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Howell Engine Developments, Inc. :: GM LS-Series Products

Get wired with the Howell EFI harness and controller for GM LS series engines. The newest engine's from Chevrolet offer power, performance, and the latest technology, and have become a wildly popular choice for hobbyist and builders. Bolting these engines into your favorite street rod, muscle car or off-road vehicle may be easy, but many owners are reluctant to tackle the complexities of wiring.
The key to a straightforward EFI Installation on these Bowtie engines is a high quality custom harness from Howell. These engine specific harnesses feature all the correct connectors to make hooking up the electronic engine and transmission controls as easy as plugging in the required connectors, even on the mighty LS7. In fact, only four bare wire hook-ups are required. And with every connector clearly labeled there is no need to go searching for the right plug.
Howell EFI systems are as sophisticated as they are easy to install, providing fully functioning fly-by-wire or cable throttle control, and engine diagnostic capabilities right down to standard GM code output. An industry standard diagnostic port and check engine light are pre-wired into every system, making it compatible with all Chevrolet dealer and aftermarket diagnostic tools. The compact engine controller can be placed in a variety of locations and can be wired up in seconds.
Howell harnesses utilize GM/Packard high temperature wire, original equipment Packard Weatherpack connectors, and high temperature shielding to ensure the highest standard of reliability and a clean look under the hood.
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