Meticulously designed using the most advanced simulation software, the TTR CNC Billet intake manifold for Yamaha 1800 / 1.8L engines sets new performance standards. Featuring internal carbon fiber velocity stacks and a plenum designed to maintain perfectly balanced airflow distribution, this manifold has been tested and refined in extreme environments, including our FuelTech Compound Turbo and Supercharged racing jet ski.
PRODUCT FEATURES
Reversible Design for Supercharger or Turbo: The reversible design allows the plenum to be mounted with the throttle body facing forward or backward, making it compatible with the most common Supercharger or Turbo configurations.
Incredible Efficiency: Even at extreme boost and RPM levels, this manifold has demonstrated extraordinarily precise airflow distribution. With Exhaust Gas Temperatures (EGT) in the 1450°F range, fluctuations between cylinders remain below 20°F. This level of thermal stability is an exceptional achievement in high-performance racing applications.
Power Flexibility: Engineered for use with 4 or 8 injectors, simplifying the fuel system and wiring. Although not mandatory, we recommend using FT Injectors for optimal performance. Compatible with injectors of any size depending on the desired power and fuel, it can support over 1000hp.
Expanded Throttle Body Options: Compatible with the original Yamaha electronic throttle body (SVHO or HO) or the 68mm Bosch Motorsports unit, the preferred choice for enthusiasts and professionals.
Advanced Compatibility: The manifold is compatible with OEM fuel rails when using 4 injectors. For 8-injector use, it is recommended to pair it with TTR High Flow Racing Fuel Rails (for 8 injectors, use the Racing rail in addition to the OEM one, or two Racing rails). Drilling is required for 8-injector applications. All flanges are sealed with the supplied O-rings to ensure an airtight seal on the cylinder head, plenum, and throttle body.
WARNING
All GMC Racing items that result in power increases exceeding those permitted by the road traffic regulations of the user's country are intended exclusively for competitive use. GMC Racing declines all responsibility for any use of the product that is contrary to national regulations.
