Description
FiTech Ultimate LS 750 HP EFI System with Short Cathedral Intake
Self-tuning multi-port electronic fuel injection system designed for cathedral-port GM LS1, LS2, LS6, 4.8L, 5.3L, and 6.0L engines up to 750 HP.
Product Overview
The FiTech Ultimate LS EFI Induction System (PN 70003) is a complete, self-learning multi-port fuel injection package engineered to convert cathedral-port GM LS engines up to 750 HP. Designed to replace restrictive factory intake manifolds and tedious wiring harnesses, this kit includes a high-flow 102mm billet throttle body, a 6.5″ tall low-profile fabricated sheet metal intake, and 55 lb/hr injectors for instant throttle response and high-RPM airflow.
Equipped with a self-learning ECU and full-color touchscreen handheld tuner, the FiTech system automatically calibrates air/fuel ratios on the fly without requiring complex laptop tuning. Featuring a built-in 3 BAR MAP sensor capable of handling up to 30 PSI of boost, sequential spark and fuel control, and compatibility with both 24X and 58X crank/cam reluctor signals, it offers maximum performance and versatility for street, strip, or track builds.
Key Features
- ☑ Designed for cathedral port GM LS1, LS2, LS6, 4.8L, 5.3L, and 6.0L engines up to 750 HP
- ☑ Low-profile 6.5″ tall 3mm fabricated sheet metal aluminum intake manifold with short runners and 102mm inlet
- ☑ High-flow 102mm cable-operated billet aluminum throttle body mounted at a 7-degree angle
- ☑ Multi-port fuel injection with 55 lb/hr flow-matched injectors and billet fuel rails with AN fittings
- ☑ Self-learning ECU with color touchscreen handheld controller for easy, laptop-free tuning
- ☑ Integrated 3 BAR MAP sensor supporting boost applications up to 30 PSI
- ☑ Universal reluctor compatibility supporting both 24X and 58X crank and cam timing signals
Technical Specifications
| Brand | FiTech Fuel Injection |
|---|---|
| MPN | 70003 |
| Engine Compatibility | GM LS Small Block Gen III/IV (Cathedral Port) |
| Horsepower Rating | Up to 750 HP |
| Powerband | 1,500 – 6,500 RPM |
| Intake Style | Fabricated Sheet Metal Aluminum (6.5″ Height) |
| Throttle Body Size | 102mm Cable-Operated Billet Aluminum |
| Injector Size | 55 lbs/hr Flow-Matched |
| Boost Support | Integrated 3 BAR MAP Sensor (up to 30 PSI) |
| Crank/Cam Signal | 24X and 58X Compatible |
| Transmission Control | No (Engine Management Only) |
What’s Included in the Box
- • Fabricated Sheet Metal Intake Manifold (Cathedral Port)
- • 102mm Billet Aluminum Throttle Body
- • FiTech LS Self-Learning ECU & Plug-and-Play Wiring Harness
- • Handheld Color Touchscreen Controller with Cable & Windshield Mount
- • Set of (8) 55 lb/hr Fuel Injectors
- • High-Volume Billet Fuel Rails & AN Crossover Line
- • 3 BAR MAP Sensor, TPS Sensor, IAC Motor & IAT Sensor
- • Dual Bosch Wideband O2 Sensors & Stainless Oxygen Sensor Bung Kit
As an authorized FiTech supplier in the UK, JP Racing delivers genuine high-performance motorsport hardware backed by expert technical advice and fast UK dispatch to keep your vehicle performing at its best.
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