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Vehicle Info Needed70006 Ultimate LS EFI Induction System LS1/LS2/LS6 500 HP with Long Runner Cathedral Intake
Lowest Price GuaranteeThe Ultimate Tall LS1/LS2/LS6 500HP Intake Manifold Kit with 92 mm Throttle Body is a complete self-tuning induction system for LS engines designed for the do-it-yourself hot rodder to the professional EFI tuner! This system is ready to go with everything needed to complete the induction system of your LS engine and get you on the road easily and faster than any system on the market today. Forget sourcing mismatched parts and cutting and splicing old harnesses and re-flashed ECU’s from “Craigs List” tuners. FiTech’s Ultimate EFI is a complete Kit. 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 or top off that fresh long block. We have taken the work out of getting your new or pull-out LS up and running in a flash. That’s why we call this intake manifold kit the Ultimate EFI.
Application:
- The 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 500 HP to the flywheel
- 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
Features:
- Intake manifold height is 9 inches
- 92mm high flow cable operated throttle body sits at 7 degrees
- Throttle body will clear any 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
- Optional, not included: throttle cable mounting bracket FiTech part number 70063 (sold separately)
- Tall, 92mm inlet, Fabricated 3mm thick aluminum sheet metal TIG welded intake manifold with 1500-6500 rpm power-band up to 500 HP to the flywheel
- Billet Fuel rails with AN fittings and fuel crossover
- Self-learning ECU with touch screen controller for easy setup and configuration
- Sequential fuel and spark control with individual cylinder trim
- Bosch wide band controlled (Self-learning)
- Stainless O2 Sensor bung (clamp or weld-on)
- 24X and 58X crank and cam compatible
- TPS - IAC Sensor
- Tach output driver for most tachometers (5V)
- Output driver for most speedometers
- Compatible with car and truck coils
- On-the-fly programmable target AFR and timing (if desired)
- 36 lb/hr flow-matched injectors.
- Fuel pump relay output
- Custom wire harness (uses factory coil pack sub harness).
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
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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