Harley Davidson introduced its 103 cubic inches (1688cc) V-twin in 2012 as a standard size for the Softail and Touring models.
Today, the Twin Cam 103, is found in several models and years, including 2003–2006, 2009, 103 cubic inches (1,690 cm³). It is a standard on 2011 Touring models: Ultra Limited, Road King Classic, and Road Glide Ultra and optional on the Road Glide Custom and Street Glide. Standard on most 2012 models excluding Sportsters and 2 Dynas, and a Standard on all 2014 Dyna models.
As a Harley Davidson owner, you want a device that will promote the performance of your bike, and this article brings you the best autotuner units that help you adjust air and fuel for better performance, higher HP and improved throttle response, for bikes that use fuel injection technology.
In this article, I present you with the top tuners for Harley 103 twin-cam engines.
List of Top-Rated Tuners for Harley 103 Comparison Table:
|Vance and Hines 66005||5.6 ounces||View on Amazon|
|Dynojet 15-004||1.55 lbs||View on Amazon|
|Thunder Heart ECMs||2.4 pounds||View on Amazon|
|Vance And Hines 61003a||2 pounds||View on Amazon|
|Cobra Fi2000R O2 Digital Fuel Processor||11.2ounces||View on Amazon|
The Tuners for Harley 103 Reviews & Buyer’s Guide:
Vance and Hines 66005
The Fuelpak FP3 uses Flash technology and connects wirelessly by Bluetooth to an iPhone or Android Smartphone. This model is used to recalibrate engine parameters and is also used to map exhaust systems and provide many performance upgrades.
With a vast library of Dyno Tuned Maps, the Fuelpack FP3 provides you with ample recalibration for these models:
- 2011-2019 Softail
- 2012-2017 Dyna
- 2014-2019 Touring, Sportster, Street
The large library of tunes will give you the ability to monitor your ride, read and diagnose trouble codes, and watch live data on the fly.
Among the many readouts are RPM, engine temperature, battery voltage, and fuel economy.
You also get the AutoTune tool that gives you the power to tune your bike, and you can tune it as you ride it, using the stock O2 sensors. This tuner will let you calibrate for cleaner air, exhaust modifications, and camshaft combination. You just place the mode into AutoTune, and the system does the rest for you.
The other feature is the Advanced Tuning tool that gives you full access to critical ECU tables in the app. you can change your idle RPM, raise your rev limit, add aftermarket camshafts, and adjust more tables that include VE, Air Fuel Ratio, and spark advance.
- Smartphone App User Interface (iOS & Android)
- Recalibrates ECM by Flash tuning
- Autotune Feature for enhancing your tune
- Display Live Sensor Data on your smartphone
This is a great device for improving your bike in any one of the models mentioned. It is set in the higher price range, but as a Vance and Hines model, it is one of the best and only good tuner for these applications on the market.
The Dynojet Power Commander V Product is an exceptional tuner for specific models.
The Dynojet Power Commander V covers a very specific range of Harley’s;
- 2007 – 2008 Softail Classic (EFI) – FLSTC
- 2009 – 2011 Softail Cross Bones – FLSTSB
- 2008 Softail Cross Bones (EFI) – FLSTSB
- 2009 – 2010 Softail Custom – FXSTC
- 2007 – 2008 Softail Custom (EFI) – FXSTC
- 2007 Softail Deuce (EFI) – FXSTD
- 2009 – 2011 Softail Fat Boy – FLSTF
- 2007 – 2008 Softail Fat Boy (EFI) – FLSTF
- 2009 Softail Night Train – FXSTB
- 2007 – 2008 Softail Night Train (EFI) – FXSTB
- 2007 Softail Springer Classic (EFI) – FLSTSC
- 2007 Softail Standard (EFI) – FXST
This is a smaller PCIIIusb model that is powered via a USB port connected to your computer.
It comes with a built-in 2 position map switching function and allows you to map gear input.
The analog input enables you to install any 0-5 volt sensor; then you can create an adjustment table based on the inputs.
The PCV is capable of allowing each cylinder to be mapped individually and for each gear when the gear position input is connected.
You get a -100/+250% fuel change range and 10 throttle position columns. There is also an enhanced “accel pump” utility and a built-in Ignition Control.
This model gives you +/- 20 degrees of timing adjustment, and you can adjust the timing per cylinder. Some models come with a built-in rev limiter, and a Bosch 3 bar MAP/Temp sensor for the PCV harness.
The 15-004 model Power Commander V provides solutions for turbocharged or supercharged applications.
- Increased stock rev limiter
- Switch between two maps on the fly
- Maps can be adjusted on a per-gear basis
- Cold start features give adjustment of fuel and timing based on engine temperature
- USB cable only for programming and power
This model comes with an average price tag but delivers great performance, so it’s not heavy on the pocket, but is great in providing service.
Thunder Heart ECMs with Integral Autotune System
The tuner uses wide-band O2 sensors and operates as a closed-loop control system for self-adjusting and tuning the motorbike air/fuel ratio for all riding conditions. It comes with a plug-in harness, ThurderMax ECM with auto-tune module, two wide-band sensors, a comprehensive user’s manual, TMax software, communication USB cable, technical support, and free software updates.
Thundermax Performance ECMs are easy to install and use. It provides hundreds of maps to download for your bike. The unit does not need dyno tuning and will help improve throttle response, driveability, and exhaust sound. The tuner allows the rider to change idle speed, rev limit, and speedometer calibration. When you continue riding your motorbike, you will experience cooler and stabile engine temperatures.
- With adjustable rear and front cylinder AFR maps
- Start-up maps, ignition timing maps, and warm-up settings
- Reads and clears diagnostic codes
- Equipped with live diagnostic data logging, recording, and monitoring ability
If you ride for extended periods, this is the best tuner for you. It is compatible with many exhaust systems and will give you excellent performance.
Vance And Hines 61003a
This is the 61003A LEGACY FUELPAK Harley Davidson Tourer 02-07 Tuner
This is the Fuelpack LED model, which is very similar to the FP3 models but comes with a more focused application, so the price is budget-friendlier. However, this tuner will only work for the following Touring Glide models:
- 2007 Touring Electra Glide Classic FLHTC, FLHTC, FLHTCU, FLTR, FLHRC, FLHX, FLHRS
- 2006 Touring Electra Glide Police EFI FLHPEI, EFI FLHXI
- 2005 Touring Road King Police CA EFI FLHPEI
- 2002 – 2006 Touring Electra Glide Ultra Classic EFI FLHTCUI, EFI FLHRCI, EFI FLHRI
- 2002 – 2007 Touring Electra Glide Classic EFI FLHTCI
- 2003 – 2006 Touring Electra Glide Standard EFI FLHTI
- 2004 – 2006 Touring Road King Custom EFI FLHRSI, EFI FLTRI
- 2005– 2006 Touring Electra Glide Police EFI FLHTPI, EFI FLHPI
The Fuelpak LED is a plug-and-play fuel controller that provides you with customized mapping for all Delphi fuel injected Harley-Davidson models. This unit uses SAE J1850 that install in-line with the ECM and modify the output signal to fuel injectors.
The Fullback LED System utilizes the throttle position sensor which simplifies the fuel injection tuning process. You can fine-tune the fuel mixture at the touch of a button, and immediately improve throttle response while increasing power.
- Fine-tune the fuel mixture with the touch of a button
- Improves throttle response and increases power
- Easy to use; no software required
- Includes all mounting hardware
- For fuel injected models only
This is a nicely priced tuner for most Touring models, it won’t burn a hole in your pocket, but it will improve your bike’s performance and give you a burning hot ride.
Cobra Fi2000R O2 Digital Fuel Processor
The tuner is unique and helps adjust the air/fuel engine ratio, allowing it to work to its full potential. As a result, the engine gets cooler, giving you a more comfortable and satisfying ride. It has three adjustment pods in case your application needs it. Each comes with compressive details of how to make these adjustments quickly.
Cobra Fi2000R O2 Digital Fuel Processor efficiently works with all exhaust systems that have oxygen sensors. It does not need extra Dyno testing or mapping. The tuner helps to increase horsepower and torque. It fits the following models:
- 2007-2011 Harley Davidson XL1200C Sportster 1200 Custom
- 2007-2011 Harley Davidson XL1200L Sportster 1200 Low
- 2007-2011 Harley Davidson XL1200N Sportster 1200 Nightster
- 2007-2008 Harley Davidson XL1200R Sportster 1200 Roadster
- 2007-2008 Harley Davidson XL883 Sportster
- 2007-2009 Harley Davidson XL883C Sportster 883 Custom
- 2009-2011 Harley Davidson XL88
- It does not require dyno testing
- It improves rideability
- With confusing computer downloads
- It eliminates backfiring on deceleration
Even if the tuner is a bit expensive, it will give you excellent and improved rideability. It will also offer you an additional performance that you need when riding for long periods.