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    Ultimate LS 1000 HP EFI System With Long Runner Cathedral Port

    The Ultimate LS1/LS2/LS6 1000 HP Intake Manifold Kit with 102mm throttle body and trans control are a complete self-tuning induction systems 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 “Craigslist 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: 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 1000 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
      5.3 L / 325 c.i. L33, L59, LM4, LM7
      5.7 L / 346 c.i. LS1, LS6
      6.0 L / 364 c.i. LQ4, LQ9, LS2
    • Intake manifold is 6.5 inches tall.
    • 102mm 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.
    • Parts required, not included:

    Optional, not included: throttle cable mounting bracket (FiTech part number 70063)
    Not legal for use on pollution controlled vehicles: FiTech 's Ultimate LS System is not CARB approved for use on emission controlled vehicles. This system is designed to control the EFI and ignition on LS based engines being retrofit into older vehicles that do not require emission controls.


    • Low profile, 102mm inlet, Fabricated 3mm thick aluminum sheet metal TIG welded intake manifold with 1500-6500 rpm power-band up to 1000 HP to the flywheel and contains a 3 BAR MAP sensor for power adder applications that supports up to 30 PSI of boost.
    • 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.
    • Dual Bosch wide band with dual trim control (Self-learning).
    • 3 BAR MAP sensor automatically detects up to 30 psi boost.
    • Stainless O2 Sensor bung (clamp or weld on).
    • 24X and 58X crank and cam compatible.
    • Two programmable fan control outputs.
    • 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).
    • 80 lb/hr flow-matched injectors.
    • Fuel pump relay output.
    • Custom wire harness (uses factory coil pack sub harness).
    • Knock sensor control.
    • Transmission control feature is suitable for 4L60, 4L65, 4L80 or 4L85 GM transmissions.

    Kit Contents

    • 102mm billet aluminum throttle body.
    • Hand-held controller with color touch screen and cable.
    • Windshield mount for touch screen controller.
    • LS ECU.
    • 80 lb/hr Injectors.
    • High volume fuel rails.

    Fuel rail contents

    • Mounting bracket.
    • -6 AN fittings.
    • Rails.
    • Screws to mount brackets.
    • AN fittings and fuel crossover.
    • Fabricated 3mm thick aluminum sheet metal TIG welded intake manifold and bolts.
    • Plug and play primary wiring harness.
    • 3 BAR MAP Sensor.
    • Throttle Position Sensor.
    • Idle Air Control Motor.
    • Idle Air Temperature Sensor.
    • Dual Wide band O2 Sensors.
    • Stainless Oxygen Sensor bung kit (Clamp or weld on).
    • Two programmable fan control outputs.
    • Parts required, not included:

    Optional, not included:throttle cable mounting bracket (FiTech part number 70063).

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.