Availability
Summit Racing™ introduces its MAX-efi 500 Fuel Injector System, the most efficient way to convert your carbureted engine to premier EFI performance. These self-tuning throttle body units bolt directly to most 4-barrel manifolds; then, through their wideband oxygen sensor, the systems continually adjust fuel delivery to provide the optimum air/fuel ratio under all climate and altitude conditions. MAX-efi will support up to 500 hp, and the self-learning ECU allows for easy tuning. With safety in mind, these systems are also designed with a self-adjusting "limp home" mode to protect your engine if a sensor fails. In addition, they include a data-logging feature to track the system while it's running to ensure optimal performance. Other features of the Summit Racing™ MAX-efi 500 Fuel Injector Systems: * Powered by the most advanced self-learning technology available * 4-injector system is capable of supporting stock to 500 hp engines * High-flow aluminum throttle body with four 45mm diameter throttle bores * OE-quality wideband 02 sensor and TPS sensor included * Color touch screen hand-held controller * Billet aluminum anodized fuel rails * Compact external ECU for easy mounting * OE-style harness is clearly marked for easy installation and durability in extreme conditions * All sensors except the wideband 02 sensor and coolant temp sensor are integrated on the unit * Uses commonly available sensors for easy replacement if necessary * System uses a Temperature Manifold Absolute Pressure (TMAP) sensor instead of a MAP sensor, reading both air pressure and temperature * Fits square bore or spread bore intake manifolds. (Spread bore manifold requires an inexpensive plate to avoid leaks. See SUM-G1420) * Works with original carb-type distributor, factory-style throttle linkage, and most 4-barrel intake manifolds
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$899.99
Summit Racing™ billet throttle bodies are designed with larger openings (92mm or 102mm) to improve throttle response and provide maximum airflow. They're precision CNC-machined from billet aluminum and available in your choice of natural or black anodized finishes. Feed your LS engine the air it needs—and unleash its hidden horsepower! Order the Summit Racing™ replacement throttle body recommended for your vehicle.
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$169.99
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$180.99
Summit Racing™ drive-by-wire throttle bodies are a perfect upgrade for any late model LS/LSX engine. They're precision-machined from 6061 billet aluminum and come in multiple finishes. The unique blade design allows these throttle bodies to bolt right up to any factory or aftermarket LS/LSX intake manifold—and they utilize the original late model GM 6-pin connector. Their larger bore size allows for increased airflow, which results in fast, smooth acceleration across all RPM ranges. The proprietary electronics and stepper motor allow these throttle bodies to be used on both naturally aspirated and forced induction engines. Tuning is required for installation.
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$601.99
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$621.99
Our lightweight Summit Racing™ fuel rail kits fit like stock, but deliver the increased fuel volume that your LS1 needs for maximum performance. The 3/4 in. i.d. rails are precision CNC-machined from high-strength aluminum with a great looking, black anodized finish. The kits include fittings with Viton® O-rings for a superior seal, mounting brackets, and stainless steel hardware.
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$104.99
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$114.99
Summit Racing™ ignition coil wiring harnesses can facilitate a hassle-free connection of the coil to the wiring harness. That means no more cutting or splicing wires! These adapter harnesses are made from quality material for lasting durability—and they include all the necessary connectors to provide a fast, effortless installation. Order the model recommended for your application.
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$137.99
Summit Racing™ throttle cable brackets solve common installation headaches, look good doing it, and won't break the bank. These stainless steel throttle cable brackets are available in designs and finishes to assure proper fit, form, and function. The throttle cable brackets mount to the carburetor base, and include a return spring and installation hardware.
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$38.99
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$45.99
Summit Racing™ Max EFI LS 750 fuel injection systems are efficient, self-tuning kits for your LS engine. These multi-port systems combine an aluminum intake manifold available in two profiles and port sizes, transmission control, and either a 92 or 102mm billet aluminum throttle body. The systems are available in two finishes and are timing control and power added compatible. Fire up the performance of your LS engine with our Summit Racing™ Max EFI LS 750 fuel injection systems. Select the kit with the specs and finish desired for your LS-based engine. Features: * 4.4 in. color touch screen hand-held controller * Multi-port fuel rails * 55 lbs./hr. injectors * Plug-and-play wiring harness * Calibration module * Oxygen sensor * MAP sensor * Tall or short manifold profile * Cathedral or rectangle port * 92mm or 102mm diameter throttle body * Black or natural finish
Not Yet Reviewed
$1,999.99
Summit Racing offers diesel fuel injectors for a wide range of vehicle and engine applications, from the 1990s and up. These OE-quality replacements help you obtain maximum fuel efficiency and power from your diesel engine. Order the model recommended for your vehicle.
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$195.99
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$307.99
Boost the versatility of your fuel injection wiring with Summit Racing™ EFI CAN splitters. Offered in different lengths, our easy-to-install Y-splitter harnesses plug into the CAN connector of your main harness then plug into any CAN device, such as a digital dash.
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$26.99
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$31.99
Summit Racing™ low-friction throttle cables provide high-quality in a push/pull design. Their strong solid construction features a PTFE lining with a Stainless Steel wire core and a polyethylene cable jacket. Able to be used in many ways, they are ideal as throttle, fuel shut off, or parachute release cables, and are available in a variety of lengths ranging from 24 in. to 240 in. Choose the length needed for your application.
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$47.99
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$77.99
Summit Racing™ fuel injector bungs feature an ideal design for do-it-yourself fabricators who make multi-port fuel injection manifolds and rely on The World's Speed Shop® for custom parts. These components feature high-quality material and can be welded or epoxied to single-plane, dual-plane, Tunnel Ram, or sheet metal-style intake manifolds. Order the Summit Racing Equipment® fuel injector bungs best suited for your application.
Not Yet Reviewed
$62.99
Summit Racing™ GM harness adapters allow the use of an LS2 throttle body on an LS1 vehicle. The wiring harnesses feature premium OEM connectors, terminals, locks, and seals to facilitate complete plug-and-play installation. All wiring is high-temperature automotive spec and is covered by stock-appearing split loom tubing.
Not Yet Reviewed
$47.99
Summit Racing™ high-pressure connector fuel feed pipes maintain the steady flow of high-pressure fuel from the fuel rail to the injector body. These direct replacement tubes are ideal for eliminating fuel leaks from the fuel rail to the injector, and preventing loss of engine power or mileage. They're constructed from stainless steel, quality-tested for a longer service life, and will restore proper function of your fuel injection system.
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$36.99
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$37.99
Our Summit Racing™ Pro LS fuel rails fit like stock, but deliver the increased fuel volume that your LS engine needs for maximum performance. These rails are CNC-machined from billet aluminum and topped off with a black anodized finish and laser engraved Summit Racing™ logo. They include the necessary hardware and fittings for installation. If you want excellent fuel delivery to your LS while maintaining a clean appearance, Summit Racing™ Pro LS fuel rails are the ideal choice.
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$323.99
On Sale
A properly fabricated intake manifold can produce significant gains in your engine's performance. Add one of our Summit Racing™ fabricated intake manifolds to your engine combination to make more power! Each of these stock/OEM deck engine block style intake manifolds is manufactured to exacting standards utilizing the latest CNC machining and fabricating equipment. Simply find and order a perfect fit for your specific make and model vehicle.
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$371.99
$271.99
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