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
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DRAG SPECIALTIES Air Temperature Sensor MC-DRAG039
DRAG SPECIALTIES
$81.57Accurate air temperature readings are critical for precise fuel mapping and ignition timing in high-performance engines. A faulty air temperature sensor causes rich or lean conditions, costing you...DS289144- SKU:
- DS289144
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- SENSOR
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- AIR TEMPERATURE
$81.57 -
DRAG SPECIALTIES Throttle Position Sensor MC-DRAG058
DRAG SPECIALTIES
$68.85A faulty throttle position sensor compromises throttle response, fuel delivery precision, and overall engine performance—critical issues for both street and track applications. The DRAG Specialties...21031002- SKU:
- 21031002
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- THROTTLE POSITION SENSOR
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- UNITS:
- EACH
$68.85Qty in Cart: 0Quantity:Price:$68.85Subtotal: -
DYNOJET Wideband Power Vision-3 Air Fuel Ratio Individual Dual WB-PV29-2
DYNOJET
$595.99Precision tuning demands accurate, real-time air-fuel ratio data—and the DYNOJET Wideband Power Vision-3 delivers exactly that without the wiring headaches of traditional wideband controllers. By...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 -
DYNOJET Auto Tune Power Commander V - '10-'13 FLHT/X AT-100B
DYNOJET
$611.10The DYNOJET Auto Tune Power Commander V puts precise fuel mapping control directly in your hands, letting you optimize air/fuel ratios across every RPM and throttle position for your specific riding...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
$611.10 -
DYNOJET Power Vision Visor - Black 61300054
DYNOJET
$55.54Maximize visibility during high-intensity dyno sessions and track days with the DYNOJET Power Vision Visor. This sun shade eliminates glare and screen washout, ensuring you can read real-time...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
$55.54 -
DYNOJET Auto Tune Power Commander V - '12-'15 Softail/Dyna AT-101B
DYNOJET
$577.77Fine-tuning your air/fuel mixture across the entire throttle range unlocks hidden power while optimizing fuel economy—something the stock ECU simply cannot achieve. The DynoJet Auto Tune module gives...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
$577.77Qty in Cart: 0Quantity:Price:$577.77Subtotal: -
DYNOJET Auto Tune Kit - Harley-Davidson AT-110
DYNOJET
$688.88Fine-tuning your air-fuel ratio across the entire throttle range is the difference between adequate performance and optimized efficiency on every ride. The DYNOJET Auto Tune Kit gives you real-time...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
$688.88Qty in Cart: 0Quantity:Price:$688.88Subtotal: -
DYNOJET Auto Tune Kit - Harley-Davidson AT-110B
DYNOJET
$722.21Fine-tuning your air-fuel ratio across the entire throttle range unlocks both fuel economy and peak power—something stock Harley tuning simply can't deliver. The DYNOJET AT-110B Auto Tune Kit gives...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
$722.21 -
DYNOJET Power Vision Shop Kit Tuner PV-TK3R
DYNOJET
$944.43If you're running a shop without access to a Dynojet dyno, the Power Vision Shop Kit Tuner eliminates the barrier to professional-grade bike tuning. This AutoTune Pro Module lets you tune multiple...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
$944.43 -
DYNOJET Power Vision Target Tune with O2 Sensor - Harley-Davidson TT-5
DYNOJET
$722.21The DYNOJET Power Vision Target Tune with O2 Sensor gives you real-time fuel mapping control without sacrificing your factory diagnostics or reliability. By allowing your OEM ECM to interpret...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
$722.21 -
DYNOJET Power Vision Target Tune with O2 Sensor - Harley-Davidson TT-4
DYNOJET
$722.21If you're running a custom tune on your Harley-Davidson, you know that getting your air-fuel ratio dialed in makes the difference between a bike that merely runs and one that performs predictably...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
$722.21 -
DRAG SPECIALTIES Engine Temperature Sensor MC-DRAG047
DRAG SPECIALTIES
$51.89An accurate engine temperature reading is critical for preventing overheating, protecting engine longevity, and optimizing fuel mapping on high-performance builds. The DRAG Specialties MC-DRAG047 is...DS289285- 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
$51.89 -
THUNDERMAX ThunderMax Engine Control Module Kit with Integral Auto Tune - Touring 309-591
THUNDERMAX
$1,088.95Factory ECM limitations leave performance on the table—whether you're running custom exhaust, high-flow heads, or forced induction. The ThunderMax Engine Control Module Kit takes real-time...10203514- SKU:
- 10203514
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
$1,088.95 -
DYNOJET Power Vision 3 Tuner License - Harley-Davidson - 1-Pack PV-TC1
DYNOJET
$333.32If you're running multiple Harley-Davidsons or planning to upgrade your fleet, a single Power Vision 3 device becomes exponentially more valuable with additional tune licenses. Each license is...10203998- SKU:
- 10203998
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$333.32 -
DYNOJET Power Vision 3 Tuner License - Harley-Davidson - 5-Pack PV-TC5
DYNOJET
$1,686.66If you're running multiple Harley-Davidson platforms or planning to expand your tuning capability, this 5-pack of Tune Licenses unlocks the full potential of your Power Vision 3 system without...10204012- SKU:
- 10204012
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$1,686.66 -
TECHNORESEARCH TRO2 Sensor System TRO2-002-001
TECHNORESEARCH
$532.95Accurate air-fuel ratio data is non-negotiable when tuning forced induction systems or dialing in engine modifications. The TECHNORESEARCH TRO2 Sensor System gives you real-time O² feedback that...38070343- SKU:
- 38070343
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- BASE COLOR:
- ORANGE
- MODEL:
- TRO2
- RIDING STYLE:
- STREET
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PROGRAMMING:
- PRE-PROGRAMMED
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- ORANGE
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PRODUCT NAME:
- TUNING MODULE
$532.95Qty in Cart: 0Quantity:Price:$532.95Subtotal: -
NAMZ Fuel Injector Enrichener - '07-'10 Big Twin Race NR-XIED
NAMZ
$132.95When you're running high-flow intake and exhaust systems, your fuel mixture needs to adapt—or risk heat buildup that'll compromise engine reliability and performance. The NAMZ Fuel Injector...10201151- SKU:
- 10201151
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- OXYGEN SENSOR CONTROLLER
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
$132.95Qty in Cart: 0Quantity:Price:$132.95Subtotal: -
THUNDERMAX USB Pigtail 309-424
THUNDERMAX
$20.95If you're running a ThunderMax ECM on a Dyna, Softail Rocker, or early V-Rod with limited space around the engine control module, the THUNDERMAX USB Pigtail 309-424 solves a real installation...10201855- SKU:
- 10201855
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- BLACK
- PHYSICAL CONNECTION:
- SPLICE-IN
- TYPE:
- REPLACEMENT COMPONENT
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- USB PIG TAIL HARNESS
- MODEL:
- THUNDERMAX
- RIDING STYLE:
- STREET
$20.95 -
THUNDERMAX ECM with Auto Tune - '17+ FLHT 309-588
THUNDERMAX
$1,088.95Factory ECM tuning leaves performance on the table—the THUNDERMAX ECM with Auto-Tune gives you closed-loop control over your air/fuel ratio, ignition timing, and startup maps without requiring...10202664- SKU:
- 10202664
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- TUNING SYSTEM
- UNITS:
- KIT
$1,088.95 -
THUNDERMAX ECU with Auto Tune - '18 Softail 309-589
THUNDERMAX
$1,088.95Factory ECUs limit your Softail's potential, leaving performance gains on the table and throttle response compromised. The ThunderMax ECU with Auto-Tune replaces guesswork with precision—continuously...10202795- SKU:
- 10202795
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- BASE COLOR:
- BLACK
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PROGRAMMING:
- AUTOTUNE
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
- PROGRAMMING:
- DOWNLOADABLE MAPS
- RIDING STYLE:
- STREET
$1,088.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Fuel Injection Tuning Systems
- Compatibility: Ensure the tuner fits your Harley's model (e.g., Twin Cam, V-Rod 2002-2013, Touring FLHT 2014-2016, Softail 2016-2017) and engine type (e.g., fuel-injected, throttle-by-wire or non-TBW). Use the vehicle selector for year-specific matches to avoid wiring or calibration issues.
- Type of Use: For street touring or modified bikes, select auto-tune ECMs for self-calibrating efficiency; high-performance or dyno-tuned setups benefit from wideband controllers with data logging for precise air/fuel adjustments in demanding conditions.
- Components and Upgrades: Choose systems with ECU controllers, auto-tune modules, wide-band O2 sensors (e.g., Bosch LSU 4.2), harnesses, and USB interfaces. Add upgrades like target tune kits for adaptive control or shop tuners for multi-bike use.
- Brand and Quality: Opt for ThunderMax for ECMs with touchscreen auto-tune, Dynojet for Power Vision wideband systems with datalogging, or Daytona Twin Tec for Gen 6 controllers with O2 feedback. Prioritize dyno-proven, plug-and-play designs for reliability and performance gains.
- Installation and Cost: Most are plug-in with OEM connectors for easy DIY setup; include software and manuals. Prices range from $595 for basic tuners to $1,285 for advanced controllers—factor in free software updates and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these fuel injection tuning systems support? Systems support models like Twin Cam, V-Rod (2002-2013), Touring FLHT (2008-2016), Softail (2016-2017), and more—use the year/make/model filter for exact compatibility with throttle-by-wire or non-TBW setups.
- How do auto-tune systems improve performance? They self-calibrate air/fuel ratios using wide-band O2 sensors for smoother power, better throttle response, and no dyno required, ideal for modified engines.
- What is typically included in a tuning kit? Kits often include ECU/modules, wide-band sensors, harnesses, USB cables, software, weld nuts, and manuals for complete installation and tuning.
- Are these systems plug-and-play? Yes, with OEM-style connectors and closed-loop feedback, they install easily without ECU removal, supporting custom maps via PC.
- What if a system doesn't fit my Harley? Verify engine type, year, and throttle system before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related air and fuel parts? Yes—explore air cleaners, fuel pumps, or carbs in the Harley air and fuel category to complement your tuning system for optimal efficiency.
