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...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...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
$533.32The 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...10203524- SKU:
- 10203524
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$533.32 -
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...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
$533.32If 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...10203597- SKU:
- 10203597
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15048
DYNOJET
$533.32Stock 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...10203598- SKU:
- 10203598
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
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...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
$533.32The 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...10203170- SKU:
- 10203170
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Vision 3 Fuel Injection Module PV3-15-03
DYNOJET
$533.32The 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...10203986- SKU:
- 10203986
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
$533.32 -
DYNOJET Power Vision 4 Fuel Injection Controller PV4-15-03
DYNOJET
$533.32The 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...10203987- SKU:
- 10203987
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$533.32 -
DYNOJET Power Commander 6 Fuel Injection Module - Ignition Adjustment - Victory PC6-19047
DYNOJET
$533.32Stock 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...10203605- SKU:
- 10203605
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15007
DYNOJET
$533.32Stock 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...10203576- SKU:
- 10203576
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$533.32 -
DYNOJET Power Vision 3 Fuel Injection Module PV3-15-01
DYNOJET
$533.32If 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...10203985- SKU:
- 10203985
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15002
DYNOJET
$533.32Stock 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...10203572- SKU:
- 10203572
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 Fuel Injection Module - Ignition Adjustment - Victory PC6-19009
DYNOJET
$588.88Tuning 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...10203603- SKU:
- 10203603
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$588.88 -
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...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
$3,055.54If 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...10203999- SKU:
- 10203999
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$3,055.54 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15001
DYNOJET
$533.32Stock 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,...10203571- SKU:
- 10203571
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15004
DYNOJET
$533.32The 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...10203573- SKU:
- 10203573
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Dyna PC6-15005
DYNOJET
$533.32Factory 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,...10203574- SKU:
- 10203574
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$533.32
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.
