Best Harley Tuner [ECM, EFI] – Air & Fuel Auto Adjustment

Many people may ask how to adjust the carburetor or FI system on a Harley. Harley bikes come with an ECM/EFI computer, which uses oxygen sensors and other devices to adjust the air and fuel mixture.

There are two ways to change the way these systems operate – one is by changing out internal parts that are not adjustable. The other is by changing out internal units with ones that are capable of adjusting.

This article will show you how to change the ECM and EFI calibration with direct plug-in replacements, suitable for tuning via aftermarket tuners while disclosing the best Harley tuners available. Let’s come to know the selected tuners first:

Best Overall (All Harley) – Vance & Hines FuelPak FP3

Runner Up (All Harley) – Dynojet-Harley PV-1B

Best Tuner for Harley 103 Engine – V&H 66005 or Dynojet PV-2B

Best for Harley M8 Engine – ThunderMax M8 Auto Tuner

Best EFI Tuner for Harley Davidson – Kuryakyn Tuning Tool

Best ECM Tuner for Harley Davidson – VHP-66005A or Thundermax ECM

Why Did We Select Those?

  • ALl the units chosen from Vance & Hines are the best in price and feature. They come with two additional power increases and a dyno sheet over the others. V&H has the best customer care support too.
  • Dynojet has buttons for all six cylinders. Selected Dynojet  tuners are versatile and long-service providing.
  • ThunderMax Tuners are out of the budget category, but they can be used on virtually every Harley model and comes with two additional power increases and a dyno sheet. They have an octane adjustment switch, which the others do not.
  • The Kuryakyn Tuning Tool is also selected out of the budget category for having more features than others, even though it does not include a dyno sheet.

What Does a Motorcycle (Harley) Tuner Do?

Tuners are devices that can receive an electronic signal from your Harley’s stock electronic control module. And adjust specific parameters of the engine and fuel injection system to make your motorcycle perform better. These devices can increase or decrease particular settings in your ECM.

Most tuners have a handheld device that allows you to control the grounds of the Tuner and download information from your bike’s ECM, and upload new ones to it.

Tuners work because of their capability to adjust three critical aspects of your engine: fuel delivery, ignition timing, and boost pressure. They automatically store all factory parameters when they are uninstalled.

Do I Need a Tuner Must for My Harley?

Harley Davidson motorcycles are equipped with electronic fuel injection (EFI) and Electronic Control Modules (ECM). This delivers the best possible performance, economy, and emissions.

Suppose you want to change your fuel ratios to get more power at higher speeds, tune-up the engine’s idle speed, or reduce pinging under acceleration. You will need an EFI Auto Tuner. These devices can be plugged into the diagnostic socket below the dash in about five minutes flat. Some devices also allow you to transfer data via Bluetooth, Wi-Fi, or USB ports.

Best Harley Tuners for All H-D Models – Top Table

Best Overall
Vance & Hines Fuelpak FP3 - 66005
Runner Up
Dynojet-Harley Power Vision Fl-Blk J1850 PV-1B
Best for 103
Dynojet Black Power Vision Tuner PV-2B
Best for M8
ThunderMax Auto Tune 309-588 for 2017-2020 M8 Harley Touring Motorcycles with FREE PREMAP
Best EFI
Kuryakyn 9225 Motorcycle Performance Tuning Tool: TTS MasterTune Electronic Fuel Injection Control Module for 2001-19 Harley-Davidson Motorcycles with Delphi EFI, Single Bike Kit
Best ECM
Vance & Hines Fuelpak FP3 Fuel Management (CARB Legal) Performance Tuner: HARLEY 2014-2020 Touring FLH/FLT, 2012-2017 Dyna FXD, 2011-2020 Softail FXST/FLST, 2014-2020 Street XG, 2014-2020 Sportster XL
Vance & Hines Fuelpak FP3 - 66005
Dynojet-Harley Power Vision Fl-Blk J1850 PV-1B
Dynojet Black Power Vision Tuner PV-2B
ThunderMax Auto Tune 309-588 for 2017-2020 M8 Harley Touring Motorcycles with FREE PREMAP
Kuryakyn 9225 Motorcycle Performance Tuning Tool: TTS MasterTune Electronic Fuel Injection Control Module for 2001-19 Harley-Davidson Motorcycles with Delphi EFI, Single Bike Kit
Vance & Hines Fuelpak FP3 Fuel Management (CARB Legal) Performance Tuner: HARLEY 2014-2020 Touring FLH/FLT, 2012-2017 Dyna FXD, 2011-2020 Softail FXST/FLST, 2014-2020 Street XG, 2014-2020 Sportster XL
Best Overall
Vance & Hines Fuelpak FP3 - 66005
Vance & Hines Fuelpak FP3 - 66005
Runner Up
Dynojet-Harley Power Vision Fl-Blk J1850 PV-1B
Dynojet-Harley Power Vision Fl-Blk J1850 PV-1B
Best for 103
Dynojet Black Power Vision Tuner PV-2B
Dynojet Black Power Vision Tuner PV-2B
Best for M8
ThunderMax Auto Tune 309-588 for 2017-2020 M8 Harley Touring Motorcycles with FREE PREMAP
ThunderMax Auto Tune 309-588 for 2017-2020 M8 Harley Touring Motorcycles with FREE PREMAP
Best EFI
Kuryakyn 9225 Motorcycle Performance Tuning Tool: TTS MasterTune Electronic Fuel Injection Control Module for 2001-19 Harley-Davidson Motorcycles with Delphi EFI, Single Bike Kit
Kuryakyn 9225 Motorcycle Performance Tuning Tool: TTS MasterTune Electronic Fuel Injection Control Module for 2001-19 Harley-Davidson Motorcycles with Delphi EFI, Single Bike Kit
Best ECM
Vance & Hines Fuelpak FP3 Fuel Management (CARB Legal) Performance Tuner: HARLEY 2014-2020 Touring FLH/FLT, 2012-2017 Dyna FXD, 2011-2020 Softail FXST/FLST, 2014-2020 Street XG, 2014-2020 Sportster XL
Vance & Hines Fuelpak FP3 Fuel Management (CARB Legal) Performance Tuner: HARLEY 2014-2020 Touring FLH/FLT, 2012-2017 Dyna FXD, 2011-2020 Softail FXST/FLST, 2014-2020 Street XG, 2014-2020 Sportster XL

SaleBestseller No. 2
Vance and Hines Fuel Pak FP3 Autotuner Fuel Management Fits 6-Pin Harley Models - Connects to your Smartphone - Performance Tuning Software 66005
  • The Fuelpak FP3 has revolutionized fuel management for Harley-Davidson motorcycles. Tune your bike with your Smartphone - Welcome to the Future... ***Restricted for use in California***
  • Connecting wirelessly by Bluetooth to iPhone or Android smartphones, Fuelpak FP3 uses Flash technology to re-calibrate engine parameters and mapping for exhaust systems and other performance upgrades downloaded from the expansive library of calibrations developed by Vance & Hines.
  • Also standard for the Fuelpak FP3 is an auto-tune feature, making use of all factory sensors to add another layer of precision tuning for specific requirements, whether tuning for unique components or different grades of fuel.
  • And with the Fuelpak FP3 module plugged-in, Live Sensor Data can be viewed through the smartphone to display speed, RPM, cylinder head temperature, voltage, gear selection and other vital information. Smartphone app user interface (iOS and Android) Re-calibrates ECM by Flash Tuning. Auto-tune feature for added tuning precision. Capable of displaying Life Sensor Data.
  • Restricted for use in California*** Fits the following Harley Models with 6-Pin Connectors: FLH, FLT 2014-2020 FXD 2012-2017 FXST, FLST 2011-2017 XG500, XG750 2014-2020 XG750A 2017-2020 XL 2014-2020
SaleBestseller No. 4
Vance & Hines Fuelpak FP3 - 66005
  • Fuelpak FP3 revolutionizes fuel management for Harley-Davidson motorcycles using the HD-LAN CAN Bus 6 pin system; Connects wirelessly by Bluetooth to iPhone or Android smartphones
  • Uses Flash technology to recalibrate engine parameters and mapping for exhaust systems and other performance upgrades downloaded from the expansive library of calibrations developed by Vance & Hines
  • Autotune feature makes use of all factory sensors to add another layer of precision tuning for specific requirements, whether tuning for unique components or different grades of fuel
  • Live Sensor Data can be viewed through the smartphone to display speed, RPM, cylinder head temperature, voltage, gear selection, and other vital information
  • Compatible with Harley-Davidson models: '14-'19 Electra Glides, Road Glides, Road Kings & Street Glides, '14-'19 Trikes; '11-'19 Softails except '11-'13 CVO models, '12-'17 Dynas, '14-'19 Sportsters & '14-'19 Streets
Bestseller No. 5
Dynojet Power Commander V 15-027 for 2002-2006 Harley Davidson Touring Models FREE MAPPING & DYNO RUN
  • Purchase a PCV from us and we will preload a map for you based on your bike modifications! Just email us your bike information. It's that easy.
  • You will receive a coupon for a FREE dyno run at one of our qualifing events.
  • Adjust timing per cylinder
  • NEW Power Commander V w/ Built in Ignition Control on this model
  • Gain control over fuel delivery AND timing with the new Power Commander V with fuel and ignition control.
Bestseller No. 6
Dynojet Black Power Vision Tuner PV-2B
  • Dynojet Research Power Vision
Bestseller No. 7
Dynojet Black Power Vision Tuner PV-1B
  • Dynojet Research Power Vision
Bestseller No. 8
Aquatic AV AQ-MP-5UBT-HS Factory Harley Davidson Replacement AM/FM Radio Satellite Radio Ready
  • Anti Theft Security Face Plate/Dummy Faceplate / Dust Cover included
  • Surface Mount USB Charging Socket included
  • Clock Display Mode
  • Supports Bluetooth, USB, iPod, iPhone, MP3 and AM/FM Radio
Bestseller No. 9
Vance & Hines 66007 Fuelpak FP3
  • The Fuelpak FP3 will revolutionize fuel management for all new Harley-Davidson models now using the HDLAN system.
  • Connecting wirelessly by Bluetooth to any iPhone or Android Smartphone, Fuelpak FP3 uses flash technology to recalibrate engine parameters and mapping for exhaust systems and other performance upgrades downloaded from the expansive library of calibrations
  • NOT intended for street use.Note: Excludes fuel economy / average fuel economy, gear and odometer.
Bestseller No. 10
ThunderMax Auto Tune 309-588 for 2017-2020 M8 Harley Touring Motorcycles with FREE PREMAP
  • ThunderMax with AutoTune is the industry’s first and only stand-alone Performance EFI Engine Management System developed specifically to meet the tuning needs of Throttle-By-Wire H-D motorcycle owners. This highly advanced tuning system allows the user to support a wide range of performance upgrades with ease.
  • The all new ThunderMax AutoTune TBW module includes all of the great performance enhancements that made the brand famous – with benefits you’ll notice immediately, including quicker throttle response, increased power and cooler operating temperatures.
  • The ThunderMax with AutoTune is a Wide-Band, Closed-Loop system which means it continually and automatically adjusts your air-fuel ratios every time you ride, regardless of changes in ambient conditions. All you have to do is ride and enjoy!
  • The ThunderMax System can never be out grown... Change pipes, add cams, whatever! Just download a new map. ThunderMax software, firmware and map updates are accessible 24/7 with an internet connection.
  • Message Cycle Solutions Inc and we will set up your Thundermax Auto Tune with the proper starting map based on your bike modifications.

Brands: Who Makes the Best Tuner for Harley Davidson?

If you are looking to modify your Harley Davidson with a tuner, there are several aftermarket brands that you can choose from. The following is a list of the most popular brands producing quality tuners for different Harley models:

1. Vance & Hines

2. Dynojet

3. ThunderMax

4. S&S Cycle

6. Kuryakyn

5. Powershotz, etc.

Guide to Choose the Best Air and Fuel Auto Tuner for Harley

Compatibility.

To know if a Harley tuner is compatible with your bike, you should check the motorcycle list that says “Fits” or “Compatible With.” You can also look for other projects using that particular tuning solution. 

Installation

It is essential to know what you will need to do to install the tuning solution. You can find this information by reading reviews written by users who have already established that particular model or watching installation tutorials available online.

Fuel and Air Adjustability: Maps

An air and fuel tuner usually has several adjustability points: throttle, trans, idle, etc. Each one of these should have its map. Maps for fuel and air adjustments should be comprehensive enough to cover everything your bike needs. It should also have something extra which you can use for fine-tuning purposes.

User Interface Aesthetics and Ergonomics

It should be simple, modern, functional, and appealing. Settle for nothing less than perfect functionality and aesthetics. The user interface must be intuitive, self-explanatory, and legible. Look for details under the “The Details” tab of the product page.

Supported Protocols and Standard Compliance

Ensure that your tuner solution supports can bus and is not limited to one or two specific, proprietary protocols. If using a wireless connection, make sure that no wires are required for the initial setup. 

Harley Auto Tuner Pricing

Based on what we’ve found in the market, we divide Harley aftermarket tuner price into three different segments: 

Under $300: You’ll find the primary level tuners in most cases at this price range. Most notably, as we see, most of these tuners (not each of them) are built for limited models of Harley with applicability for a shorter time frame, for instance, Vance & Hines FuelPak 61009. They are good at their particular work, but you can’t expect them to be multidimensional.

$300 to $500: You’ll find most of the quality motorcycle auto tuners available at this range. They come up with all necessary features, and most of all, a wide variety of applications, for instance, Vance & Hines 66005. You’ll find many of them working with both the Harley M8 engines and earlier engines simultaneously.

Over $500: Some of the tuners might be costing even around a thousand USD. Tuners at this range tend to come with additional features and specialties that may not be available in others, for example, ThunderMax M8. However, you don’t need the most expensive tuners for your Harley unless you specifically require those features. 

Air & Fuel Tuning by Tuner – Techniques and Tips

Step 1: Open your bike’s ECM – Electronic Control Module.

Step 2: Look for an OBD or On-Board Diagnostic port. Most are under the seat.

Step 3: Plug in the Tuner to this port with the USB cable provided. It starts clicking automatically.

Step 4: Disconnect the Tuner from the computer after clicking stops. If you want to stop connecting without disconnecting Tuner, then press the RESET button on the front side of Tuner. 

Step 4: If your bike is not OBD2, you can plug in Tuner to the OBD1 port. But make sure you turn on the fuel pump and activate the FI light on the dashboard. This is for safety reasons; if something goes wrong, it might trigger the FI light and turn the engine off immediately.

Step 5: Open Tuner software & select USB mode. Click the search button, TTS Master Tune should be found automatically. Double click it to open the vehicle settings screen. Now you are ready to tune!

Harley Tune-Up (Dyno-Tuning) Cost in a Shop

The average cost of dyno-tuning is $100-300/hr. Dyno-tuning is required if you change exhaust pipes or replace your entire factory-installed engine with a new one. Dyno-tuning is also necessary if you make significant changes to your stock engine, like replacing the factory carburetors with electronic fuel injection (EFI) or installing a higher-performance camshaft. Dyno-tuning will get your motor running right, but the real-world results are not so easy to see unless you are physically riding the motorcycle yourself.

How long does it take to tune a Harley Davidson motorcycle?

It depends on how mechanically inclined you are and what type of experience you have had in tuning motor vehicles. These will all play an essential role in how fast or slow the process will be. But, overall, this can take between 1-2 hours if you work at it steadily with no distractions like phones ringing, kids bugging you, etc. If something breaks, it may take a little longer.

Concluding Remarks

Harley Davidson motorcycles have come a long way since their first start in 1903. The history of Harley-Davidson has many twists and turns, success and failure, but the one thing that has remained consistent is Harley’s willingness to adapt and innovate. This article will show you how to change the ECM calibration with direct plug-in replacements, suitable for tuning via aftermarket tuners like Flash Tune Evo.

Last update on 2022-05-12  / Images from Amazon Product Advertising API

About the author

Writer @ Motorcycleall.

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