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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DYNOJET Power Commander 6 with Ignition Adjustment - V-Rod PC6-15006
DYNOJET
$533.32The Power Commander 6 gives you cylinder-by-cylinder control over fuel and ignition timing, transforming a stock V-Rod's air/fuel ratio and spark advance into a precision-tuned powerplant. Whether...10203575- SKU:
- 10203575
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15009
DYNOJET
$513.32Stock Sportster fueling and ignition curves leave performance on the table—especially when running modified engines or aftermarket intake and exhaust systems. The DynoJet Power Commander 6 delivers...10203577- SKU:
- 10203577
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$513.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15010
DYNOJET
$533.32The stock ECU on your Sportster leaves performance on the table—the Power Commander 6 reclaims it through precise fuel and ignition mapping tailored to your engine's actual operating conditions...10203578- SKU:
- 10203578
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32Qty in Cart: 0Quantity:Price:$533.32Subtotal: -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring PC6-15011
DYNOJET
$533.32The DynoJet Power Commander 6 gives you precise control over fuel and ignition timing on a cylinder-by-cylinder basis, letting you extract maximum performance from your motorcycle without guesswork...10203579- SKU:
- 10203579
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Street PC6-15014
DYNOJET
$465.54Stock fuel and ignition maps leave performance on the table—the Power Commander 6 with Ignition Adjustment unlocks that potential through precise cylinder-by-cylinder tuning. Whether you're running...10203581- SKU:
- 10203581
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
$465.54 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15017
DYNOJET
$533.32Factory fuel and ignition maps are one-size-fits-all compromises that leave performance on the table. The Power Commander 6 lets you dial in precise fuel and timing adjustments across the entire RPM...10203583- SKU:
- 10203583
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Sportster PC6-15018
DYNOJET
$533.32Stock fuel and ignition mapping leaves performance on the table—the Power Commander 6 unlocks your Sportster's true potential through cylinder-by-cylinder and gear-specific tuning. This plug-and-play...10203584- SKU:
- 10203584
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring PC6-15019
DYNOJET
$533.32Stock ECU tuning limits your engine's potential and leaves power on the table across the rev range. The DynoJet Power Commander 6 gives you cylinder-by-cylinder, gear-by-gear fuel and ignition...10203585- SKU:
- 10203585
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15021
DYNOJET
$533.32If you're running a Softail and want to extract real performance gains from your engine, fuel mapping and ignition timing control are non-negotiable. The DynoJet Power Commander 6 gives you...10203586- SKU:
- 10203586
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Dyna PC6-15022
DYNOJET
$533.32Stock engine mapping leaves performance on the table and limits your ability to optimize for different riding conditions, fuel grades, and modifications. The Power Commander 6 with Ignition...10203587- SKU:
- 10203587
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - V-Rod PC6-15023
DYNOJET
$533.32The Power Commander 6 gives you granular control over fuel and ignition timing on your V-Rod—critical when you're extracting real horsepower from a modified engine. Factory ECU maps are...10203588- SKU:
- 10203588
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15024
DYNOJET
$533.32Stock EFI mapping leaves power on the table—the Power Commander 6 unlocks that potential through cylinder-by-cylinder, gear-specific tuning that responds to real-world conditions. Whether you're...10203589- SKU:
- 10203589
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Dyna PC6-15025
DYNOJET
$533.32Precision fuel and ignition tuning separates competitive riders from the rest. The Power Commander 6 delivers individual cylinder mapping and real-time adjustments without requiring extensive...10203590- SKU:
- 10203590
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - V-Rod PC6-15026
DYNOJET
$533.32The DynoJet Power Commander 6 gives you cylinder-by-cylinder fuel and ignition control without factory ECU limitations—critical for extracting maximum horsepower and torque from your V-Rod platform...10203591- SKU:
- 10203591
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring PC6-15027
DYNOJET
$533.32The stock ECU limits your motorcycle's performance potential—the Power Commander 6 puts that control back in your hands. With cylinder-by-cylinder and gear-specific mapping, you can extract...10203592- SKU:
- 10203592
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring PC6-15028
DYNOJET
$533.32The Power Commander 6 with Ignition Adjustment puts precise fuel and timing control directly in your hands—critical when you're upgrading components or chasing peak performance on the dyno. This...10203593- SKU:
- 10203593
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Softail PC6-15039
DYNOJET
$533.32The Power Commander 6 puts precise fuel and ignition control directly in your hands, letting you extract maximum performance from your Softail without sacrificing reliability or aesthetics. Whether...10203594- SKU:
- 10203594
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring PC6-15040
DYNOJET
$588.88The Power Commander 6 gives you cylinder-by-cylinder, gear-by-gear fuel and ignition control—something your bike's stock ECU simply cannot deliver. Whether you're running bolt-on upgrades or forced...10203595- SKU:
- 10203595
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$588.88 -
DYNOJET Power Commander 6 with Ignition Adjustment - Dyna PC6-15041
DYNOJET
$533.32Stock fuel and ignition maps leave performance on the table—the Power Commander 6 lets you reclaim it through precise, cylinder-by-cylinder tuning. Whether you're running a custom air intake, exhaust...10203596- SKU:
- 10203596
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$533.32 -
DYNOJET Power Commander 6 with Ignition Adjustment - Touring/Trike PC6-15049
DYNOJET
$588.88Stock fuel mapping leaves performance on the table—the Power Commander 6 with Ignition Adjustment lets you reclaim it through precise cylinder-by-cylinder tuning tailored to your touring bike or...10203599- SKU:
- 10203599
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$588.88
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.
