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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DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 3 BAR Manifold Absolute Sensor - '17-'20 Touring 17810
DAYTONA TWIN TEC LLC
$1,437.95If you're running a modern Harley-Davidson Touring with aggressive cam profiles or forced induction, factory fuel mapping won't cut it. The DAYTONA TWIN TEC LLC Electronic Control Module Kit gives you complete control over fuel delivery on a per-cylinder...10204216- SKU:
- 10204216
- Availability:
- Ships Same Business Day
- Weight:
- 2.98 LBS
$1,437.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit - '18-'20 Softail 17811
DAYTONA TWIN TEC LLC
$1,307.95If you're running a modern Softail with aggressive cam timing or forced induction, your stock fuel management can't keep pace—leaving power on the table and reliability concerns on the dyno. The DAYTONA TWIN TEC LLC Fuel Injection Electronic Control...10204217- SKU:
- 10204217
- Availability:
- Ships Same Business Day
- Weight:
- 2.69 LBS
$1,307.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 2 BAR Manifold Absolute Sensor - '18-'20 Softail 17812
DAYTONA TWIN TEC LLC
$1,371.95If you're running a modern Softail with aggressive cam profiles or forced induction, your factory fuel injection mapping likely isn't optimized for your setup—leaving power on the table and risking lean-out conditions. The DAYTONA TWIN TEC LLC Electronic...10204218- SKU:
- 10204218
- Availability:
- Ships Same Business Day
- Weight:
- 2.71 LBS
$1,371.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 3 BAR Manifold Absolute Sensor - '18-'20 Softail 17813
DAYTONA TWIN TEC LLC
$1,437.95If you're running a modern Harley-Davidson Softail with custom cam profiles or forced induction, your stock fuel injection system likely can't keep up with the demands of your engine modifications. The DAYTONA TWIN TEC LLC Electronic Control Module...10204219- SKU:
- 10204219
- Availability:
- Ships Same Business Day
- Weight:
- 2.99 LBS
$1,437.95 -
DAYTONA TWIN TEC LLC Manifold Absolute Pressure Sensor - 2 BAR 17815
DAYTONA TWIN TEC LLC
$141.95Accurate fuel mixture control depends on precise intake manifold pressure measurement—the MAP sensor is critical to your engine's performance and reliability. The DAYTONA TWIN TEC LLC 2 BAR MAP sensor delivers real-time data to your fuel injection ECU,...10204221- SKU:
- 10204221
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$141.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit - '14-'17 Softail 17803
DAYTONA TWIN TEC LLC
$1,307.95If you're running forced induction, nitrous, or a built large-displacement engine on your '14-'17 Softail, the factory ECU can't adapt to your modifications—leaving performance on the table and risking lean conditions. The DAYTONA TWIN TEC LLC Fuel...10204237- SKU:
- 10204237
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,307.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit - M8 Touring/Trike 17818
DAYTONA TWIN TEC LLC
$1,307.95The DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module replaces your M8 Touring or Trike's restrictive OEM ECU with a fully programmable platform that adapts to forced induction, nitrous, and high-displacement builds. Real-time auto-tuning via...10204238- SKU:
- 10204238
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,307.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 2 BAR Manifold - M8 Touring/Trike 17819
DAYTONA TWIN TEC LLC
$1,371.95If you're running modified M8 Touring or Trike power—whether forced induction, nitrous, or large-displacement naturally aspirated—your OEM fuel management simply won't cut it. The Daytona Twin Tec LLC ECU replaces restrictive factory tuning with...10204239- SKU:
- 10204239
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,371.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 3 BAR Manifold - M8 Touring/Trike 17820
DAYTONA TWIN TEC LLC
$1,437.95If you're running forced induction on your M8 Touring or Trike, the factory ECU simply won't cut it—you need precise fuel and ignition control to maximize power safely. The DAYTONA TWIN TEC LLC Electronic Control Module Kit delivers real-time tuning...10204240- SKU:
- 10204240
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,437.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit - M8 Softail 17821
DAYTONA TWIN TEC LLC
$1,307.95If you're running forced induction, big displacement, or custom fuel mapping on your M8 Softail, the factory ECU limits your potential. The Daytona Twin Tec LLC Fuel Injection Electronic Control Module Kit replaces that restriction with full tuning...10204241- SKU:
- 10204241
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,307.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 2 BAR Manifold - M8 Softail 17822
DAYTONA TWIN TEC LLC
$1,371.95If you're running forced induction, high-displacement, or heavily modified power on your M8 Softail, the factory ECU won't give you the precision tuning needed to extract maximum performance and reliability. The DAYTONA TWIN TEC LLC Fuel Injection...10204242- SKU:
- 10204242
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,371.95 -
DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit with 3 BAR Manifold - M8 Softail 17823
DAYTONA TWIN TEC LLC
$1,437.95The factory ECU limits your M8 Softail's potential—restrictive fuel maps, fixed timing curves, and no real-time tuning capability. The DAYTONA TWIN TEC LLC Fuel Injection Electronic Control Module Kit replaces those constraints with full programmable...10204243- SKU:
- 10204243
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$1,437.95 -
DYNOJET Power Commander 6 Fuel Injection Module - Touring PC6-15051
DYNOJET
$569.98Stock fuel mapping leaves performance on the table—the DynoJet Power Commander 6 reclaims it by allowing precise air/fuel ratio and timing adjustments without reflashing your ECU. Whether you've upgraded your exhaust, added forced induction, or simply...10204245- SKU:
- 10204245
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$569.98 -
DYNOJET Power Vision Cable - Harley Davidson 76950241
DYNOJET
$57.77If you're serious about maximizing your Harley's performance potential, you need direct access to engine diagnostics and real-time tuning data. The DYNOJET Power Vision Cable gives you professional-grade tuning capability without expensive dyno visits,...10204098- SKU:
- 10204098
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$57.77 -
DYNOJET Power Vision Cable - Harley Davidson 76950346
DYNOJET
$57.77The DYNOJET Power Vision Cable gives you direct access to real-time engine diagnostics and custom tuning parameters without sending your Harley to a shop. If you're serious about extracting maximum performance from your motor while maintaining...10204101- SKU:
- 10204101
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
$57.77 -
DYNOJET Power Vision 3 - Indian PV3-2901C
DYNOJET
$569.98Precision tuning separates competitive advantage from mediocrity on the track and street. The DYNOJET Power Vision 3 gives you real-time control over your Indian's fuel mapping and ignition timing, eliminating guesswork and unlocking performance gains...10204155- SKU:
- 10204155
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- FEATURE:
- USB POWERED
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
- BASE COLOR:
- BLACK
- MODEL:
- POWER VISION 3
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- FUEL INJECTION MODULE
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
$569.98 -
DYNOJET Power Vision 3 - Indian PV3-2902C
DYNOJET
$569.98Whether you're chasing peak horsepower on the dyno or fine-tuning your Indian for real-world performance, the DYNOJET Power Vision 3 puts professional-grade EFI tuning directly in your hands. Skip the guesswork—access Dynojet-engineered base maps or...10204156- SKU:
- 10204156
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- FEATURE:
- USB POWERED
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- FUEL INJECTION MODULE
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- MODEL:
- POWER VISION 3
- PROGRAMMING:
- PRE-PROGRAMMED
- UNITS:
- EACH
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
$569.98 -
DYNOJET Power Vision 3 - Indian PV3-2903C
DYNOJET
$569.98The DYNOJET Power Vision 3 puts real-time EFI tuning control in your hands, eliminating guesswork and dyno shop visits for Indian motorcycle owners seeking precision performance gains. With direct integration to dyno data and a library of...10204157- SKU:
- 10204157
- Availability:
- Ships Same Business Day
- Weight:
- 0.84 LBS
- FEATURE:
- USB POWERED
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
- BASE COLOR:
- BLACK
- MODEL:
- POWER VISION 3
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- FUEL INJECTION MODULE
- PROGRAMMING:
- PRE-PROGRAMMED
- UNITS:
- EACH
$569.98 -
DYNOJET Power Vision 3 - Indian PV3-2904C
DYNOJET
$569.98The DYNOJET Power Vision 3 gives you real-time control over your Indian's fuel and ignition mapping, eliminating guesswork and unlocking measurable performance gains. Whether you're fine-tuning at the track or diagnosing issues on the road, this tuning...10204158- SKU:
- 10204158
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- FEATURE:
- USB POWERED
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- FUEL INJECTION MODULE
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- MODEL:
- POWER VISION 3
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
$569.98 -
VANCE & HINES FP4 - Pre '14 66047
VANCE & HINES
$399.95The Vance & Hines FP4 fuel tuning module puts real-time engine data and precision fuel mapping directly in your hands—essential for extracting maximum performance from your CANBUS Harley-Davidson while maintaining reliability and drivability. The...10204028- SKU:
- 10204028
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PROGRAMMING:
- DOWNLOADABLE MAPS
- UNITS:
- EACH
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PROGRAMMING:
- PROGRAMMABLE
- PRODUCT NAME:
- TUNING MODULE
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal:
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.
