{"title":"ThunderMax ECMs","description":"\u003cp\u003eSelect the ThunderMax ECM matching your motorcycle’s year, model and engine generation. For Trask turbo builds, the correct turbo calibration is also required.\u003c\/p\u003e","products":[{"product_id":"thundermax-autotune-ecm-309-588-2017-2020-m8-touring","title":"ThunderMax AutoTune ECM 309-588 — 2017–2020 M8 Touring","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for 2017–2020 m8 touring.\u003c\/p\u003e\u003cp\u003eConfirm the exact bike model and factory electronics before ordering.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, use the ECM matching the motorcycle and have the correct Trask turbo calibration loaded. The turbo kit does not include this ECM.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Supplier prohibits shipping this item to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-588. Supplier part: 1020-2664.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731240657134,"sku":"1020-2664","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-588_Clipped_2025.png?v=1791759272"},{"product_id":"thundermax-autotune-ecm-309-589-2018-2020-m8-softail","title":"ThunderMax AutoTune ECM 309-589 — 2018–2020 M8 Softail","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for 2018–2020 Milwaukee-Eight Softail models.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, match the ECM to the motorcycle and load the correct Trask turbo calibration. ECM sold separately from the turbo kit.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-589. Supplier part: 1020-2795.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731245474030,"sku":"1020-2795","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-589_Clipped_2025.png?v=1791759296"},{"product_id":"thundermax-autotune-ecm-309-591-2021-up-touring-excludes-center-cooled-engines","title":"ThunderMax AutoTune ECM 309-591 — 2021-Up Touring — Excludes Center-Cooled Engines","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for 2021-up touring — excludes center-cooled engines.\u003c\/p\u003e\u003cp\u003eExcludes center-cooled engines; those applications use 309-605.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, use the ECM matching the motorcycle and have the correct Trask turbo calibration loaded. The turbo kit does not include this ECM.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-591. Supplier part: 1020-3514.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731246817518,"sku":"1020-3514","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-591_clipped_2025.png?v=1791759315"},{"product_id":"thundermax-autotune-ecm-309-592-2021-2024-m8-softail-includes-ecm-caddy","title":"ThunderMax AutoTune ECM 309-592 — 2021–2024 M8 Softail — Includes ECM Caddy","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for 2021–2024 m8 softail — includes ecm caddy.\u003c\/p\u003e\u003cp\u003eIncludes the Softail-specific mounting caddy. 2025 and later Softail compatibility must be confirmed separately.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, use the ECM matching the motorcycle and have the correct Trask turbo calibration loaded. The turbo kit does not include this ECM.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-592. Supplier part: 1020-3515.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731246915822,"sku":"1020-3515","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-592_Clipped_2025.png?v=1791759318"},{"product_id":"thundermax-autotune-ecm-309-605-2023-5-up-center-cooled-touring-vvt-non-vvt","title":"ThunderMax AutoTune ECM 309-605 — 2023.5-Up Center-Cooled Touring — VVT \u0026 Non-VVT","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for 2023.5-up center-cooled touring — vvt \u0026amp; non-vvt.\u003c\/p\u003e\u003cp\u003eFor center-cooled Touring models with VVT or without VVT. Road King, earlier Ultra and Trike applications may instead require 309-591.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, use the ECM matching the motorcycle and have the correct Trask turbo calibration loaded. The turbo kit does not include this ECM.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-605. Supplier part: 1020-4289.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731246981358,"sku":"1020-4289","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-605_Clipped_2025.png?v=1791759321"},{"product_id":"thundermax-autotune-ecm-309-606-2025-up-gen-2-m8-softail","title":"ThunderMax AutoTune ECM 309-606 — 2025-Up Gen 2 M8 Softail","description":"\u003cp\u003eStandalone ThunderMax ECM with wide-band AutoTune for compatible 2025 and later Gen 2 Milwaukee-Eight Softail models.\u003c\/p\u003e\u003cp\u003eFor a Trask turbo build, confirm your exact motorcycle and load the correct Trask turbo calibration. ECM sold separately from the turbo kit. Earlier Softails use a different ThunderMax application.\u003c\/p\u003e\u003cp\u003eUses 18 mm oxygen sensors; verify exhaust ports. Race-ready applications only. Cannot ship to California.\u003c\/p\u003e\u003cp\u003eManufacturer part: 309-606. Supplier part: 1020-4290.\u003c\/p\u003e","brand":"ThunderMax","offers":[{"title":"Default Title","offer_id":49731249275118,"sku":"1020-4290","price":1088.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/4902\/0654\/files\/309-606_Clipped_2025.png?v=1791759464"}],"url":"https:\/\/highdesertperf.com\/collections\/thundermax-ecms.oembed","provider":"High Desert Performance ","version":"1.0","type":"link"}