{"title":"BMW OBD1 \u0026 MS41 Tunes","description":"\u003cp\u003eBMW tuning for supported OBD1 applications and MS41-controlled M52\/S52 vehicles.\u003c\/p\u003e","products":[{"product_id":"ms41-custom-na-calibration-m52-s52","title":"BMW MS41 Custom Naturally Aspirated Tuning — M52\/S52","description":"\u003ch2\u003eBMW MS41 Custom Naturally Aspirated Calibration\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis is custom calibration work for the vehicle's current hardware and fuel—not an off-the-shelf file.\u003c\/strong\u003e Built for modified naturally aspirated M52\/S52 combinations using the Siemens MS41 ECU.\u003c\/p\u003e\n\u003ch3\u003eScheduled Calibration Block\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour purchase reserves one scheduled calibration block of up to \u003cstrong\u003e3 hours\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe block includes setup review, connection time, datalog review, calibration changes, revisions, and customer communication during the appointment.\u003c\/li\u003e\n\u003cli\u003eSessions are scheduled in Eastern Time. Purchasing does not create an open-ended support window.\u003c\/li\u003e\n\u003cli\u003eIf the work exceeds the included block, additional time must be purchased and scheduled before calibration continues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel, ignition, VANOS, throttle response, and drivability calibration where supported\u003c\/li\u003e\n\u003cli\u003eSupport for common naturally aspirated hardware combinations\u003c\/li\u003e\n\u003cli\u003eRemote, local, or scheduled dyno calibration workflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAfter purchase and scheduling\u003c\/h3\u003e\n\u003cp\u003eOur team will email the address used at checkout to confirm the vehicle, hardware, fuel, tuning goals, and an available appointment time. Text or phone follow-up may be used when needed. Tuning sessions are scheduled in Eastern Time.\u003c\/p\u003e\n\u003ch3\u003eVehicle Readiness\u003c\/h3\u003e\n\u003cp\u003eThe vehicle must be mechanically complete, free from vacuum leaks and active faults, and ready to make repeatable logs before the appointment.\u003c\/p\u003e\n\u003cp\u003eVehicle-related troubleshooting is not free tuning time. Mechanical issues, wiring faults, boost or vacuum leaks, fueling limitations, overheating, incorrect sensor data, incomplete installations, or connection problems may prevent completion within the purchased block. Remaining work will be scheduled after the issue is corrected, and additional time may be required.\u003c\/p\u003e\n\u003ch3\u003eAdditional Time\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemote calibration or diagnostic support: \u003cstrong\u003e$100 per hour\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLocal or dyno calibration support: \u003cstrong\u003e$125 per hour\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional time is sold in one-hour increments and must be scheduled. Dyno rental, flashing licenses, cables, interfaces, and third-party software are separate unless the order specifically states otherwise.\u003c\/p\u003e\n\u003ch3\u003eHardware Changes\u003c\/h3\u003e\n\u003cp\u003eThe calibration covers the configuration submitted for this order. Changes to the engine, turbo or supercharger, injectors, fuel system, MAF\/MAP sensor, fuel, or other major power hardware may require additional calibration time or a new service.\u003c\/p\u003e\u003ch3\u003eWhy Undisputed\u003c\/h3\u003e\n\u003cp\u003eUndisputed brings professional calibration experience developed since 2017 across factory and standalone engine management, multiple fuel combinations, daily-driven street cars, and serious track builds—including 800+ horsepower applications for customers in the United States and abroad. Our standard is clear communication, useful data, clean drivability, and calibration decisions built around the actual vehicle.\u003c\/p\u003e\n\u003cp\u003eSpecific power is never guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits.\u003c\/p\u003e","brand":"Undisputed","offers":[{"title":"Default Title","offer_id":53394134565163,"sku":"UND-MS41-NA-CUSTOM","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/undisputed-ms41-naturally-aspirated-box-v2.png?v=1788963479"},{"product_id":"ms41-custom-fi-calibration-m52-s52","title":"BMW MS41 Custom Forced-Induction Tuning — M52\/S52","description":"\u003ch2\u003eBMW MS41 Custom Forced-Induction Calibration\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis is custom calibration work for the vehicle's current hardware and fuel—not an off-the-shelf file.\u003c\/strong\u003e Built for turbocharged and supercharged M52\/S52 combinations using the Siemens MS41 ECU.\u003c\/p\u003e\n\u003ch3\u003eScheduled Calibration Block\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour purchase reserves one scheduled calibration block of up to \u003cstrong\u003e3 hours\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe block includes setup review, connection time, datalog review, calibration changes, revisions, and customer communication during the appointment.\u003c\/li\u003e\n\u003cli\u003eSessions are scheduled in Eastern Time. Purchasing does not create an open-ended support window.\u003c\/li\u003e\n\u003cli\u003eIf the work exceeds the included block, additional time must be purchased and scheduled before calibration continues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel, ignition, VANOS, boost-related load control, and drivability calibration where supported\u003c\/li\u003e\n\u003cli\u003eRemote, local, or scheduled dyno calibration workflow\u003c\/li\u003e\n\u003cli\u003eCalibration for the approved hardware and fuel configuration supplied with the order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAfter purchase and scheduling\u003c\/h3\u003e\n\u003cp\u003eOur team will email the address used at checkout to confirm the vehicle, hardware, fuel, tuning goals, and an available appointment time. Text or phone follow-up may be used when needed. Tuning sessions are scheduled in Eastern Time.\u003c\/p\u003e\n\u003ch3\u003eVehicle Readiness\u003c\/h3\u003e\n\u003cp\u003eThe vehicle must be mechanically complete, safe to operate, and ready to make repeatable logs before the appointment.\u003c\/p\u003e\n\u003cp\u003eVehicle-related troubleshooting is not free tuning time. Mechanical issues, wiring faults, boost or vacuum leaks, fueling limitations, overheating, incorrect sensor data, incomplete installations, or connection problems may prevent completion within the purchased block. Remaining work will be scheduled after the issue is corrected, and additional time may be required.\u003c\/p\u003e\n\u003ch3\u003eAdditional Time\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemote calibration or diagnostic support: \u003cstrong\u003e$100 per hour\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLocal or dyno calibration support: \u003cstrong\u003e$125 per hour\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional time is sold in one-hour increments and must be scheduled. Dyno rental, flashing licenses, cables, interfaces, and third-party software are separate unless the order specifically states otherwise.\u003c\/p\u003e\n\u003ch3\u003eHardware Changes\u003c\/h3\u003e\n\u003cp\u003eThe calibration covers the configuration submitted for this order. Changes to the engine, turbo or supercharger, injectors, fuel system, MAF\/MAP sensor, fuel, or other major power hardware may require additional calibration time or a new service.\u003c\/p\u003e\u003ch3\u003eWhy Undisputed\u003c\/h3\u003e\n\u003cp\u003eUndisputed brings professional calibration experience developed since 2017 across factory and standalone engine management, multiple fuel combinations, daily-driven street cars, and serious track builds—including 800+ horsepower applications for customers in the United States and abroad. Our standard is clear communication, useful data, clean drivability, and calibration decisions built around the actual vehicle.\u003c\/p\u003e\n\u003cp\u003eSpecific power is never guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits.\u003c\/p\u003e","brand":"Undisputed","offers":[{"title":"Default Title","offer_id":53394134597931,"sku":"UND-MS41-FI-CUSTOM","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/undisputed-ms41-forced-induction-box-v2.png?v=1788963459"},{"product_id":"bmw-m50-s50-custom-tuning-obd1-e36","title":"BMW M50\/S50 Custom Tuning — OBD1 E36","description":"\u003ch2\u003eBMW M50\/S50 custom tuning, built around your car\u003c\/h2\u003e\n\u003cp\u003eThis is a true Undisputed custom calibration for the vehicle, hardware, fuel, transmission, and goals confirmed after checkout. It is not a generic one-file-fits-all map. Choose the naturally aspirated or forced-induction path for the build you actually have.\u003c\/p\u003e\n\u003ch3\u003eSupported applications\u003c\/h3\u003e\n\u003cp\u003eOBD1 BMW M50 and S50 applications, including 1993–1995 E36 builds using supported factory DMEs. Swap and non-standard applications are reviewed before scheduling.\u003c\/p\u003e\n\u003ch3\u003eIncluded service\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePre-session build and readiness review\u003c\/li\u003e\n\u003cli\u003eOne confirmed hardware configuration and one primary fuel\/map\u003c\/li\u003e\n\u003cli\u003eScheduled remote connection and datalog review\u003c\/li\u003e\n\u003cli\u003eCalibration changes and revisions completed inside the purchased time block\u003c\/li\u003e\n\u003cli\u003eDirect communication with the Undisputed team throughout the scheduled session\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAfter purchase and scheduling\u003c\/h3\u003e\n\u003cp\u003eOur team will email the address used at checkout to confirm the vehicle, hardware, fuel, tuning goals, and an available appointment time. Text or phone follow-up may be used when needed. Tuning sessions are scheduled in Eastern Time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded time:\u003c\/strong\u003e Naturally Aspirated — up to 3 hours. Forced Induction — up to 5 hours. Time includes setup review, connecting, logging, calibration changes, revisions, troubleshooting, and communication.\u003c\/p\u003e\n\n\u003ch3\u003eBefore the appointment\u003c\/h3\u003e\n\u003cp\u003eThe car must be mechanically healthy, leak-free, fueled correctly, and ready to log. You will need a compatible computer\/device, reliable internet, the required flashing platform, and any required cable or adapter. Hardware, dyno time, software licenses, unlock services, and repairs are not included unless specifically listed.\u003c\/p\u003e\n\u003ch3\u003eWhy Undisputed\u003c\/h3\u003e\n\u003cp\u003eUndisputed brings professional calibration experience developed since 2017 across factory and standalone engine management, multiple fuel combinations, daily-driven street cars, and serious track builds—including 800+ horsepower applications for customers in the United States and abroad. Our standard is clear communication, useful data, clean drivability, and calibration decisions built around the actual vehicle.\u003c\/p\u003e\n\u003ch3\u003eTime and revision policy\u003c\/h3\u003e\n\u003cp\u003eThis is a scheduled professional service, not an open-ended support window. Mechanical issues, connection problems, incomplete hardware, or incorrect fuel can consume the purchased time and may prevent completion. Work beyond the included block must be purchased through the Additional Calibration Time product and scheduled before more tuning continues. New turbos, injectors, fuel systems, fuels, engine combinations, or other major hardware changes may require additional time or a new tune.\u003c\/p\u003e\n\u003cp\u003eSpecific power is never guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits. The customer is responsible for legal and emissions compliance; Undisputed will not calibrate public-road vehicles to defeat required emissions or safety systems.\u003c\/p\u003e","brand":"Undisputed Racing","offers":[{"title":"Naturally Aspirated","offer_id":55510306259243,"sku":"UND-M50S50-NA","price":349.99,"currency_code":"USD","in_stock":true},{"title":"Forced Induction","offer_id":55510306292011,"sku":"UND-M50S50-FI","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/undisputed-m50-s50-custom-tune-box.png?v=1788965254"}],"url":"https:\/\/undisputedracing.com\/collections\/bmw-obd1-ms41-tunes.oembed","provider":"Undisputed Racing","version":"1.0","type":"link"}