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!
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VANCE & HINES Fuelpak 4 Tuning Module - M8 66043
VANCE & HINES
$399.95The Vance & Hines Fuelpak 4 puts real-time fuel mapping and performance tuning directly in your hands—no dealer visits, no guesswork. This compact tuning module connects seamlessly to your M8 via Bluetooth, letting you adjust fuel delivery, ignition...10203513- SKU:
- 10203513
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal: -
THUNDERMAX ThunderMax Engine Control Module Kit with Integral Auto Tune - '21-'23 Softail 309-592
THUNDERMAX
$1,088.95Factory ECMs limit your Softail's potential, especially when running aftermarket exhaust, air intakes, or forced induction. The ThunderMax ECM takes control away from restrictive OEM tuning and puts real-time fuel and ignition mapping directly in your...10203515- SKU:
- 10203515
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
$1,088.95 -
DYNOJET Power Vision 4 Fuel Injection Controller PV4-15-02
DYNOJET
$467.76The DYNOJET Power Vision 4 puts precision fuel mapping directly in your hands without requiring dyno time or complex setup. Flash optimized tunes in minutes, monitor real-time engine data, and retain the ability to return to stock configuration...10203524- SKU:
- 10203524
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$467.76 -
VANCE & HINES Fuelpak 4 Tuning Module - Dyna/Softail/Sportster/Touring/Trike 66045
VANCE & HINES
$399.95Real-time fuel mapping and engine diagnostics put performance tuning in your hands—no guesswork, no dyno visits required. The Fuelpak 4 delivers closed-loop feedback through an intuitive mobile interface, letting you optimize air-fuel ratio and ignition...10203962- SKU:
- 10203962
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal: -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring/Trike PC6-15042
DYNOJET
$513.32If you're running a touring bike or trike with aftermarket fuel injection, you need precise control over fuel and ignition timing to maximize performance and driveability across varying conditions. The DynoJet Power Commander 6 delivers that control...10203597- SKU:
- 10203597
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15048
DYNOJET
$513.32Stock EFI mapping leaves performance on the table—the Power Commander 6 delivers cylinder-by-cylinder fuel and ignition control to optimize your Softail's combustion efficiency across the entire RPM range. Whether you're running a stock engine or a built...10203598- SKU:
- 10203598
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$513.32 -
DYNOJET Power Commander 6 Fuel Injection Module - Ignition Adjustment - Victory PC6-19043
DYNOJET
$569.98If you're serious about extracting maximum performance from your Victory, fuel and ignition mapping is non-negotiable. The Power Commander 6 lets you dial in precise fuel and timing adjustments on a per-cylinder, per-gear basis—giving you control that...10203604- SKU:
- 10203604
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$569.98 -
DYNOJET Power Vision 3 Fuel Injection Module PV3-15-02
DYNOJET
$513.32The DYNOJET Power Vision 3 gives you direct control over your fuel injection mapping without the hassle of removing and shipping your ECU. Real-time tuning adjustments through the OEM diagnostic connector mean you can optimize performance for your...10203170- SKU:
- 10203170
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$513.32 -
DYNOJET Power Vision 3 Fuel Injection Module PV3-15-03
DYNOJET
$513.32The Power Vision 3 gives you direct control over your engine's fuel and ignition mapping without the hassle of ECU removal—flash performance tunes directly through the OEM diagnostic connector in minutes. Real-time data channels let you monitor...10203986- SKU:
- 10203986
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
$513.32 -
DYNOJET Power Vision 4 Fuel Injection Controller PV4-15-03
DYNOJET
$467.76The DYNOJET Power Vision 4 transforms your motorcycle's fuel injection tuning from a dealer-dependent process into a straightforward, cloud-based operation you control entirely. Whether you're chasing peak performance, adapting to aftermarket components,...10203987- SKU:
- 10203987
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$467.76 -
DYNOJET Power Commander 6 Fuel Injection Module - Ignition Adjustment - Victory PC6-19047
DYNOJET
$513.32Stock fuel mapping leaves performance on the table, especially once you've added forced induction or modified your engine. The Power Commander 6 delivers cylinder-by-cylinder and gear-specific tuning control, letting you dial in optimal air-fuel ratios...10203605- SKU:
- 10203605
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15007
DYNOJET
$513.32Stock fuel and ignition mapping leaves performance on the table—the Power Commander 6 with Ignition Adjustment unlocks that potential by letting you fine-tune your Softail's fueling and spark advance across the entire RPM range. Whether you're running...10203576- SKU:
- 10203576
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$513.32 -
DYNOJET Power Vision 3 Fuel Injection Module PV3-15-01
DYNOJET
$513.32If you're running forced induction or looking to extract every bit of performance from your engine, tuning is non-negotiable. The DynoJet Power Vision 3 lets you flash optimized performance maps directly through your OEM diagnostic connector—no ECU...10203985- SKU:
- 10203985
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15002
DYNOJET
$513.32Stock fueling maps leave performance on the table, especially when you're running modified air intake, exhaust, or forced induction on your Sportster. The DynoJet Power Commander 6 gives you cylinder-by-cylinder, gear-by-gear control over ignition timing...10203572- SKU:
- 10203572
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$513.32 -
DYNOJET Power Commander 6 Fuel Injection Module - Ignition Adjustment - Victory PC6-19009
DYNOJET
$569.98Tuning a fuel-injected Victory engine demands precision control over fuel delivery and ignition timing—two variables that directly impact horsepower, throttle response, and drivability across the entire RPM range. The Power Commander 6 gives you...10203603- SKU:
- 10203603
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$569.98 -
Fi2000 FI2000R Plug-In Fuel Processor - Touring 92-1603R
Fi2000
$274.95A lean air/fuel mixture robs your bike of power, causes hesitation on acceleration, and can lead to overheating and erratic cruising RPM. The Fi2000R Fuel Processor corrects these issues without requiring fuel map downloads or computer tuning—simply plug...10204014- SKU:
- 10204014
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$274.95 -
DYNOJET Power Vision 3 Tuner License - Harley-Davidson - 10-Pack PV-TC10
DYNOJET
$3,010.69If you're running multiple Harley-Davidson builds or planning to expand your tuning capabilities, the Power Vision 3 Tuner License 10-Pack eliminates the need to purchase separate devices for each motorcycle. Each license is vehicle-specific, not...10203999- SKU:
- 10203999
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$3,010.69 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15001
DYNOJET
$513.32Stock fuel and ignition maps can't adapt to your modifications, leaving performance on the table and throttle response unpredictable. The DynoJet Power Commander 6 gives you cylinder-by-cylinder, gear-by-gear control over your Sportster's fueling and...10203571- SKU:
- 10203571
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15004
DYNOJET
$513.32The Power Commander 6 gives you precise fuel and ignition control without the guesswork of generic tune-ups. Whether you're running stock or modified air intakes, exhausts, or forced induction, this tuner lets you dial in exactly what your engine needs...10203573- SKU:
- 10203573
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Dyna PC6-15005
DYNOJET
$513.32Factory ECU tuning leaves performance on the table—the Power Commander 6 puts precise fuel and ignition control back in your hands. Whether you're running a stock engine or forced induction setup, cylinder-by-cylinder mapping lets you optimize power...10203574- SKU:
- 10203574
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$513.32
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.
