fuel injection eliminates many of the frustrations commonly associated with vintage carbureted systems. Modern EFI continuously monitors engine operating conditions and adjusts fuel delivery accordingly, helping your Jaguar start easier, idle smoother, and respond more consistently.

For owners seeking a Jaguar performance upgrade that can be enjoyed every time they drive, EFI offers a compelling combination of reliability, drivability, and modern engine management. Owners often pursue EFI conversions to reduce maintenance and gain greater confidence during long drives and changing weather conditions.

Modern Technology. Classic Appearance.

One of the biggest concerns owners have about EFI is preserving the appearance of the engine bay. Jenvey throttle body systems are specifically designed to maintain a period-correct performance look while incorporating modern fuel injection technology.

The conversion remains fully reversible and allows many owners to enjoy modern drivability without compromising the visual character of their Jaguar.

Features of the Jenvey & Emerald EFI System

The Jenvey & Emerald EFI package combines individual throttle body performance with the advanced control of the Emerald Electronic Control Unit (ECU). Together, they provide precise fuel delivery, ignition control, and tuning flexibility while maintaining the character of a classic Jaguar.

Individual throttle body design
Modern fuel and spark management
Programmable Emerald ECU
Improved cold and hot starting
Enhanced throttle response
Professional dyno calibration
Fully reversible installation

Every installation is tailored to the vehicle and professionally tuned to optimize drivability and performance.

Benefits You'll Notice Every Time You Drive

A properly calibrated Jaguar EFI Conversion delivers performance improvements that become apparent every time you turn the key.

Improved cold-start behavior
Smoother idle quality
More responsive throttle input
Consistent fuel delivery
Reduced carburetor maintenance
Greater confidence in varying temperatures
Enhanced drivability in traffic and touring situations

Choose the System That Fits Your Jaguar

Two EFI Systems. One Goal.

Every Jaguar owner has a different vision for their car. Some prefer the unmistakable look and performance of individual throttle bodies, while others want a more period-correct engine bay. As an authorized Jenvey dealer, It's Alive Automotive offers both the Jenvey Individual Throttle Body (ITB) and Jenvey Heritage systems. Each delivers the reliability, drivability, and precision of modern electronic fuel injection while allowing you to choose the appearance and character that best complements your Jaguar.

Jenvey Individual Throttle Bodies (ITBs)

For enthusiasts seeking the ultimate Jaguar EFI performance upgrade, the ITB system delivers exceptional throttle response, precise engine control, and an unmistakable motorsport-inspired appearance. The lightweight, compact throttle bodies are also well suited for tighter engine compartments, including the Jaguar XK120, XK140, and XK150, making installation cleaner and more efficient.

Jenvey Heritage

The Jenvey Heritage system is designed to capture the appearance of period performance carburetors while incorporating modern electronic fuel injection. It's an excellent choice for owners who want improved reliability and drivability while maintaining a classic, period-correct engine bay aesthetic.

Both systems are paired with the Emerald Electronic Control Unit (ECU) and are professionally installed, calibrated, and dyno tuned on our in-house Mustang chassis dynamometer to deliver reliable performance and an exceptional driving experience.

Jaguar EFI Performance Upgrade

Is Your Jaguar Ready for EFI?

Why Upgrade with It's Alive Automotive?

It's Alive Automotive is a certified EFI installer, an authorized Jenvey dealer, and maintains strong working relationships with both Jenvey and Emerald. Our team combines decades of Jaguar restoration experience with modern performance expertise, ensuring every EFI conversion is professionally installed, calibrated, and tested.

Unlike many shops, we perform in-house tuning using our Mustang chassis dynamometer, allowing us to optimize fuel and ignition maps under real-world load conditions. This results in an EFI conversion that delivers the reliability, drivability, and performance today's classic Jaguar owners expect.

Whether you're looking for improved reliability, better drivability, or a complete Jaguar performance package, our team is here to help. We can also advise on complementary upgrades such as a 5-Speed Manual Conversion, ClassicFabs Exhaust, or our Performance Trifecta to create a driving experience tailored to your goals.

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