{"product_id":"radium-pi-kit-b58tu-supra","title":"Radium Port Injection Kit — B58TU (Z4 G29)","description":"\u003cp\u003e\u003cstrong\u003eRadium Engineering port injection kit for the B58TU — Z4 G29.\u003c\/strong\u003e A supplemental port-injection fuel rail that adds injectors at the intake ports to back up the factory direct injection on big-power E85\/blend builds. It supplements — does not replace — the OEM DI.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eAn anodized billet adapter plate that mounts between the intake manifold and the head, a CNC-machined billet fuel rail (8AN ORB ports), B58TU intake-port gaskets, and stainless hardware. \u003cstrong\u003eInjectors are not included\u003c\/strong\u003e — the rail accepts top-feed injectors with 14mm O-rings and a short 34mm body (e.g. Injector Dynamics ID1050-XDS \/ ID1300-XDS \/ ID1700-XDS). Compatible with all fuels including E85.\u003c\/p\u003e\n\u003ch3\u003eInstall note\u003c\/h3\u003e\n\u003cp\u003eBecause the kit spaces the intake manifold off the head, an aftermarket charge pipe is required for the throttle-body connection, and a low-pressure supply (e.g. a second in-tank pump via a Radium fuel-pump hanger) feeds the port injectors.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eSupplemental fueling for high-power B58 builds where direct injection runs out. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e2nd-generation B58TU — BMW Z4 G29 (and the shared-engine Toyota GR Supra). Not compatible with 1st-gen B58 (B58B30A). Confirm your engine generation at intake.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-b58\"\u003eFueling Kit — B58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"PIK base","offer_id":43280715972669,"sku":"20-0753","price":885.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/radium-pi-kit-b58tu.webp?v=1781742887","url":"https:\/\/essewerks.com\/products\/radium-pi-kit-b58tu-supra","provider":"Esse Werks","version":"1.0","type":"link"}