{"product_id":"fueltech-yamaha-1800-ttr-cnc-billet-intake-manifold","title":"FuelTech Yamaha 1800 \/ 1.8L Engine TTR CNC Billet Intake Manifold Reversible","description":"\u003cp\u003eThe TTR CNC billet intake manifold replaces the factory intake on Yamaha 1800 \/ 1.8L engines with a plenum built for boosted watercraft. Internal carbon fiber velocity stacks and a balanced plenum keep airflow even across all four cylinders, and the design was developed and proven on FuelTech's own compound turbo and supercharged race jet ski. It is aimed at high-boost Yamaha PWC builds where cylinder-to-cylinder consistency matters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReversible plenum mounts the throttle body facing front or rear to suit common turbo or supercharger layouts\u003c\/li\u003e\n\u003cli\u003eInternal carbon fiber velocity stacks\u003c\/li\u003e\n\u003cli\u003eIn FuelTech's EGT-logged testing at roughly 1,450°F, cylinder-to-cylinder EGT spread stayed under 20°F at high boost and RPM\u003c\/li\u003e\n\u003cli\u003eRuns 4 or 8 injectors; any injector size can be used, sized for the target power level (capable of supporting 1,000+ hp)\u003c\/li\u003e\n\u003cli\u003eAccepts the stock Yamaha electronic throttle body (SVHO or HO) or a Bosch Motorsports 68mm electronic throttle body\u003c\/li\u003e\n\u003cli\u003eO-ring sealed at the cylinder head, plenum and throttle body flanges (O-rings provided)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits Yamaha 1800 \/ 1.8L engines. With 4 injectors the manifold works with the OEM fuel rail. For 8 injectors, use a TTR Yamaha 1.8L \/ 1.9L High Flow Billet Racing Fuel Rail alongside the OEM rail, or two racing rails; drilling is required for 8-injector setups.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ew\/o fuel rail:\u003c\/strong\u003e intake manifold with flange O-rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ew\/ TTR CNC fuel rail for 8 injectors:\u003c\/strong\u003e intake manifold plus the TTR CNC billet fuel rail for an 8-injector setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cp\u003eFuelTech injectors are recommended but not required. Choose injector size based on fuel type and power goal.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Which engines does this intake manifold fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is designed for Yamaha 1800 \/ 1.8L personal watercraft engines.\"}},{\"@type\":\"Question\",\"name\":\"Can I use it with a turbo or a supercharger?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The plenum is reversible, so the throttle body can face forward or rearward to match common turbo or supercharger layouts.\"}},{\"@type\":\"Question\",\"name\":\"Do I need new fuel rails?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not for 4 injectors; the OEM fuel rail works. For 8 injectors, add a TTR Yamaha 1.8L \/ 1.9L High Flow Billet Racing Fuel Rail to the OEM rail or run two racing rails. Drilling is required for 8-injector applications.\"}},{\"@type\":\"Question\",\"name\":\"Which throttle bodies are compatible?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The original Yamaha electronic throttle body (SVHO or HO) or the Bosch Motorsports 68mm electronic throttle body.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between the two options?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The w\/o fuel rail option is the manifold only. The second option adds a TTR CNC fuel rail for running 8 injectors.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"w\/o fuel rail","offer_id":50629502533849,"sku":"5017000678","price":2299.0,"currency_code":"USD","in_stock":true},{"title":"w\/ TTR CNC fuel rail for 8 injectors","offer_id":50629502566617,"sku":"5017000678 \/ 5017000696","price":2558.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2734\/8185\/files\/FuelTech-Yamaha-1800-Reversible-Intake-Manifold.jpg?v=1791471437","url":"https:\/\/www.autosportsengineering.com\/products\/fueltech-yamaha-1800-ttr-cnc-billet-intake-manifold","provider":"Autosports engineering","version":"1.0","type":"link"}