{"title":"Holley EFI Tuning \u0026 Calibration Services","description":"\u003ch2\u003eHolley EFI Tuning, Startup Files and Performance Calibration\u003c\/h2\u003e\u003cp\u003eShop DD84 Holley EFI services for naturally aspirated, cammed, E85, flex-fuel, boosted and LS-swap combinations. Available services include startup calibration files, remote tuning, in-person street tuning, boost control, transmission calibration and system diagnostics.\u003c\/p\u003e\u003cp\u003eDD84 supports performance-focused Holley EFI setups with attention to startup quality, idle control, drivability, fueling, ignition strategy and safe operating limits. Select the service that matches your combination, then complete checkout to begin intake and scheduling.\u003c\/p\u003e","products":[{"product_id":"holley-efi-ls-na-startup-calibration","title":"Holley EFI LS NA Startup Calibration File","description":"\u003ch2\u003eCustom Holley EFI Startup File for Naturally Aspirated LS Builds\u003c\/h2\u003e\u003cp\u003eThis service provides an initial custom calibration for a mechanically complete naturally aspirated LS combination using Holley Terminator X, Terminator X Max, HP, or Dominator EFI.\u003c\/p\u003e\u003ch3\u003eIncluded\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngine displacement and firing-order configuration\u003c\/li\u003e\n\u003cli\u003eInjector and fuel-system setup review\u003c\/li\u003e\n\u003cli\u003eInitial startup, idle, cranking-fuel, and base ignition settings\u003c\/li\u003e\n\u003cli\u003eOne startup datalog review and one corrective revision\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eThis is a startup calibration file, not a completed remote or street tune.\u003c\/strong\u003e Final drivability and wide-open-throttle calibration require the appropriate tuning package.\u003c\/p\u003e\u003ch3\u003eCustomer Requirements\u003c\/h3\u003e\u003cp\u003eProvide the current Holley Global File, engine specifications, injector data, fuel type, ignition system, MAP sensor, throttle-body information, transmission details, and all relevant modifications. Wiring, fuel pressure, sensor operation, and mechanical condition must be correct before calibration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePurchase this service to begin intake and file review.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Custom File Calibration","offer_id":45655974314031,"sku":"DD84-HOLLEY-NA-LS-START-275","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732572"},{"product_id":"holley-efi-cammed-ls-startup-calibration","title":"Holley EFI Cammed LS Startup Calibration File","description":"\u003ch2\u003eCustom Holley EFI Startup File for Cammed and Modified LS Builds\u003c\/h2\u003e\u003cp\u003eThis service provides an initial custom calibration for a mechanically complete cammed or modified naturally aspirated LS combination using Holley Terminator X, Terminator X Max, HP, or Dominator EFI.\u003c\/p\u003e\u003ch3\u003eIncluded\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngine, camshaft, injector, and fuel-system configuration review\u003c\/li\u003e\n\u003cli\u003eInitial cranking fuel, startup enrichment, idle airflow, and base ignition settings\u003c\/li\u003e\n\u003cli\u003eCam-specific idle strategy based on the supplied cam card and combination\u003c\/li\u003e\n\u003cli\u003eOne startup datalog review and one corrective revision\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eThis is a startup calibration file, not a completed remote or street tune.\u003c\/strong\u003e Final drivability, load, and wide-open-throttle calibration require the appropriate tuning package.\u003c\/p\u003e\u003ch3\u003eCustomer Requirements\u003c\/h3\u003e\u003cp\u003eProvide the current Holley Global File, complete engine specifications, cam card, injector data, fuel type, ignition system, MAP sensor, throttle body, transmission details, and all modifications. Wiring, fuel pressure, sensors, and mechanical condition must be verified before calibration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePurchase this service to begin intake and file review.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Custom File Calibration","offer_id":45655975886895,"sku":"DD84-HOLLEY-CAM-LS-START-399","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732572"},{"product_id":"dd84-holley-efi-4l80e-transmission-configuration","title":"DD84 Holley EFI 4L80E Custom Transmission Calibration","description":"\u003ch2\u003eCustom Holley EFI 4L80E Transmission Calibration\u003c\/h2\u003e\u003cp\u003eSend DD84 your current Holley EFI Global File and complete transmission setup. We will review the file and prepare a customer-specific 4L80E transmission-control baseline for compatible Holley EFI systems.\u003c\/p\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003ePurchase this calibration service.\u003c\/li\u003e\n\u003cli\u003eEmail your Holley Global File and complete transmission information to \u003ca href=\"mailto:downdirty84llc@gmail.com\"\u003e\u003cstrong\u003edowndirty84llc@gmail.com\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eUse the subject line: \u003cstrong\u003eHolley 4L80E Calibration – Order #[order number] – [name]\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDD84 returns the calibrated file electronically after review.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eTypical turnaround:\u003c\/strong\u003e 24–48 business hours after all required information is received.\u003c\/p\u003e\u003ch3\u003eIncluded\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReview of the customer-supplied Holley EFI file\u003c\/li\u003e\n\u003cli\u003eBaseline shift scheduling\u003c\/li\u003e\n\u003cli\u003eStarting line-pressure strategy\u003c\/li\u003e\n\u003cli\u003eTorque-converter clutch control setup\u003c\/li\u003e\n\u003cli\u003ePart-throttle and wide-open-throttle shift starting points\u003c\/li\u003e\n\u003cli\u003eOne initial calibrated file returned by email\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEmail With Your File\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShopify order number\u003c\/li\u003e\n\u003cli\u003eHolley ECU model, software version, and firmware\u003c\/li\u003e\n\u003cli\u003eVehicle year, make, model, approximate weight, and intended use\u003c\/li\u003e\n\u003cli\u003eEngine combination and estimated horsepower and torque\u003c\/li\u003e\n\u003cli\u003e4L80E year, internal modifications, valve-body type, and shift-control configuration\u003c\/li\u003e\n\u003cli\u003eConverter stall speed and lockup configuration\u003c\/li\u003e\n\u003cli\u003eRear gear ratio and loaded tire diameter\u003c\/li\u003e\n\u003cli\u003eInput\/output speed-sensor setup, range selection, brake-switch input, and temperature-sensor details\u003c\/li\u003e\n\u003cli\u003eDesired shift feel, wide-open-throttle shift RPM, lockup strategy, current problems, and datalogs when available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNot Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngine fuel or ignition calibration\u003c\/li\u003e\n\u003cli\u003eUnlimited revisions or ongoing datalog support\u003c\/li\u003e\n\u003cli\u003eMechanical diagnosis or repair of the transmission\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSafety notice:\u003c\/strong\u003e This is a starting calibration, not a universal finished transmission tune. Safe line pressure, shift timing, and converter-clutch operation depend on the transmission build, valve body, clutch clearances, converter, power level, vehicle weight, and speed-sensor setup. Final settings must be validated through controlled testing and datalogs.\u003c\/p\u003e\u003cp\u003eDown Dirty 84 LLC is an independent calibration provider and is not affiliated with or endorsed by Holley Performance Products or General Motors. Compatibility and the accuracy of submitted information are the purchaser’s responsibility. Sales are final after calibration work begins except where required by law.\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Custom File Calibration","offer_id":45655977295919,"sku":"DD84-HOLLEY-4L80E-CONFIG-001","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732572"},{"product_id":"dd84-holley-efi-boost-control-starter-package","title":"DD84 Holley EFI Custom Boost-Control Calibration","description":"\u003ch2\u003eCustom Holley EFI Boost-Control Calibration\u003c\/h2\u003e\u003cp\u003eSend DD84 your current Holley EFI Global File and complete power-adder setup. We will review the file and prepare a conservative customer-specific boost-control starting strategy for compatible Holley EFI systems.\u003c\/p\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003ePurchase this calibration service.\u003c\/li\u003e\n\u003cli\u003eEmail your Holley Global File and complete boost-control information to \u003ca href=\"mailto:downdirty84llc@gmail.com\"\u003e\u003cstrong\u003edowndirty84llc@gmail.com\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eUse the subject line: \u003cstrong\u003eHolley Boost Calibration – Order #[order number] – [name]\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDD84 returns the calibrated file electronically after review.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eTypical turnaround:\u003c\/strong\u003e 24–48 business hours after all required information is received.\u003c\/p\u003e\u003ch3\u003eIncluded\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReview of the customer-supplied Holley EFI file\u003c\/li\u003e\n\u003cli\u003eBaseline boost-control configuration\u003c\/li\u003e\n\u003cli\u003eWastegate dome-pressure and control-channel starting structure\u003c\/li\u003e\n\u003cli\u003eBoost-by-gear or boost-by-speed framework where supported\u003c\/li\u003e\n\u003cli\u003eOverboost protection and fail-safe setup review\u003c\/li\u003e\n\u003cli\u003eOne initial calibrated file returned by email\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEmail With Your File\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShopify order number\u003c\/li\u003e\n\u003cli\u003eHolley ECU model, software version, and firmware\u003c\/li\u003e\n\u003cli\u003eVehicle year, make, model, approximate weight, transmission, rear gear, and tire size\u003c\/li\u003e\n\u003cli\u003eEngine displacement, compression ratio, cylinder heads, camshaft specifications, and fuel type\u003c\/li\u003e\n\u003cli\u003eInjector data, base fuel pressure, fuel-pump configuration, and horsepower target\u003c\/li\u003e\n\u003cli\u003eTurbocharger or supercharger specifications\u003c\/li\u003e\n\u003cli\u003eWastegate size, spring pressure, dome-pressure sensor, control solenoids, and exact plumbing layout\u003c\/li\u003e\n\u003cli\u003eCO2 or compressor-air supply pressure when used\u003c\/li\u003e\n\u003cli\u003eMAP sensor range, target boost, boost-by-gear or speed goals, and requested safety limits\u003c\/li\u003e\n\u003cli\u003eCurrent problems and low-boost datalogs when available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNot Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFinal engine fuel or ignition tuning under boost\u003c\/li\u003e\n\u003cli\u003eUnlimited revisions or ongoing datalog support\u003c\/li\u003e\n\u003cli\u003eMechanical diagnosis of wastegates, solenoids, plumbing, or fuel-system limitations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSafety notice:\u003c\/strong\u003e This package does not establish final safe fuel or ignition values for a specific engine. Incorrect wastegate plumbing, solenoid configuration, targets, or fail-safe settings can cause uncontrolled boost and severe engine damage. Testing must begin at minimum mechanical boost and proceed in controlled increments while monitoring fuel pressure, air\/fuel ratio, and all engine-protection channels.\u003c\/p\u003e\u003cp\u003eDown Dirty 84 LLC is an independent calibration provider and is not affiliated with or endorsed by Holley Performance Products. Compatibility and the accuracy of submitted information are the purchaser’s responsibility. Sales are final after calibration work begins except where required by law.\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Custom File Calibration","offer_id":45655977787439,"sku":"DD84-HOLLEY-BOOST-START-001","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732572"},{"product_id":"dd84-holley-efi-ls-calibration-tool-bundle","title":"DD84 Holley EFI Complete LS Custom Calibration Bundle","description":"\u003ch2\u003eComplete Holley EFI LS Calibration Bundle\u003c\/h2\u003e\u003cp\u003eSend DD84 your current Holley EFI Global File and complete vehicle setup. We will review the file and prepare one customer-specific startup calibration covering the applicable engine, idle, 4L80E transmission-control, and boost-control areas selected for your build.\u003c\/p\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003ePurchase the complete calibration bundle.\u003c\/li\u003e\n\u003cli\u003eEmail your Holley Global File and complete setup information to \u003ca href=\"mailto:downdirty84llc@gmail.com\"\u003e\u003cstrong\u003edowndirty84llc@gmail.com\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eUse the subject line: \u003cstrong\u003eHolley Complete Calibration – Order #[order number] – [name]\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDD84 returns the calibrated file electronically after review.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eTypical turnaround:\u003c\/strong\u003e 24–48 business hours after all required information is received. Complex or unusual combinations may require additional time.\u003c\/p\u003e\u003ch3\u003eBundle Coverage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNaturally aspirated or cammed LS startup calibration\u003c\/li\u003e\n\u003cli\u003eCranking, warm-up, idle-airflow, and idle-speed setup\u003c\/li\u003e\n\u003cli\u003eBaseline fuel and ignition calibration\u003c\/li\u003e\n\u003cli\u003e4L80E transmission-control setup when applicable\u003c\/li\u003e\n\u003cli\u003eBoost-control starting strategy when applicable\u003c\/li\u003e\n\u003cli\u003eSensor, I\/O, protection, and datalog-channel review\u003c\/li\u003e\n\u003cli\u003eOne initial calibrated file returned by email\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEmail With Your File\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShopify order number\u003c\/li\u003e\n\u003cli\u003eHolley ECU model, software version, and firmware\u003c\/li\u003e\n\u003cli\u003eVehicle year, make, model, approximate weight, and intended use\u003c\/li\u003e\n\u003cli\u003eComplete engine, camshaft, injector, fuel-system, ignition, sensor, and wideband details\u003c\/li\u003e\n\u003cli\u003eTransmission build, converter stall, rear gear ratio, and loaded tire diameter\u003c\/li\u003e\n\u003cli\u003eTurbocharger or supercharger, wastegate, solenoid, plumbing, dome-pressure, and target-boost details when applicable\u003c\/li\u003e\n\u003cli\u003eCurrent I\/O assignments, fan controls, safety limits, current problems, requested changes, and datalogs when available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNot Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDyno tuning or final wide-open-throttle validation\u003c\/li\u003e\n\u003cli\u003eUnlimited revisions or ongoing remote-tuning support\u003c\/li\u003e\n\u003cli\u003eMechanical diagnosis, wiring repair, or hardware installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBundle value:\u003c\/strong\u003e Purchased separately, the included calibration services total $576. This bundle combines them for $399 when multiple calibration areas are required for one Holley EFI file.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSafety notice:\u003c\/strong\u003e This is a customer-specific startup calibration, not a completed dyno tune. Verify fuel pressure, oil pressure, timing synchronization, wideband operation, sensor calibration, speed signals, I\/O assignments, boost plumbing, rev limits, and all safety settings before operating the vehicle under load.\u003c\/p\u003e\u003cp\u003eDown Dirty 84 LLC is an independent calibration provider and is not affiliated with or endorsed by Holley Performance Products or General Motors. Compatibility and the accuracy of submitted information are the purchaser’s responsibility. Sales are final after calibration work begins except where required by law.\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Complete Custom Calibration Bundle","offer_id":45655978573871,"sku":"DD84-HOLLEY-LS-BUNDLE-001","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732572"},{"product_id":"holley-efi-tuning-services-remote-street","title":"Holley EFI Tuning Services | Remote \u0026 In-Person","description":"\u003ch2\u003eProfessional Holley EFI Tuning for Street and Performance Builds\u003c\/h2\u003e\u003cp\u003eChoose the package that matches your naturally aspirated, cammed, E85, flex-fuel, or boosted combination. DD84 provides custom Holley EFI calibration support focused on reliable startup, idle quality, drivability, fueling, ignition strategy, and safe system operation.\u003c\/p\u003e\u003ch3\u003eService Packages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStartup Calibration File Only:\u003c\/strong\u003e Initial ECU configuration to start and idle a mechanically complete vehicle. This is not a finished street tune.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote NA Base Tune:\u003c\/strong\u003e Remote calibration for stock or lightly modified naturally aspirated combinations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Cammed\/Modified NA Tune:\u003c\/strong\u003e For camshaft, injector, intake, exhaust, and other airflow modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote E85\/Flex-Fuel NA Tune:\u003c\/strong\u003e Includes ethanol-content and fuel-strategy configuration for compatible systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn-Person NA Street Tune:\u003c\/strong\u003e Street drivability calibration performed in person by appointment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn-Person Boosted Street Tune:\u003c\/strong\u003e For turbocharged or supercharged street combinations after fuel-system and mechanical verification.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBefore Tuning\u003c\/h3\u003e\u003cp\u003eThe vehicle must have correct wiring, stable fuel pressure, verified sensors, no mechanical faults, and a safe operating condition. Additional troubleshooting, wiring repair, travel, dyno time, advanced boost control, nitrous strategy, or transmission work may require a separate quote.\u003c\/p\u003e\u003ch3\u003eWhat Happens After Checkout\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eYou receive vehicle and combination intake instructions.\u003c\/li\u003e\n\u003cli\u003eYour ECU, engine, fuel system, and hardware are reviewed.\u003c\/li\u003e\n\u003cli\u003eFiles, datalogs, or appointment details are exchanged based on the selected package.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eChoose your service package and checkout to reserve your calibration.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down Dirty 84 LLC","offers":[{"title":"Startup Calibration File Only","offer_id":45763115450415,"sku":"DD84-HOLLEY-STARTUP","price":275.0,"currency_code":"USD","in_stock":true},{"title":"Remote NA Base Tune","offer_id":45763115483183,"sku":"DD84-HOLLEY-REMOTE-NA","price":349.0,"currency_code":"USD","in_stock":true},{"title":"Remote Cammed\/Modified NA Tune","offer_id":45763115515951,"sku":"DD84-HOLLEY-REMOTE-CAM","price":399.0,"currency_code":"USD","in_stock":true},{"title":"Remote E85\/Flex-Fuel NA Tune","offer_id":45763115548719,"sku":"DD84-HOLLEY-REMOTE-E85","price":499.0,"currency_code":"USD","in_stock":true},{"title":"In-Person NA Street Tune","offer_id":45763115581487,"sku":"DD84-HOLLEY-STREET-NA","price":550.0,"currency_code":"USD","in_stock":true},{"title":"In-Person Boosted Street Tune","offer_id":45763115614255,"sku":"DD84-HOLLEY-STREET-BOOST","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/files\/dd84-efi-tuning-pricing_02888c9b-e919-4f09-ae99-308cfbe75d8f.jpg?v=1779726124"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2005\/3295\/collections\/down-dirty-84-holley-efi-digital-tools-logo.jpg?v=1784732584","url":"https:\/\/shop.downdirty84llc.com\/collections\/holley-efi-tuning-calibration-services.oembed","provider":"Down Dirty 84 LLC","version":"1.0","type":"link"}