{"product_id":"haltech-nexus-r3-vcu-plug-n-play-2004-2008-mazda-rx8","title":"Haltech Nexus R3 VCU Plug'n'Play Kit - Mazda RX-8 Series 1 2004-2008 (TBS-00313)","description":"\u003cstyle\u003e\n  \/* Tuned By Shawn PDP styles. Scoped to .tbs-pdp, relative units only (rem\/em\/ch), zoom and mobile friendly. *\/\n  .tbs-pdp {\n    max-width: 78ch;\n    margin-inline: auto;\n    line-height: 1.6;\n    \/* ch does the sizing, rem bounds stop it inflating: body lands between 15.2px and 17px equivalent *\/\n    font-size: clamp(0.95rem, 1.8ch, 1.0625rem);\n    overflow-wrap: break-word;\n    text-rendering: optimizeLegibility;\n  }\n  .tbs-pdp h2,\n  .tbs-pdp h3,\n  .tbs-pdp h4 {\n    line-height: 1.25;\n    margin-block: 1.5em 0.5em;\n  }\n  .tbs-pdp h2 { font-size: clamp(1.25rem, 2.9ch, 1.65rem); }\n  .tbs-pdp h3 {\n    font-size: clamp(1.1rem, 2.5ch, 1.35rem);\n  }\n  .tbs-pdp h3::before {\n    content: \"\/\/\/ \";\n    color: #FFD100;\n    letter-spacing: -0.05em;\n  }\n  .tbs-pdp h4 { font-size: clamp(1rem, 2.2ch, 1.15rem); }\n  .tbs-pdp p, .tbs-pdp li { max-width: 72ch; }\n  .tbs-pdp ul, .tbs-pdp ol { padding-left: 3ch; }\n  .tbs-pdp li { margin-block: 0.35em; }\n  .tbs-pdp hr {\n    border: none;\n    border-top: 0.0625rem solid rgba(0, 0, 0, 0.15);\n    margin-block: 2em;\n  }\n\n  \/* Tables: fluid, wrapped in a horizontal scroll container so nothing overflows on narrow screens or high zoom *\/\n  .tbs-table-scroll {\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin-block: 1em;\n  }\n  .tbs-pdp table {\n    border-collapse: collapse;\n    width: 100%;\n    min-width: 36ch;\n    font-size: clamp(0.85rem, 1.7ch, 0.95rem);\n  }\n  .tbs-pdp caption {\n    caption-side: top;\n    text-align: left;\n    font-weight: 700;\n    padding-block: 0.5em;\n  }\n  .tbs-pdp th,\n  .tbs-pdp td {\n    border: 0.0625rem solid rgba(0, 0, 0, 0.2);\n    padding: 0.6em 1ch;\n    text-align: left;\n    vertical-align: top;\n  }\n  .tbs-pdp thead th {\n    background: #111;\n    color: #FFD100;\n  }\n  .tbs-pdp tbody th[scope=\"row\"] {\n    background: rgba(0, 0, 0, 0.05);\n    font-weight: 600;\n    white-space: normal;\n  }\n\n  .tbs-callout {\n    border: 0.0625rem solid #FFD100;\n    border-left: 0.5ch solid #FFD100;\n    padding: 0.75em 1.5ch;\n    margin-block: 1em;\n    max-width: 72ch;\n  }\n\n  @media (max-width: 40em) {\n    \/* Body copy stays at full reading size; table row text steps down, bounded both directions *\/\n    .tbs-pdp { font-size: clamp(0.95rem, 1.8ch, 1.0625rem); line-height: 1.65; }\n    .tbs-pdp p, .tbs-pdp li { font-size: clamp(0.95rem, 1.8ch, 1.0625rem); }\n    .tbs-pdp table { font-size: clamp(0.8rem, 1.6ch, 0.875rem); }\n    .tbs-pdp tbody th, .tbs-pdp tbody td {\n      font-size: clamp(0.75rem, 1.5ch, 0.8125rem);\n      line-height: 1.45;\n      padding: 0.45em 0.75ch;\n    }\n    .tbs-pdp thead th { font-size: clamp(0.8rem, 1.6ch, 0.875rem); }\n    .tbs-pdp caption { font-size: clamp(0.85rem, 1.7ch, 0.95rem); }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"tbs-pdp\"\u003e\n\u003ch2\u003eHaltech Nexus R3 Plug and Play VCU Kit for 2004-2008 Mazda RX-8 (13B-MSP Renesis)\u003c\/h2\u003e\n\u003cp\u003eA complete bolt-in standalone engine management upgrade for the 2004-2008 Mazda RX-8. This kit pairs the \u003cstrong\u003eHaltech Nexus R3 Vehicle Control Unit\u003c\/strong\u003e with our RX-8 plug and play integration, developed in house to work with the factory chassis rather than against it. The factory instrument cluster, ABS, and electric power steering keep working exactly as they did from the factory while you gain full standalone tuning control over the 13B-MSP Renesis.\u003c\/p\u003e\n\u003cp\u003eRotary-critical systems are fully supported: the auxiliary port valves (APV), the factory oil metering pump (OMP), and complete control of primary and secondary injector staging.\u003c\/p\u003e\n\u003cdiv class=\"tbs-callout\"\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for the RX-8, not adapted to it.\u003c\/strong\u003e Cluster, ABS, and electric power steering stay online, and APV and OMP control are handled by the kit, so the Renesis runs the way Mazda intended while the tuning is finally in your hands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHaltech Nexus R3 VCU, configured for the 2004-2008 RX-8\u003c\/li\u003e\n\u003cli\u003eUSB ECU interface cable for tuning and changing settings\u003c\/li\u003e\n\u003cli\u003eWideband oxygen sensor\u003c\/li\u003e\n\u003cli\u003e1GB USB thumb drive\u003c\/li\u003e\n\u003cli\u003eHaltech keychain and sticker pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy this kit exists\u003c\/h3\u003e\n\u003cp\u003eMost standalone ECU installs on an RX-8 leave you with a running engine and a compromised car. The cluster stops reading, the ABS light comes on, the electric power steering drops out, and the rotary-specific hardware the Renesis depends on gets abandoned entirely. The RX-8 relies on constant communication between its modules, and it all disappears the moment the factory engine computer is removed.\u003c\/p\u003e\n\u003cp\u003eThis kit handles that for you. The integration keeps the factory chassis systems happy while the Nexus R3 takes over the engine, including the APV and OMP control that generic standalone installs leave behind. You focus on tuning the rotary instead of chasing electrical gremlins.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eRotary-specific control\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjector staging\u003c\/strong\u003e: full control of the Renesis primary and secondary injector staging strategy, tunable to your fuel system and power goals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary port valves (APV)\u003c\/strong\u003e: factory APV operation is supported, preserving the port timing behavior the 13B-MSP was designed around\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil metering pump (OMP)\u003c\/strong\u003e: the factory OMP is supported, keeping apex seal lubrication managed the way the engine expects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eHaltech Nexus R3 engine management features\u003c\/h3\u003e\n\u003cp\u003eThe Nexus R3 is Haltech's mid-range Vehicle Control Unit. It combines a full engine management system, a power distribution module (PDM), a single-channel wideband controller, onboard data logging, and Wi-Fi communications in one sealed IP67 enclosure.\u003c\/p\u003e\n\u003ch4\u003eTuning and engine control\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSupports 2 to 4 rotor engines and 1 to 8 cylinder engines\u003c\/li\u003e\n\u003cli\u003eFull sequential fuel and spark, including leading and trailing ignition control\u003c\/li\u003e\n\u003cli\u003eClosed-loop idle speed control with learning\u003c\/li\u003e\n\u003cli\u003eClosed-loop O2 control via the onboard wideband (NTK and LSU4.9 supported)\u003c\/li\u003e\n\u003cli\u003eOnboard 4 bar MAP sensor\u003c\/li\u003e\n\u003cli\u003eModeled torque tables and 4D tuning tables with 3D compensations\u003c\/li\u003e\n\u003cli\u003eMulti-fuel support: gasoline, E85, methanol, ethanol, with flex fuel sensor input\u003c\/li\u003e\n\u003cli\u003eClosed-loop boost control by gear, road speed, time, or any user-defined channel\u003c\/li\u003e\n\u003cli\u003eLaunch control, anti-lag, rolling anti-lag, and flat shift\u003c\/li\u003e\n\u003cli\u003eHaltech Traction Control with mappable per-axle or per-wheel slip targets\u003c\/li\u003e\n\u003cli\u003eEngine protection with multi-level limits on every sensor\u003c\/li\u003e\n\u003cli\u003eNitrous control with up to 6 stages, wet or dry\u003c\/li\u003e\n\u003cli\u003eAuto-tune with short and long-term fuel and ignition learning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePower distribution (PDM)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e4 x 25A continuous push-pull PWM-capable outputs (5 kHz) for fuel pumps, fans, and other heavy loads\u003c\/li\u003e\n\u003cli\u003e6 x 8A high-side outputs (200 Hz PWM) for sensors, accessories, and lights\u003c\/li\u003e\n\u003cli\u003e6 x half-bridge outputs for motor control\u003c\/li\u003e\n\u003cli\u003eReplaces many traditional fuses and relays\u003c\/li\u003e\n\u003cli\u003eLive current draw logging on every output\u003c\/li\u003e\n\u003cli\u003eSoftware-configurable circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInputs and I\/O\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e11 x analog voltage inputs (0-5V) with switchable 5V pullup\u003c\/li\u003e\n\u003cli\u003e6 x synchronous pulsed inputs (zero crossing or adjustable threshold)\u003c\/li\u003e\n\u003cli\u003e2 x differential engine position inputs (trigger and home) with adjustable thresholds and glitch filters\u003c\/li\u003e\n\u003cli\u003e1 x onboard wideband lambda input\u003c\/li\u003e\n\u003cli\u003e8 x peak\/hold injector outputs\u003c\/li\u003e\n\u003cli\u003e8 x ignition outputs\u003c\/li\u003e\n\u003cli\u003e2 x CAN ports with switchable termination\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eConnectivity and logging\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB laptop connection\u003c\/strong\u003e for tuning and firmware updates (interface cable included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Wi-Fi\u003c\/strong\u003e for live data monitoring and gauge mirroring while driving\u003c\/li\u003e\n\u003cli\u003eOnboard data logging at sample rates up to 1 kHz\u003c\/li\u003e\n\u003cli\u003eCompatible with Haltech IC-7 and uC-10 displays\u003c\/li\u003e\n\u003cli\u003eTuned with NSP (Nexus Software Programmer), a free download from Haltech\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat still works after install\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFactory instrument cluster: tachometer, speedometer, and warning lights\u003c\/li\u003e\n\u003cli\u003eABS (anti-lock braking)\u003c\/li\u003e\n\u003cli\u003eElectric power steering\u003c\/li\u003e\n\u003cli\u003eAuxiliary port valve (APV) operation\u003c\/li\u003e\n\u003cli\u003eFactory oil metering pump (OMP)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cdiv class=\"tbs-table-scroll\"\u003e\n\u003ctable\u003e\n\u003ccaption\u003eRX-8 Nexus R3 kit compatibility\u003c\/caption\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eItem\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSupported\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVehicle\u003c\/th\u003e\n\u003ctd\u003e2004-2008 Mazda RX-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEngine\u003c\/th\u003e\n\u003ctd\u003e13B-MSP Renesis, naturally aspirated and forced-induction builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCluster\u003c\/th\u003e\n\u003ctd\u003eFactory RX-8 instrument cluster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSoftware\u003c\/th\u003e\n\u003ctd\u003eHaltech NSP (Nexus Software Programmer), Windows 10\/11, free download from Haltech\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eDesigned as a true plug and play swap for the RX-8 chassis.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery\u003c\/li\u003e\n\u003cli\u003eRemove the factory engine computer and unplug its harness\u003c\/li\u003e\n\u003cli\u003eMount the Nexus R3 where the USB port stays accessible for tuning\u003c\/li\u003e\n\u003cli\u003eConnect the kit to the factory harness\u003c\/li\u003e\n\u003cli\u003eReconnect the battery, load your base map, and verify sensors before first start\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"tbs-table-scroll\"\u003e\n\u003ctable\u003e\n\u003ccaption\u003eHaltech Nexus R3 specifications summary\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eECU model\u003c\/th\u003e\n\u003ctd\u003eHaltech Nexus R3 VCU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEngine support\u003c\/th\u003e\n\u003ctd\u003eUp to 4 rotors or 8 cylinders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInjector outputs\u003c\/th\u003e\n\u003ctd\u003e8 peak\/hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIgnition outputs\u003c\/th\u003e\n\u003ctd\u003e8 low-current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePDM outputs\u003c\/th\u003e\n\u003ctd\u003e4 x 25A high-current PWM, 6 x 8A high-side, 6 x half-bridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAnalog inputs\u003c\/th\u003e\n\u003ctd\u003e11 (0-5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePulsed inputs\u003c\/th\u003e\n\u003ctd\u003e6 synchronous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWideband\u003c\/th\u003e\n\u003ctd\u003e1 onboard channel (NTK and LSU4.9), sensor included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMAP sensor\u003c\/th\u003e\n\u003ctd\u003eOnboard 4 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTuning interface\u003c\/th\u003e\n\u003ctd\u003eUSB (cable included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLive data \/ monitoring\u003c\/th\u003e\n\u003ctd\u003eWi-Fi or USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCAN bus\u003c\/th\u003e\n\u003ctd\u003eDual channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eData logging\u003c\/th\u003e\n\u003ctd\u003eOnboard, up to 1 kHz sample rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCase\u003c\/th\u003e\n\u003ctd\u003eIP67-rated sealed enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSoftware\u003c\/th\u003e\n\u003ctd\u003eNSP (Nexus Software Programmer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003ch4\u003eWill my factory dash still work with a standalone ECU in an RX-8?\u003c\/h4\u003e\n\u003cp\u003eYes. The kit keeps the factory cluster fully functional after the Nexus R3 install, along with ABS and electric power steering.\u003c\/p\u003e\n\u003ch4\u003eDoes this kit control the oil metering pump, or do I need to premix?\u003c\/h4\u003e\n\u003cp\u003eThe factory OMP is supported by this kit, so apex seal lubrication stays managed as the engine expects. Premix remains an option for owners who prefer it, but it is not required by the ECU conversion itself.\u003c\/p\u003e\n\u003ch4\u003eCan I run this kit on a turbocharged Renesis?\u003c\/h4\u003e\n\u003cp\u003eYes. The Nexus R3 includes closed-loop boost control, flex fuel support, engine protection, and full injector staging control, making it well suited to forced-induction Renesis builds.\u003c\/p\u003e\n\u003ch4\u003eDo I need a tune after installing the Nexus R3?\u003c\/h4\u003e\n\u003cp\u003eA proper tune for your specific setup is recommended. Live remote tuning over Zoom is available through Tuned By Shawn, so your RX-8 can be dialed in without leaving your garage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Tuned By Shawn","offers":[{"title":"Default Title","offer_id":40631489495107,"sku":"TBS-00313","price":3453.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/MazdaRX8PlugnPlayECUHaltechTunedbyShawn.jpg?v=1786481938","url":"https:\/\/www.tunedbyshawn.com\/products\/haltech-nexus-r3-vcu-plug-n-play-2004-2008-mazda-rx8","provider":"Tuned by Shawn","version":"1.0","type":"link"}