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Ultimate LS EFI Fuel Injection System LS Torque Plus Cathedral 600 HP
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- Ultimate LS EFI Fuel Injection System
- LS Torque Plus Cathedral
- Without Transmission Control
- 600 HP
The Ultimate LS Torque Plus Cathedral Port Composite 600HP intake manifold kit with cable operated 92mm throttle body are self-tuning systems for LS engines designed for the do-it-yourself hot rodder to the professional EFI tuner!. This intake manifold is an O.E. replacement quality reinforced plastic composite material combined with our top of the line Ultimate LS ECU. This self-learning dual wide-band Ultimate LS ECU replaces the OEM computer and harness. This new design gives your engine bay the factory O.E. look while giving you all the great features of our self-learning ECU, maximum tunability, and ease of installation. They’re simple to configure with the supplied color touch screen hand-held controller and can be used to monitor in real time or can be disconnected when the configuration is completed. It’s never been easier to swap an LS into practically anything you want with our stand-alone Ultimate LS kits. Suitable for that junkyard 5.3 to a stroker 427, we have you covered! Check out the list of features and you will wonder why it’s never been so simple to ditch that old factory hardware. • Application: Intake manifold will fit Cathedral Port LS1/LS2/LS6 heads.Small Block V8 GEN. III/IV LS-based Chevrolet street and performance engines with a 1500-6500 rpm power-band up to 600 HP to the flywheel and contains a 3 BAR MAP sensor for power adder applications that supports up to 30 PSI of boost. 4.8 L / 293 c.i. LR4, LS1 LS2 LS6, V8 Camaro/Corvette 5.3 L / 325 c.i. L33, L59, LM4, LM7, V8 Camaro/Corvette 5.7 L / 346 c.i. LS1, LS6, Cadillac CTS V, Pontiac/GTO/Trailblazer SS/Firebird/Trans-Am, SSR, Corvette 6.0 L / 364 c.i. LQ4, LQ9, LS2, V8 Camaro/Corvette• Intake manifold height is 8 inches.• 92mm high flow cable operated throttle body.• Throttle body will clear most stock truck accessories depending on the type of water pump, if there is truck water pump accessory clearance interference you will need to get a new water pump bracket. Water pump may need to be clearanced. • Optional, not included: throttle cable mounting bracket (FiTech part number 70063)
The Ultimate Fuel Injection System for GM LS-Based Engines
FiTech's Ultimate LS EFI Induction Systems are self-tuning electronic fuel injection systems for LS-based engines, designed for the do-it-yourself hot-rodder or professional tuner. These systems are a complete kit with everything needed to complete the induction system of the popular GM LS engine.
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Transform your LS-powered build with the next evolution in fuel delivery technology — the FiTech Ultimate LS EFI Induction Systems. Designed for everyone from weekend builders to seasoned performance tuners, these systems combine cutting-edge EFI control with bolt-on convenience, giving your engine smoother power delivery, improved fuel economy, and rock-solid reliability. Whether you’re daily driving, cruising, or competing on the strip, the performance and versatility of this system are clear from the first start.
The heart of the upgrade is the fitech ultimate ls controller, a fully programmable engine management system optimized specifically for LS architectures. Its adaptive fuel and spark control automatically adjusts to changes in conditions and power adders, so you spend less time dialing in and more time enjoying responsive throttle and confident acceleration. With on-screen tuning and built-in data logging capability, you can fine-tune parameters easily without external gadgets or guesswork.
One of the biggest advantages of an efi for ls engine is seamless drivability in every situation. Cold starts become reliable, idle transitions smooth, and throttle response sharp — eliminating common carburetor headaches like stumble or hesitation. For late-model swaps and retrofits especially, this system brings modern control to older chassis without compromising character.
Installation is straightforward with quality hardware and detailed instructions included, making it achievable for experienced DIYers and professional shops alike. From street cruisers to high-output performance builds, this ls efi kit gives you a complete, dependable induction solution that enhances power, efficiency, and overall engine confidence — a smart upgrade for any LS enthusiast.
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