{"title":"Mercedes M271\/M274 Tunes","description":"\u003cp\u003eMercedes four-cylinder turbo tuning for supported SIM271 and MED17.7 applications.\u003c\/p\u003e","products":[{"product_id":"mercedes-m271-m274-custom-tuning-sim271-med17-7","title":"Mercedes M271\/M274 Custom Tuning — SIM271 \u0026 MED17.7","description":"\u003ch2\u003eMercedes M271\/M274 Custom Tuning\u003c\/h2\u003e\n\u003cp\u003eCustom calibration for supported turbocharged Mercedes-Benz four-cylinder applications, developed around the installed hardware, fuel, transmission, and intended use.\u003c\/p\u003e\n\u003ch3\u003eSupported applications\u003c\/h3\u003e\n\u003cp\u003eCommon C-Class, E-Class, SLK\/SLC, GLC, CLA and related M271 or M274 applications. Exact support depends on controller and software version.\u003c\/p\u003e\n\u003ch3\u003eSupported control units and access\u003c\/h3\u003e\n\u003cp\u003eCommon families include Continental SIM271KE\/SIM271DE and Bosch MED17.7.2 or related MED17.7 variants. HexProg II publishes support for SIM271 and MED17.7 families; StageX lists DTC and mappack coverage for these controllers. Exact ECU\/TCU identification, software version, and read\/write method are confirmed after purchase. Some vehicles can be flashed through OBD; others may require bench or boot access.\u003c\/p\u003e\n\u003ch3\u003eChoose the service level\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration Level:\u003c\/strong\u003e Select the option that matches the installed hardware. Stage names describe service scope, not a guaranteed power figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain Service:\u003c\/strong\u003e Engine-only or engine plus a supported transmission calibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTC Review:\u003c\/strong\u003e Choose no DTC changes or a review of supported non-emissions diagnostic codes. This option does not include disabling required emissions or safety systems on street vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded service\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuild, fuel, hardware, and stock-file review\u003c\/li\u003e\n\u003cli\u003eOne confirmed hardware configuration and one primary fuel setup\u003c\/li\u003e\n\u003cli\u003eScheduled remote connection or file workflow, datalog review, calibration changes, and revisions inside the purchased block\u003c\/li\u003e\n\u003cli\u003eFuel, ignition, airflow\/load, torque, boost, throttle, drivability, and supported transmission strategies as applicable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded time:\u003c\/strong\u003e Stage 1 — up to 3 hours. Stage 2 — up to 4 hours. Upgraded Turbo — up to 5 hours. Time includes setup review, connecting, logging, calibration work, revisions, troubleshooting, and communication.\u003c\/p\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, ECU\/TCU, hardware, fuel, tuning goals, required files, and an available appointment time. Text or phone follow-up may be used when needed. Sessions are scheduled in Eastern Time.\u003c\/p\u003e\n\u003ch3\u003eBefore the appointment\u003c\/h3\u003e\n\u003cp\u003eThe vehicle must be mechanically complete, leak-free, fueled correctly, and ready to produce repeatable logs. A compatible interface, cable, software license, ECU\/TCU unlock, bench service, and dyno rental are separate unless specifically stated.\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 faults, communication problems, incomplete hardware, or incorrect fuel can consume the purchased time. Work beyond the included block must be purchased as Additional Calibration Time and scheduled before tuning continues. Major hardware or fuel changes may require additional time or a new calibration.\u003c\/p\u003e\n\u003cp\u003eSpecific power is not guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits. Customers are responsible for legal and emissions compliance.\u003c\/p\u003e","brand":"Undisputed Racing","offers":[{"title":"Stage 1 \/ Stock Hardware \/ Engine Only \/ No DTC Changes","offer_id":55510754066731,"sku":"UND-MB271274-S1-ENG-STD","price":349.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 \/ Stock Hardware \/ Engine Only \/ Supported Non-Emissions DTC Review","offer_id":55510754099499,"sku":"UND-MB271274-S1-ENG-DTC","price":399.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 \/ Stock Hardware \/ Engine + Supported Transmission \/ No DTC Changes","offer_id":55510754132267,"sku":"UND-MB271274-S1-TCU-STD","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 \/ Stock Hardware \/ Engine + Supported Transmission \/ Supported Non-Emissions DTC Review","offer_id":55510754165035,"sku":"UND-MB271274-S1-TCU-DTC","price":549.99,"currency_code":"USD","in_stock":true},{"title":"Stage 2 \/ Bolt-Ons \/ Engine Only \/ No DTC Changes","offer_id":55510754197803,"sku":"UND-MB271274-S2-ENG-STD","price":449.99,"currency_code":"USD","in_stock":true},{"title":"Stage 2 \/ Bolt-Ons \/ Engine Only \/ Supported Non-Emissions DTC Review","offer_id":55510754230571,"sku":"UND-MB271274-S2-ENG-DTC","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Stage 2 \/ Bolt-Ons \/ Engine + Supported Transmission \/ No DTC Changes","offer_id":55510754263339,"sku":"UND-MB271274-S2-TCU-STD","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Stage 2 \/ Bolt-Ons \/ Engine + Supported Transmission \/ Supported Non-Emissions DTC Review","offer_id":55510754296107,"sku":"UND-MB271274-S2-TCU-DTC","price":649.99,"currency_code":"USD","in_stock":true},{"title":"Upgraded Turbo \/ Engine Only \/ No DTC Changes","offer_id":55510754328875,"sku":"UND-MB271274-UPG-ENG-STD","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Upgraded Turbo \/ Engine Only \/ Supported Non-Emissions DTC Review","offer_id":55510754361643,"sku":"UND-MB271274-UPG-ENG-DTC","price":649.99,"currency_code":"USD","in_stock":true},{"title":"Upgraded Turbo \/ Engine + Supported Transmission \/ No DTC Changes","offer_id":55510754394411,"sku":"UND-MB271274-UPG-TCU-STD","price":749.99,"currency_code":"USD","in_stock":true},{"title":"Upgraded Turbo \/ Engine + Supported Transmission \/ Supported Non-Emissions DTC Review","offer_id":55510754427179,"sku":"UND-MB271274-UPG-TCU-DTC","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/mercedes-m271-m274-custom-tune.png?v=1788969443"}],"url":"https:\/\/undisputedracing.com\/collections\/mercedes-m271-m274-tunes.oembed","provider":"Undisputed Racing","version":"1.0","type":"link"}