{"product_id":"epaspeed-1-4-b-tuning-for-bosch-du38","title":"EPAspeed 1.4 B.Tuning for Bosch Rim Magnet (BDU38)","description":"\u003cp style=\"tab-stops: 53.85pt;\" class=\"MsoNormal\"\u003e\u003cstrong\u003eCOMPATIBILITY \u0026amp; PRODUCT CODE VERIFICATION GUIDE\u003cbr\u003eImportant – Please Read Before Purchasing\u003cbr\u003e\u003c\/strong\u003eBefore purchasing this device, it is essential to verify the “\u003cstrong\u003eProduct Code\u003c\/strong\u003e” of your Bosch motor to ensure compatibility.\u003cbr\u003eThe Product Code is printed directly on the motor label.\u003cbr\u003eIn the example image, the two label formats currently used by Bosch are shown, with the Product Codes highlighted in red.\u003c\/p\u003e\n\u003cp style=\"tab-stops: 53.85pt;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/5434\/6922\/files\/Screenshot_2025-04-12_at_11.02.29.jpg?v=1744445792\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"tab-stops: 53.85pt;\" class=\"MsoNormal\"\u003e\u003cstrong\u003eCOMPATIBLE BOSCH MOTORS\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBDU3142 \/ BDU3143\u003c\/strong\u003e (Gen4): Performance Line SX, Motor mounting: 2 upper bolts \u003cbr\u003e\u003cstrong\u003eBDU3144 \/ BDU3145\u003c\/strong\u003e (Gen4): Performance Line SX, Motor mounting: 2 diagonal bolts \u003cbr\u003e\u003cstrong\u003eBDU33\u003c\/strong\u003e (Gen3): Performance Line, Active Line, Active Line Plus\u003cbr\u003e\u003cstrong\u003eBDU34 \u003c\/strong\u003ePerformance Line PX (BDU347) and Performance Line (BDU346) \u003cbr\u003e\u003cstrong\u003eBDU37\u003c\/strong\u003e (Gen4): Performance Line CX, Performance Line CX-Race \u003cbr\u003e\u003cstrong\u003eBDU38\u003c\/strong\u003e (Gen5): Performance Line SX, Performance Line CX, Performance Line CX-R\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 3;\"\u003e\u003cstrong\u003eNOT COMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003e❌ \u003cstrong\u003eClassic Spoke Magnet Systems\u003c\/strong\u003e\u003cbr\u003eThis device is not compatible with e-bikes equipped with the traditional magnet mounted on the wheel spokes or brake disc.\u003cbr\u003e❌ \u003cstrong\u003eBosch ABS Equipped Bikes\u003c\/strong\u003e\u003cbr\u003eThis device is not compatible with e-bikes using the Bosch ABS braking system.\u003cbr\u003e❌ \u003cstrong\u003eBosch ConnectModule \/ GPS Systems\u003c\/strong\u003e\u003cbr\u003eThis device is not compatible with e-bikes equipped with the Bosch ConnectModule GPS system.\u003c\/p\u003e\n\u003cp style=\"tab-stops: 53.85pt;\" class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp style=\"tab-stops: 53.85pt;\" class=\"MsoNormal\"\u003e\u003cstrong\u003eEPASPEED 1.4 B.TUNING FOR BOSCH RIM MAGNET (BDU38)\u003c\/strong\u003e\u003cspan style=\"font-family: Muli; mso-ansi-language: EN-AU;\" lang=\"EN-AU\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"627\" data-start=\"493\"\u003e\u003cstrong data-end=\"627\" data-start=\"527\"\u003eUnlock Your Bosch Gen5 Smart System with Bluetooth App-Controlled Tuning — Rim Magnet Compatible\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMotors\u003c\/strong\u003e\u003cbr\u003eBDU384x Performance Line CX Gen 5\u003cbr\u003eBDU386x Performance Line CX-R Gen 5, \u003cbr\u003eBDU384x  Cargo Line Gen 5.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDisplay:\u003c\/strong\u003e Compatible with all displays\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Compatible with\u003c\/strong\u003e\u003cbr\u003e4th generation motors\u003cbr\u003eStandard magnet or ABS system\u003cbr\u003eStandard motors (rectangular connectors)\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMaximum speed\u003c\/strong\u003e: 50 kmh (we recommend not exceeding 35 km\/h for long periods)\u003cbr\u003e\u003cstrong\u003eDisplay shows\u003c\/strong\u003e: correct values but with a ratio\u003cbr\u003e\u003cstrong\u003ePhone app show\u003c\/strong\u003e: Correct values all the time \u003cbr\u003e\u003cstrong\u003eCustom speed limit\u003c\/strong\u003e: Adjustable\u003cbr\u003e\u003cstrong\u003eActivation \/ deactivation\u003c\/strong\u003e: via mobile app\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEPAspeed 1.4 B.Tuning  – Advanced E Bike Tuning with Full App Control\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the biggest frustrations for e bike riders and tuning developers is the constant threat of firmware (FW) updates disabling their tuning. Most traditional chips are highly vulnerable, leaving riders suddenly without a functioning solution. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEPAspeed 1.4 B.Tuning is engineered to resist firmware updates, making it one of the most reliable tuning solutions on the market today.\u003cbr\u003eEverything is controlled via the dedicated mobile app — no more cryptic button sequences or confusing display hacks. Adjust your maximum assisted speed or activate invisible tuning mode in seconds, all directly from your smartphone.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEPAspeed 1.4 B.Tuning – Next-Generation E-Bike Tuning with Bluetooth \u0026amp; Mobile App\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExperience the ultimate connection between your e-bike and smartphone with the EPAspeed 1.4 B.Tuning  chip — our most powerful and versatile tuning solution yet.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to suppress the factory speed limiter, the EPAspeed chip unlocks your bike’s full potential, delivering unmatched performance and freedom on every ride. Paired with the EPAspeed App, you can monitor, save, and review your trip data anytime, anywhere.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmart Connectivity with the EPAspeed App\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe EPAspeed App is custom-built for seamless integration with the EPAspeed 1.4 B.Tuning chip via Bluetooth. Once connected, your smartphone becomes a powerful dashboard, showing real-time ride statistics and storing trip data for later review. Share and compare your rides with friends, track your progress, and keep an eye on every detail — all from your phone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003cbr\u003e•   \u003cstrong\u003e Tuning Control\u003c\/strong\u003e – Instantly activate or deactivate tuning\u003cbr\u003e•    \u003cstrong\u003eAdjustable Speed Limits\u003c\/strong\u003e – Set your desired speed threshold\u003cbr\u003e•    \u003cstrong\u003eInvisible Tuning\u003c\/strong\u003e – Undetectable operation for smooth performance\u003cbr\u003e•   \u003cstrong\u003e Trip Recording \u003c\/strong\u003e– Save and review your rides with detailed statistics\u003cbr\u003e•    \u003cstrong\u003eComprehensive Ride Data\u003c\/strong\u003e – Track distance, duration, average \u0026amp; max speed, elevation gain, and much more\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose EPAspeed 1.4 B.Tuning ?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike basic tuning solutions, the EPAspeed 1.4 B.Tuning chip pairs advanced performance with complete ride analytics. Even without the app, the chip enhances your e-bike’s capabilities, but together they deliver the most complete tuning experience available today.\u003cbr\u003eBefore ordering, download the \u003cstrong\u003eEPAspeed App \u003c\/strong\u003eand test the demo version to explore its powerful features. For full functionality, ensure your phone supports Bluetooth 4.0 or higher.\u003cbr\u003eUnlock your e-bike’s full power — with EPAspeed 1.4 B.Tuning.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; gap: 24px;\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/apps.apple.com\/us\/app\/epaspeed\/id6743390831\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/5434\/6922\/files\/Apple_APP_logo._240x240.webp?v=1760181761\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.epa.epaspeed\u0026amp;hl=en\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/5434\/6922\/files\/Screenshot_2025-10-11_at_14.29.28_240x240.png?v=1760182202\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy \u0026amp; Smart Activation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith EPAspeed 1.4 B.Tuning, everything is controlled directly through the mobile app — no more confusing button sequences or hard-to-remember display key combinations. Adjust your maximum assisted speed or activate the invisible tuning mode just in seconds, all from your smartphone.\u003cbr\u003e•    \u003cstrong\u003eInstant Control:\u003c\/strong\u003e Change speed limits via the app in just a tap.\u003cbr\u003e•    \u003cstrong\u003eNo Complicated Display button Codes\u003c\/strong\u003e: Forget about pressing tricky key combinations.\u003cbr\u003e•   \u003cstrong\u003e Invisible Tuning:\u003c\/strong\u003e deactivation of the tuning on your finger tip.\u003cbr\u003e•    \u003cstrong\u003eFirmware Update Resistant\u003c\/strong\u003e: Designed to be more resistant to FW updates in comparison to conventional wired tuning.           \u003c\/p\u003e\n\u003cp\u003eEnjoy a smarter, simpler, and safer tuning experience with EPAspeed 1.4 B.Tuning.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eHow the Speed is Displayed\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eTo achieve advanced \u003cstrong\u003eanti-tuning detection protection\u003c\/strong\u003e, the EPAspeed 1.4 B.Tuning chip uses a smart method for speed display. This ensures reliable operation while maintaining accurate data in the EPA App at all times.\u003cbr\u003e•    \u003cstrong\u003eOn the EPA App:\u003c\/strong\u003e\u003cbr\u003eSpeed is always displayed accurately, regardless of your chosen maximum speed setting.\u003cbr\u003e•    \u003cstrong\u003eOn the E-Bike Display (with decimals):\u003c\/strong\u003e\u003cbr\u003eo    When the max speed is set to \u003cstrong\u003e50 km\/h\u003c\/strong\u003e, your display shows correct values up to \u003cstrong\u003e22.2 km\/h.\u003c\/strong\u003e\u003cbr\u003eo    Above 22.2 km\/h, the tens digit (the “2”) freezes, while the decimal updates to reflect your real speed.\u003cbr\u003eo    Example:\u003cbr\u003e    At 34 km\/h → Display shows 23.4 km\/h\u003cbr\u003e    At 44 km\/h → Display shows 24.4 km\/h\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e•    \u003cstrong\u003eOn the E-Bike Display (without decimals)\u003c\/strong\u003e:\u003cbr\u003eo    The display shows \u003cstrong\u003ehalf of your actual speed\u003c\/strong\u003e.\u003cbr\u003eo    Example:\u003cbr\u003e    At 34 km\/h → Display shows 17 km\/h\u003cbr\u003e    At 44 km\/h → Display shows 22 km\/h\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCustom Speed Settings\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe EPAspeed 1.4 B.Tuning chip offers flexible custom speed limit options at \u003cstrong\u003e30, 35, 40, or 45 km\/h\u003c\/strong\u003e. To maintain its advanced anti-tuning detection system, the e-bike display shows your speed as a scaled ratio of your actual riding speed.\u003cbr\u003e•    30 km\/h setting: Display shows at a ratio of 0.83 (real speed × 0.83)\u003cbr\u003e•    35 km\/h setting: Display shows at a ratio of 0.714\u003cbr\u003e•    40 km\/h setting: Display shows at a ratio of 0.625\u003cbr\u003e•    45 km\/h setting: Display shows at a ratio of 0.55\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eImportant: Regardless of the ratio shown on your e-bike display, the \u003cstrong\u003eEPA App always provides your exact, real-time speed\u003c\/strong\u003e for accurate ride tracking and performance analysis.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhat Makes EPAspeed 1.4 B.Tuning Different\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEPAspeed 1.4 B.Tuning is engineered to resist firmware updates, making it far less prone to failure compared to traditional tunings on today’s market.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Firmware Resistance Matters\u003c\/strong\u003e\u003cbr\u003eE-bike manufacturers release FW updates periodically. While many don’t interfere with tuning, recent years have seen several updates that caused chaos across the tuning industry — leaving countless riders with unusable modules and manufacturers scrambling for fixes.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWhen a FW update disables a conventional tuning, riders typically face:\u003cbr\u003e-    Weeks or months of waiting for new software to be developed\u003cbr\u003e-    Riding without tuning in the meantime\u003cbr\u003e-    Paying to ship the device back at their own expense\u003cbr\u003e-    Additional fees for updates or replacement modules\u003cbr\u003e-    The risk of buying an entirely new tuning device\u003cbr\u003e-    And the worry of the same issue happening again after the next update\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWith EPAspeed 1.4 B.Tuning, this nightmare scenario is minimised. Our engineers designed the chip to reduce the risk of FW update interference, ensuring more reliable performance and longer-lasting tuning freedom.\u003cbr\u003eRide with confidence — EPAspeed 1.4 B.Tuning keeps you ahead of the updates.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDouble Quality Control\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEvery EPAspeed 1.4 B.Tuning undergoes dual-stage quality testing — both before and after casting — to ensure flawless function, finish, and reliability out of the box.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngineered In-House. Quality You Can Trust.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEvery EPAspeed 1.4 B.Tuning is proudly developed and manufactured in-house, giving us complete control over quality, performance, and reliability. Each unit is individually tested before and after casting to meet our highest standards.\u003c\/p\u003e\n\u003cp\u003eThis is our most advanced EPAspeed 1.4 B.Tuning yet — designed for real-world riding, trusted by thousands across Europe and Australia.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is in the package:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eYour EPAspeed 1.4 B.Tuning Kit includes everything you need for a fast, tool-free installation:\u003c\/p\u003e\n\u003cp\u003e1 x EPAspeed Box tuning module\u003cbr\u003e2 x Zip ties \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDimensions: 35 x 16 x 5 mm\u003cbr\u003eWeight: 9g\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003e\u003ca style=\"color: rgb(43, 0, 255);\" href=\"https:\/\/ebikespartsandaccessories.com\/collections\/epaspeed-1-4-b-tuning-for-bosch-rim-magnet-bdu38-installation-manual\"\u003eINSTALLATION MANUAL\u003c\/a\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Ebikes Parts and Accessories","offers":[{"title":"Default Title","offer_id":56967437549900,"sku":"0757284217135","price":167.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/5434\/6922\/files\/IMG_7932_2.jpg?v=1777986443","url":"https:\/\/ebikespartsandaccessories.com\/en-gb\/products\/epaspeed-1-4-b-tuning-for-bosch-du38","provider":"Ebikes Parts and Accessories","version":"1.0","type":"link"}