GM LS1, LS2, LS6 - Individual Throttle Body Kit (ITB) Intake - Cathedral Port LS Manifold

ITB Intake Manifold Kit for all Gen 3 & Gen 4 LS Engines with Cathedral Port Heads. Fits LS1, LS2, LS6, LM4, LM7, LQ4, LQ9, LY2, LY5 etc. Also known as Velocity Stacks, Downdraft, ITB or Trumpets. Performance 50+WHP (~60-65HP AT FLYWHEEL) INCREASE OF OEM INTAKE SMOOTH LOW-RPM DRIVABILITY - SOME CUSTOMERS HAVE BEEN DAILY DRIVING FOR 3 YEARS+ 7 INCH (180mm) MANIFOLD RUNNER LENGTH FOR IMPROVED TORQUE AMAZING DEEP INDUCTION SOUND. NITROUS COMPATIBILITY VIA TOP MOUNT PORTS. CAN ALSO BE USED FOR E85 OR RACE FUELS FOR ADDITINAL POWER. 51MM THROTTLE BODY OPENINGS x8 FOR UNMATCHED AIR FLOW OVER ANY OTHER INTAKE. Contents Included in the kit: Complete Bolt-On ITB Kit. 8x Manifold Runners & Trumpets. 8x Pre-Assembled Throttle Bodies. Linkage Mechanism & Adjuster Screws Vacuum Block and Hose Fittings. 2x Fuel Rails for Top Injector Ports Optional: Carbon Plenum & Backing Plate (Trumpets include flanges for backing plate). View our other listing here. Throttle Control: Option 1: Cable Throttle. - For use with Standard LS1 Cable Throttle. Kit will come partially assembled. Option 2: DBW Throttle - Includes Supply & Setup with 6-Pin GM Throttle Body. Kit will come fully assembled. Uses a genuine GM throttle body with square 6-pin connector for use with LS. Flat 8-Pin connectors off some LS1 models will require an adapter harness. It is highly recommended to run a standalone ECU when installing a drive-by-wire fitted kit. Sometimes adapting the throttle body settings via the OEM ECU can be difficult. Recommended options include Holley Terminator X Max, ECUMaster and any ECU with Alpha-N capability. Installation Complete bolt-on kit, no additional parts required. Easy Installation. Remove factory intake. Install assembled ITB kit. Install the factory fuel rail and injectors back on. Install the factory TPS onto the back of the kit. Plug in Idle Control, MAP and Brake Booster Vacuum Lines back on. Balance the throttle bodies to ensure smooth idling. Tune on factory ECU via HPTuners or similar. (We have a number of tuning files upon request to upload for easy tuning). Tuning can also be done on Standalone ECU. Please ensure it has Throttle-Based Tuning (Alpha-N) capabilities. Requires the use of a Air Flow Balancer to balance the throttles upon installation. Found here. Specification All throttle bodies and linkage parts are precision CNC machined from 6061 Billet Aluminium. Center-less ground 12L14 Steel Shafts with Sealed Ball Bearings High Precisions 7-Degree Brass throttle plates 51mm throttles @ 469CFM flow each. Spun Aluminium Velocity stacks with parabolic rolled edge for maximum flow with minimal turbulance. Designed by RHD Engineering. One year Money-Back Guarantee Direct Transfer Payment available. Contact Us. (See Warranty & Returns Page for more details) Holden, Chevrolet, General Motors, Chevy, Camaro, Pontiac