Harley Fuel Injection Tuning Systems
Harley-Davidson Fuel Injection Tuning Systems at JJ Motorsports
Optimize your Harley's EFI performance with premium tuning systems from JJ Motorsports, featuring advanced ECU controllers and auto-tune modules for precise fuel mapping, throttle-by-wire integration, and dyno-level gains on Twin Cam, Milwaukee-Eight Softail, and Touring models. These plug-and-play kits deliver smoother power delivery, better throttle response, and self-learning calibration without dyno visits.
Shop Daytona Twin Tec and ThunderMax EFI tuning systems for race-proven reliability. Explore related categories such as Harley air and fuel for air cleaners and jets, or Harley for exhaust and cams to complete your EFI upgrade and unleash V-Twin potential.
Top Harley-Davidson Fuel Injection Tuning Systems
- Daytona Twin Tec LLC Fuel Injector Generation 6 Controller Twin Cam 17700 – Gen 6 EFI controller for Twin Cam engines; USB tuning with closed-loop O2 feedback for custom mapping.
- ThunderMax ECM with Auto-Tune 14-16 FLT 309-562 – Plug-and-play ECM for 2014-2016 Touring; self-tuning with touchscreen interface for throttle-by-wire models.
- ThunderMax ECU with Auto-Tune 18 Softail 309-589 – Auto-tuning ECU for 2018 Softail; seamless integration with Milwaukee-Eight for instant gains.
- ThunderMax ECM with Auto-Tune Non Throttle by Wire 309-460 – ECM for non-TBW Harleys; automatic fuel tuning for cleaner running and more torque.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
DAYTONA TWIN TEC LLC Fuel Injector Generation-6 Controller - Twin Cam 17700
DAYTONA TWIN TEC LLC
$1,285.95Kit includes TCFI plug in fuel injection controller, USB interface for PC, software, WEGO IID dual channel wide band exhaust gas oxygen sensor interface, two Bosch LSU 4.2 wide band exhaust oxygen sensors and two 18 x 1.5mm weld nuts for exhaust pipes,...10202383- SKU:
- 10202383
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- BASE COLOR:
- WHITE
- FEATURE:
- INCLUDES OXYGEN SENSOR
- OXYGEN SENSOR PLUG SIZE:
- 18,00 MM (0,71')
- PRODUCT NAME:
- FUEL INJECTION CONTROLLER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WHITE
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- PRE-PROGRAMMED
- PROGRAMMING:
- PROGRAMMABLE
- BASE COLOR:
- BLACK
- OXYGEN SENSOR PLUG SIZE IMPERIAL:
- 0.71'
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- COLOR/FINISH:
- BLACK
- OXYGEN SENSOR PLUG SIZE METRIC:
- 18.00 MM
- UNITS:
- KIT
$1,285.95 -
THUNDERMAX ECM with Auto Tune - '11 FXST 309-361
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10201848- SKU:
- 10201848
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PROGRAMMING:
- DOWNLOADABLE MAPS
- UNITS:
- KIT
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- TYPE:
- AIR/FUEL RATIO
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
$1,088.95 -
THUNDERMAX ECM with Auto Tune - '02-'13 V-Rod 309-466
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10201853- SKU:
- 10201853
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PROGRAMMING:
- DOWNLOADABLE MAPS
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- TYPE:
- AIR/FUEL RATIO
- RIDING STYLE:
- STREET
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
$1,088.95 -
THUNDERMAX ECM with Auto Tune - '14-'16 FLT 309-562
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10202118- SKU:
- 10202118
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BASE COLOR:
- BLACK
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- DOWNLOADABLE MAPS
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- OXYGEN SENSOR BAND:
- WIDE-BAND
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$1,088.95 -
THUNDERMAX ECM with Auto Tune - Non-Throttle By Wire 309-460
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10201851- SKU:
- 10201851
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PROGRAMMING:
- DOWNLOADABLE MAPS
- RIDING STYLE:
- STREET
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- BASE COLOR:
- BLACK
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
$1,088.95 -
THUNDERMAX Electronically Commutated Motor with Auto Tune - '16-'17 Softail 309-563
THUNDERMAX
$1,088.952 wide-band Bosch 5-wire oxygen sensors (18 mm) with AutoTune connection harness, ThunderMax quick start easy install and printable comprehensive user’s manual, Never outgrow it - easily accomodates bike change, No Dyno required - automatically tunes for...10202850- SKU:
- 10202850
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
$1,088.95 -
THUNDERMAX Module with Auto Tune - '08-'13 FLHT 309-362
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10200836- SKU:
- 10200836
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PROGRAMMING:
- DOWNLOADABLE MAPS
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- RIDING STYLE:
- STREET
- OXYGEN SENSOR BAND:
- WIDE-BAND
$1,088.95 -
THUNDERMAX ECM with Auto Tune 309-382
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10202360- SKU:
- 10202360
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- MODEL:
- THUNDERMAX
- OXYGEN SENSOR BAND:
- WIDE-BAND
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- RIDING STYLE:
- STREET
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- TYPE:
- AIR/FUEL RATIO
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- DOWNLOADABLE MAPS
$1,088.95 -
THUNDERMAX ECM with Auto Tune 309-485
THUNDERMAX
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...10202361- SKU:
- 10202361
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MODEL:
- THUNDERMAX
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- DOWNLOADABLE MAPS
- RIDING STYLE:
- STREET
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
$1,088.95 -
DYNOJET Wideband Power Vision-3 Air Fuel Ratio Individual Dual WB-PV29-2
DYNOJET
$595.99Plugs into the vehicle's diagnostic port and seamlessly integrates AFR data from the included wideband O2 sensor(s) with the OEM databus, When used in conjunction with Power Vision CX, you can view and datalog wideband O2 data alongside custom channels...10203200- SKU:
- 10203200
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- MODEL:
- POWER VISION CX
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- TUNING SYSTEM
- TYPE:
- WIDE-BAND
- UNITS:
- EACH
$595.99 -
On Sale
DYNOJET Wideband Power Vision-3 Air Fuel Ratio Individual Dual 500 WB-PV29-3
DYNOJET
MSRP: $758.88Now: $500.00Was: $758.88Plugs into the vehicle's diagnostic port and seamlessly integrates AFR data from the included wideband O2 sensor(s) with the OEM databus, When used in conjunction with Power Vision CX, you can view and datalog wideband O2 data alongside custom channels...10203201- SKU:
- 10203201
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- MODEL:
- POWER VISION CX
- RIDING STYLE:
- STREET
- TYPE:
- WIDE-BAND
- PRODUCT NAME:
- TUNING SYSTEM
- UNITS:
- EACH
- BASE COLOR:
- BLACK
MSRP: $758.88Now: $500.00Was: $758.88 -
DYNOJET Auto Tune Power Commander V - '10-'13 FLHT/X AT-100B
DYNOJET
$577.77Makes it possible to adjust cruise for best fuel economy as well as larger throttle openings for peak power, User can specify what air/fuel ratio to make each rpm and throttle position percentage combination, Includes 18mm O² sensors and power connector...10201117- SKU:
- 10201117
- Availability:
- Ships Same Business Day
- Weight:
- 1.54 LBS
- BASE COLOR:
- BLACK
- MODEL:
- POWER COMMANDER V
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- AUTOTUNE
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- FEATURE:
- INCLUDES OXYGEN SENSOR
- PRODUCT NAME:
- TUNING MODULE
- COLOR/FINISH:
- GRAY
- COLOR/FINISH:
- WHITE
- OXYGEN SENSOR PLUG SIZE IMPERIAL:
- 0.71'
- RIDING STYLE:
- STREET
- TYPE:
- AIR/FUEL RATIO
$577.77 -
DYNOJET Power Vision Visor - Black 61300054
DYNOJET
$33.32"NutSerts" are embedded and allow you to attach the visor/quick clip to mounting systems or any other system with a 4-hole pattern, Quick-release ability to remove or attach the Power Vision to the Techmount, Shades display screen, improving screen...10202045- SKU:
- 10202045
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- POWER VISION
- PRODUCT NAME:
- VISOR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- BASE COLOR:
- BLACK
$33.32 -
DYNOJET Auto Tune Power Commander V - '12-'15 Softail/Dyna AT-101B
DYNOJET
$577.77Makes it possible to adjust cruise for best fuel economy as well as larger throttle openings for peak power, User can specify what air/fuel ratio to make each rpm and throttle position percentage combination, Includes 18mm O² sensors and power connector...10201559- SKU:
- 10201559
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- COLOR/FINISH:
- GRAY
- OXYGEN SENSOR PLUG SIZE IMPERIAL:
- 0.71'
- PRODUCT NAME:
- TUNING MODULE
- BASE COLOR:
- BLACK
- MODEL:
- POWER COMMANDER V
- TYPE:
- AIR/FUEL RATIO
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- COLOR/FINISH:
- RED
- COLOR/FINISH:
- WHITE
- FEATURE:
- INCLUDES OXYGEN SENSOR
- PROGRAMMING:
- AUTOTUNE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$577.77 -
DYNOJET Auto Tune Kit - Harley-Davidson AT-110
DYNOJET
$688.88Makes it possible to adjust cruise for best fuel economy as well as larger throttle openings for peak power, User can specify what air/fuel ratio to make each rpm and throttle position percentage combination, Includes 18mm O² sensors and power connector...10201532- SKU:
- 10201532
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- FEATURE:
- INCLUDES OXYGEN SENSOR
- MODEL:
- POWER VISION
- RIDING STYLE:
- STREET
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
- OXYGEN SENSOR PLUG SIZE:
- 18,00 MM (0,71')
- OXYGEN SENSOR PLUG SIZE METRIC:
- 18.00 MM
- PRODUCT NAME:
- TUNING MODULE
- PROGRAMMING:
- PRE-PROGRAMMED
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- EACH
$688.88 -
DYNOJET Auto Tune Kit - Harley-Davidson AT-110B
DYNOJET
$688.88Makes it possible to adjust cruise for best fuel economy as well as larger throttle openings for peak power, User can specify what air/fuel ratio to make each rpm and throttle position percentage combination, Includes 18mm O² sensors and power connector...10201533- SKU:
- 10201533
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- EACH
- OXYGEN SENSOR PLUG SIZE:
- 18,00 MM (0,71')
- OXYGEN SENSOR PLUG SIZE METRIC:
- 18.00 MM
- PRODUCT NAME:
- TUNING MODULE
- FEATURE:
- INCLUDES OXYGEN SENSOR
- MODEL:
- POWER VISION
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
- FEATURE:
- INCLUDES WELD-IN 18 MM BUNGS
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
$688.88 -
DYNOJET Power Vision Shop Kit Tuner PV-TK3R
DYNOJET
$888.88Tune multiple bikes using just one AutoTune Pro Module, Designed for shops without a Dynojet dyno or Gen4 exhaust pump, Include AutoTune Pro Module with plug-in power supply, and all necessary cables in order to tune J1850 or CAN models, Requires...10202796- SKU:
- 10202796
- Availability:
- Ships Same Business Day
- Weight:
- 4.15 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- PRODUCT NAME:
- TUNER KIT
- BASE COLOR:
- BLACK
$888.88 -
DYNOJET Power Vision Target Tune with O2 Sensor - Harley-Davidson TT-5
DYNOJET
$688.88Includes OEM style connectors to plug into factory O² harness, either 2 or 4 pin versions, Allows the factory ECM to interpret and use wideband O² sensor signals, Retains OEM closed loop and achieves adaptive fuel control strategy, Target fuel table from...10202491- SKU:
- 10202491
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- TUNING MODULE
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- BASE COLOR:
- GRAY
- BASE COLOR:
- RED
- BASE COLOR:
- WHITE
- COLOR/FINISH:
- GRAY
- COLOR/FINISH:
- RED
- COLOR/FINISH:
- WHITE
- FEATURE:
- INCLUDES OXYGEN SENSOR
- MODEL:
- TARGET TUNE
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
$688.88 -
DYNOJET Power Vision Target Tune with O2 Sensor - Harley-Davidson TT-4
DYNOJET
$688.88Includes OEM style connectors to plug into factory O² harness, either 2 or 4 pin versions, Allows the factory ECM to interpret and use wideband O² sensor signals, Retains OEM closed loop and achieves adaptive fuel control strategy, Target fuel table from...10202489- SKU:
- 10202489
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- TUNING MODULE
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- BASE COLOR:
- WHITE
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- RIDING STYLE:
- STREET
- BASE COLOR:
- GRAY
- BASE COLOR:
- RED
- COLOR/FINISH:
- GRAY
- COLOR/FINISH:
- RED
- COLOR/FINISH:
- WHITE
- FEATURE:
- INCLUDES OXYGEN SENSOR
- MODEL:
- TARGET TUNE
- PROGRAMMING:
- PRE-PROGRAMMED
$688.88 -
DRAG SPECIALTIES Engine Temperature Sensor MC-DRAG047
DRAG SPECIALTIES
$50.91OEM replacementDS289285- SKU:
- DS289285
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- PRODUCT NAME:
- SENSOR
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE TEMPERATURE
$50.91
