Description
FiTech Ultimate LS 500HP EFI System with Short LS3/L92 Intake & Transmission Control (Part No: 70012)
Transform your LS-based project with the ultimate bolt-on electronic fuel injection upgrade. The FiTech Ultimate LS 500HP EFI Kit (70012) is a comprehensive, self-tuning induction system engineered for both DIY hot rodders and professional EFI tuners. Whether you are dropping a junkyard pull-out into a dedicated drift car, prepping a custom engine build for the drag strip, or completing a classic restoration, this kit provides everything you need to ditch outdated factory hardware, mismatched parts, and complex wiring harnesses.
Complete Self-Learning EFI for LS3/L92 Engines
Designed specifically for rectangular port LS3 and L92 heads, this setup is rated to support up to a robust 500 horsepower at the flywheel. The kit centres around a fabricated 3mm thick TIG-welded aluminium sheet metal intake manifold, finished in a sleek black anodised coating. Providing excellent bonnet clearance for tighter engine bays, it is paired with a precision-cast 92mm throttle body for optimal airflow and crisp throttle response.
Built-in Electronic Transmission Control
Take total control of your drivetrain. This kit includes integrated electronic transmission management tailored for GM electronically controlled automatic gearboxes. The Ultimate LS ECU allows you to effortlessly dial in shift points, shift firmness, and downshift mapping. It is fully compatible with GM 4L60, 4L65, 4L80, and 4L85 transmissions. If you are running a manual or non-electronic gearbox, simply leave the sub-harness disconnected—it is entirely versatile.
Precision Fuel Delivery and Control
Fuel delivery is handled seamlessly by high-flow 36 lb/hr matched injectors and billet aluminium fuel rails, ensuring your engine runs flawlessly. The system is also compatible with boost and nitrous power adders, offering wide flexibility for high-performance applications.
Key Features & Specifications:
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Engine Compatibility: Fits LS3 and L92 blocks with Rectangular Port heads.
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Throttle Body: High-flowing 92mm cast aluminium cable-operated throttle body.
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Intake Manifold: 3mm thick fabricated aluminium, TIG-welded, with a stealthy black anodised finish.
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ECU & Tuning: Self-learning ECU featuring sequential fuel and spark control. Includes a full-colour touch screen controller with a windscreen mount for easy on-the-fly tuning.
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Sensors Included: Wideband O2 sensor (with clamp/weld-on bung), MAP, TPS, IAC, and IAT sensors.
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Harness: Custom plug-and-play primary wiring harness.
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Extra Outputs: Programmable electric cooling fan controls, speedometer output, and fuel pump relay output.
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Manufacturer’s Warranty: 3 years, with full technical support when purchased from JP Racing as an approved distributor.
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Part Number: 70012
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Installation: Click to Download
Fuel Pressure Regulators
This unit will require an uprated Fuel Pressure Regulator to meet the fuel requirements of your newly uprated Ultimate LS Intake EFI system. Fitech offer the following:
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Fitech Go Fuel “Tight Fit”, No Gauge: #54000 – supports up to 1000HP and adjustable between 30 – 70 PSI. Includes 2x -6 ORB ports plus 1x vacuum/boost port.
- Fitech Go Fuel “Tight Fit”, Includes Gauge: #54001 – supports up to 1000HP and adjustable between 30 – 70 PSI. Includes 2x -6 ORB ports plus 1x vacuum/boost port.
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Fitech Go Fuel “High Horsepower”, Includes Gauge: #54002 – supports up to 2000HP and adjustable between 30 – 70 PSI. Includes 4x -6 ORB ports plus 1x vacuum/boost port.
Take the headache out of your LS swap and maximise your horsepower with the FiTech 70012 Ultimate LS EFI Kit. With its self-learning technology and complete hardware package, getting your engine roaring to life has never been simpler.
UK Road Legal Emissions Statement
This product is sold as a “racing” product for off-road / track-only vehicles. This is legal for sale and use on vehicles not subject to modern metered MOT emissions controls.
The following vehicles are generally subject to lenient or uncontrolled emissions standards in the UK:
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Vehicles first used before 1 August 1975: These are subject to a visual smoke test only, with no metered gas limits.
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Vehicles first used before 1 August 1992: These are not legally required to be fitted with a catalytic converter and are subject to looser Carbon Monoxide (CO) and Hydrocarbon (HC) limits.
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Dedicated Track or Off-Road Vehicles: Vehicles not registered for use on public highways.
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Historic Vehicles: Vehicles over 40 years old that have retained their MOT exemption status (note: a modern LS3/L92 engine swap may be classed as a “substantial change,” requiring the vehicle to undergo standard MOT testing based on its original age bracket).
WARNING: It may be an offence to install this part on an emissions-controlled vehicle if it increases emissions beyond its original manufacturing standard or causes it to fail an MOT.
The following vehicles are considered strictly Emissions Controlled:
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Vehicles first used on or after 1 August 1992: These vehicles must generally retain an operational catalytic converter and pass strict, metered Basic and Advanced Emissions Tests during the MOT.
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Post-2014 Vehicles: Vehicles subject to even stricter Euro 6 emissions standards.
Important Note on Engine Swaps in the UK
If you are installing this LS3/L92 package into an older vehicle, UK DVLA/MOT guidelines dictate that the vehicle will be tested to the emissions standard of either the engine’s age or the vehicle’s age, whichever is older. Therefore, installing this modern engine into a pre-1992 chassis means the car only needs to meet the less stringent pre-1992 limits, making this aftermarket kit highly likely to pass an MOT in a classic car application.
Ultimately, while this statement accurately reflects standard UK MOT and DVLA guidelines regarding engine modifications, automotive laws can be nuanced (especially regarding engine swaps). Users should consult an MOT testing station or the DVLA for their specific build.
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