{"product_id":"isr-performance-turbo-kit-mazda-miata-nb-1-8-no-turbocharger-included","title":"ISR Performance Turbo Kit - Mazda Miata NB 1.8 - No Turbocharger Included","description":"\u003cp\u003eThe ISR Performance Turbo Kit (Parts Only, no turbocharger) is the complete bolt-on turbocharger plumbing and hardware set for the 1.8L Mazda Miata NB (1999-2005), without the turbo itself included. Built around a Schedule 10 tubular manifold, chassis-specific intercooler, full polished aluminum piping, and AN-fitted oil and water lines. Designed for builders sourcing their own T25, T28, or compatible turbocharger.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eThis is the same complete turbo plumbing kit as the IS-NB18TurboKit-T28, minus the turbocharger. Everything else you need to bolt the turbo system to a 1.8L NB Miata is in the box: manifold, intercooler, piping, downpipe, oil and water plumbing, and AFM-delete intake. The Schedule 10 tubular manifold resists cracking far better than cast or thin-wall tubular alternatives, which matters on a turbo Miata that'll see heat cycle abuse.\u003c\/p\u003e\n\n\u003ch3\u003eTurbo Compatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for compact T25, T28, or GT-style turbochargers.\u003c\/strong\u003e The kit will require a bolt-on cover GT-style T28 turbocharger for a complete installation as-designed. Other T25 turbochargers such as the Garrett GT2871R can be used with simple modifications. Plan turbo selection accordingly during your build.\u003c\/p\u003e\n\n\u003ch3\u003eCritical Build Requirements\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAftermarket ECU required.\u003c\/strong\u003e The kit is designed for use with an aftermarket standalone or piggyback ECU running on a MAP sensor. The AFM is deleted by the included intake, so you cannot run this kit on a factory MAF-based ECU.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHotpipe BOV flange sold separately.\u003c\/strong\u003e The included modular hotpipe accepts ISR, HKS, GReddy, or TiAL flanges, but the flange itself isn't in the box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2.5 inch hole required for intercooler piping.\u003c\/strong\u003e Routing the intercooler piping through the chassis requires drilling a 2.5 inch hole.\u003c\/p\u003e\n\n\u003ch3\u003eWant the Turbo Included?\u003c\/h3\u003e\n\u003cp\u003eIf you'd prefer a true single-purchase complete kit with a proven turbocharger already matched to it, ISR offers the same kit with the RST25\/28 turbo included as part number IS-NB18TurboKit-T28.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1999-2005 Mazda Miata NB (1.8L BP engine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Schedule 10 bottom-mount tubular turbo manifold\u003c\/li\u003e\n\u003cli\u003e1x Intercooler and piping kit (polished aluminum, chassis-specific bracket)\u003c\/li\u003e\n\u003cli\u003e1x Turbine O2 housing and downpipe\u003c\/li\u003e\n\u003cli\u003e1x Complete oil and water turbo lines with 10AN aluminum weld bung for oil pan\u003c\/li\u003e\n\u003cli\u003e1x AFM-delete intake with air filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNOT included:\u003c\/strong\u003e Turbocharger\u003c\/p\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ISR Performance\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e IS-NB18TurboKit-Parts\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Turbo Kit Parts Only (no turbocharger)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e 1999-2005 Mazda Miata NB\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e Mazda BP 1.8L\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eTurbo Required for Complete Install:\u003c\/strong\u003e Bolt-on cover GT-style T28, or Garrett GT2871R \/ similar T25 with simple modifications\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eManifold:\u003c\/strong\u003e Schedule 10 tubular bottom-mount\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eExhaust Construction:\u003c\/strong\u003e 304 stainless steel\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eIntercooler:\u003c\/strong\u003e Chassis-specific with mounting bracket, polished aluminum piping\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eECU Requirement:\u003c\/strong\u003e Aftermarket ECU with MAP sensor (AFM delete)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eBOV Flange:\u003c\/strong\u003e Sold separately (ISR, HKS, GReddy, or TiAL options)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e 2.5 inch hole required for intercooler routing\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eComplete Kit Variant:\u003c\/strong\u003e IS-NB18TurboKit-T28 (turbo included)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eSold:\u003c\/strong\u003e Parts only, no turbocharger\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eLegality:\u003c\/strong\u003e Off-road and competition use only\u003c\/p\u003e","brand":"ISR Performance","offers":[{"title":"Default Title","offer_id":45957128618181,"sku":"IS-NB18TurboKit-Parts","price":1925.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/2718\/9701\/files\/without_turbo__04143.1630073085.500.659.jpg?v=1773346740","url":"https:\/\/www.isrcompetition.com\/products\/isr-performance-turbo-kit-mazda-miata-nb-1-8-no-turbocharger-included","provider":"ISR Competition","version":"1.0","type":"link"}