{"product_id":"ej20-ej25-wrx-sti-intake-manifold","title":"EJ20\/EJ25 WRX\/STI Intake Manifold","description":"The AMS Performance Subaru Intake Manifold is engineered to deliver superior performance for Subaru EJ20 and EJ25 WRX \u0026amp; STI engines. This cast manifold boasts a substantial 4.5-liter plenum volume and 13-inch equal-length intake runners with a 2.5-inch ID bellhorn. By integrating the TGV housing into its design, it achieves a full 13-inch runner taper for optimized airflow, replacing the need for separate TGV delete housings and providing a cost-effective, one-piece solution.\n\nDesigned with extensive testing and modern engineering principles, this intake manifold aims to maximize airflow and efficiency, resulting in significant power gains across a wide powerband and improved high-RPM horsepower capabilities. It features increased port sizes at the cylinder heads, allowing for better matching with hand-ported or CNC-ported cylinder heads. The throttle body opening can accommodate larger throttle bodies up to 70mm with minor porting, and it is flanged for 04+ STI drive-by-wire throttle bodies, though cable throttle bodies can be adapted.\n\nInstallation of the AMS Subaru Intake Manifold comes with several important considerations. It is not compatible with top mount intercoolers, stock fuel rails or lines, or standard Subaru-style injectors (Side Feeds, Stock STI Style Injectors); aftermarket top-feed injectors are recommended. Standard configuration may require mild custom fabrication for intercooler piping due to the throttle body placement. The reversed configuration requires relocation of the alternator, removal of the A\/C compressor, and custom intercooler piping. Furthermore, mounting the factory upper coolant reservoir will require custom bracketry. Some 2008+ STI models may also require mild clearancing of the A\/C compressor line.","brand":"AMS","offers":[{"title":"Default Title","offer_id":52686926938424,"sku":"AMS.31.08.000x-","price":499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/661166441.jpg?v=1784878549","url":"https:\/\/store.motormia.co\/products\/ej20-ej25-wrx-sti-intake-manifold","provider":"MOTORMIA","version":"1.0","type":"link"}