Power Vision Firmware Update


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Power Vision Firmware Update

Keep on Tuning!  Dynojet Power Vision supports the latest updates for H-D motorcycles with the new firmware level and tune database.

We just released a new firmware and tune database for Power Vision, firmware, and tune database Which means Power Vision now supports two new software levels for Harley-Davidson Motorcycles; 621 and 822.

Software level 621 is used on 2014 and newer Softail & Dyna 110” models.


822 is used on 2017-2018 Touring models.


Simply use the update client to manage the download and installation of the latest firmware.  Once updated you’ll be able to tune these new software levels using the original tune as the basis, or use 617 (for 621) or 723 (for 822) level calibrations in their place.  To avoid any voids in service, the Power Vision Tune License Program has also been updated and will support these new software levels.

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What is Rev X-tend on Dynojet’s Power Commander V?


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What is Rev X-tend?

Rev X-tend is a feature within the Power Commander that allows you to change the engine’s rev-limiter. This feature can only be used on some models where the Power Commander has control of the vehicle’s ignition. If you have a “Fuel Only” PC5 unit, you would need to add an Ignition Module accessory to use the Rev X-tend feature.

What models PC5 includes Rev X-tend?

Some PC5units have Fuel and Ignition Control “built-in” to one unit. In most of those units, you can use the Rev X-tend feature. Most of those Rev X-tend compatible units are pre-configured to give you 500 RPM more than the stock rev-limiter, without the need for any key-code. You can get 500 RPM more than stock just by checking the box and enabling the Rev X-tend feature from the software. Some Fuel and Ignition PC5 units that have a pre-configured Rev X-tend feature that gives 500 RPM more than stock include units for Harley Davidson, Victory motorcycles, and many Honda, Yamaha, Kawasaki , and Suzuki models that only have only one or two cylinders.


In the Power Commander V software you can enable Rev X-tend by going to Power Commander Tools>Configure>Feature Enable and Input Selections.


Do I need Rev X-tend to run my bike on the dyno?


Why would I need to adjust my RPM?

The Rev X-tend feature can be setup to lower a engine’s rev-limiter. You might want to lower the rev-limit RPM to limit the power output for a novice rider. In most circumstances the feature is used to raise the rev-limiter for a modified engine that has the capability of producing more power at higher RPMs.

How do I set my RPM to a different configuration?

In some cases, you can get 500 RPM more than stock just by checking the Rev X-tend enabling checkbox in the Features window of the PC5 software. A key-code is needed if you want to set the Rev X-tend feature at any other RPM than what it is set at currently.


What is the key-code for?

A key-code is only needed if you want to set the Rev X-tend feature at any other RPM than what it is set at currently.
You must submit a Rev X-tend Request Form to get a key-code from Dynojet. You can download the Rev X-tend Request Form here: http://www.powercommander.com/downloads/GeneralDocuments/FormWaivers/RevXtendReqForm-1.pdf

It can be faxed to 702-399-1431, or you can e-mail the form directly to tech@powercommander.com as an email attachment. Please make sure the serial number, return email address, and desired rev-limit are clearly legible and that the form has a signature.

As always, let us know if you have any questions.

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We’ve been tuning 2017 H-D’s, have you?


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As mentioned in the last post, we started development on the new 2017 H-D models back on 8/23/17.  To date we’ve been through 7 different versions of firmware that are specific to the new models and the results have been great.  Thanks largely in part to our strong network of Power Vision beta testers; including shops, tuning centers, and otherwise savvy individuals that have been using our beta tool kit, we now have 82 calibration items supported in WinPV for software level 723!!

We’re busy developing tunes at this point, as are many of our technical partners.  We expect to make a public release on 9/26 and continue to build our tune database to support popular modifications.

As a side note, the Power Vision Tune License System does support the latest software levels…….give it a test drive if you’d like.  There’s not a more cost effective means on the market to tune H-D motorcycles.

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VIDEO: Power Vision Shop Benefits and Features


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This video explains how dealers and shops can use the Dynojet Power Vision and the Automated Tune License system to benefit their customers.


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Power Vision Automated Tune License Program


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Do you want to be able to tune multiple Harley Davidsons with one Power Vision? Purchasing a Tune License makes that possible. In this video we explain exactly how that process works.

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Street 500 Tuning


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As expected, there’s power and torque left on the table.  Gain 3-4 HP and an equal amount of torque on an otherwise stock bike…….this is an 11% improvement over stock!



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Video: PCFC Software Install Map Install


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In this video we download and install the PCFC software from the Dynojet website. We then download Power Commander maps and send one to our PCFC.

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Making and Measuring Power!


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Stage tuning on our 2014 Road King!

Run#7 blue > Bone stock, OEM tune, 34 miles on the odometer

Run#4 red > Power Vision custom tune, otherwise stock

Run# 3 green > S/E Stage 1 Air Cleaner, Fuel Moto 4″ Slip-ons, Power Vision custom tune

Run#5 purple > S/E Stage 1 Air Cleaner, Fuel Moto Jackpot 2-into-1, Power Vision custom tune

Run#4 olive > S/E Stage 1 Air Cleaner, Fuel Moto 2-into-1-into-2, Power Vision custom tune





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Major Release Announcement – Autotune, Quicktune, New Tunes, More Tuning Parameters, CAN ECM Trip Center (MPG), etc


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The best tuning product in the world for Harley-Davidson Motorcycles just got better.  You can now update your Power Vision to include many new features, including the immensely helpful and popular Autotune feature.  Here are some notes on the feature enhancements to the firmware, software (WinPV), and tune database available NOW via the PV Update Client!

Firmware Version: 2.0.0-1193

  • AutoTune Basic and Pro >>  click here to learn more
  • Quick Tune – edit your tune without a laptop
  • Changed the default color on “Day Mode” of the datalog theme to display the channel in black, as opposed to white.
  • Datalog “Auto Signal Config” – Allows you to select popular groups of signals for narrowband tuning, wideband tuning, general, and manual.
  • Added logic and automatic adjustment for VE clipping (127.5) when using Autotune
  • Units in Autotune Settings default to the units (imperial or metric) that are set in the Power Vision (“Settings > Units” in the Power Vision menu).
  • Reduced the visual warning when learning is not allowed (no more red screen, instead the cell area shades slightly, but you still get the text warning flashing on the screen).
  • Dual License support – Power Vision can now lock to and remember 2 bikes (requires Dual License).
  • Tune License support – Power Vision will now automatically “remember” those bikes that have been tuned in the past.
  • Added the ability for Power Vision to display Autotune lambda as AFR (Assuming stoich = 14.6)
  • Added the ability to select theme, day/night
  • Fixed Line-Based CSV logging to only output a new line when an entirely new frame comes in, not just when only one piece of data comes in.
  • Added option to select log format.
  • Fixed datalogging bug where negative Spark Advance values were shown as large numbers like 125 instead of -3.
  • Added support for keeping multiple tune licenses on the PV, and the ability to purchase and enable a 2nd hardware lock for each PV.
  • Made “Restore Original Tune” more robust, especially in the case of a corrupted ECM.
  • Added BETA pin (319248) to UPGRADE a tune with new items.
  • When no CAN DTC’s found, display message to that effect.
  • Changed the “cancel” button on the Load Tune menu to “Exit”.
  • Added support for strategy 96.
  • Put in trial code to stop logging when disk space available drops below 10%.
  • Corrected default J1850 gallons used scaling for Trip Center.
  • Added “spark adjust by head temp / inlet air temp / engine temp” tables to all calibration levels
  • PV Update Client Version 1.0.5: Added support for PV Log Tuner updates.
  • Added Charge Dilution Effect (EGR effect) for all other strategies (all but CAN and 74)
  • CAN ECM Trip Center support
  • Added Active Intake and Exhaust for strategies 241/242

WinPV 1.0.68

  • Fixed bug for international users where cut & paste didn’t work properly.
  • Fixed bug in Compare “View Deltas as Percent” when you clicked on a cell it would set to 0 instead of the current cell value.
  • Fixed bug with Upgrade Tune not working for a lot of users.
  • Added support for backing up multiple ORIGINAL tunes from a PV.
  • Added function to WinPV to upgrade PVT tune.
  • Fixed an issue where some PC’s couldn’t connect to the PV (Use setupapi).
  • Fixed bug with crash when loading some logs off the PV.
  • Added ability to “copy table to clipboard” in order to make it easier for forum members to post a tuning table, etc.
  • Ability to show difference between Active and Compare file as a % when in “Delta Mode”
  • Ability to show differences only (in treeview) when comparing Active and Compare files
  • Get Datalog function allows you to “Get”, “Get and Delete”, or just “Delete”

Tune Database

  • Added calibrations and support for all 2013 model year bikes
  • Over 800 calibrations available for various modifications and combinations



————————————–Break / Older Info———————————————————————-

Firmware 1.0.6-904


  • Fuel Mileage Trip Center – allows you to correct Distance, Fuel Used, and MPG channels to yield accurate MPG readings.
  • Fuel Mileage Trip Center – allows you to correct Distance, Fuel Used, and MPG channels to yield accurate MPG readings.
  • Auto Channel Setup for Log Tuner Sessions, along with “Visual VE Table” with flying cursor and cell count (PIN 319245) .
  • Added new diagnostic test: J1850 Read Freeze Frame data
    • If in the event the “Check Engine Light” illuminates, you can enter PIN 924107 and select “Read Freeze Frame Data”.  This will show (on the device) the vehicle’s operating conditions and sensor values present when the fault occurred.  The freeze frame report is contained within the “DiagnosticHistory.txt” file that’s able to be extracted and read with WinPV.
  • Fixed bug where “C” Diagnostic Trouble Codes were being displayed as “X” codes.
  • Only show the “Trips since last DTC” if there is a DTC


WinPV Software


  • Added Smooth and Interpolate functions to WinPV
  • Added Undo function to WinPV
  • Added “Revert to Last Loaded” function to WinPV
  • Added a visual indication to identify parameters that don’t match when using the compare feature.  This offers a quick, easy way to identify where the tune has changed.
    • Yellow Flag = different
    • Green Flag = doesn’t exist in compare, but does exist in active file (so you can’t comare it to the compare).
    • Red Flag = exists in compare, but does NOT exist in active file (so you can’t edit it)
  • Added “Exit PC Link Mode” function to WinPV.  This will allow you to enter a few menus, such as “Datalog” without the need to have the Power Vision attached / plugged into the bike.  No more draining the battery to assign channels to gauges



Tune / Configuration Database


  • Added support for ECM p/n 32534-11, 2011 Service ECM for “drive by cable” J1850 bikes




Firmware 1.0.4-843


  • Added support for 242 level calibrations (2011+ Softail)
  • Added code to enable channels required for Log Tuner / Auto Tune
  • New EUAO (end use adjustable options); MPG Calibration, BPW Gas Constant, and Closed Loop on / off, and Speedo Calibration
  • Save the Advanced/Basic state for signal selection dialog on datalogging screen
  • Enhanced support for CAN (2011 Softail) models, including more tune items, ability to read / clear DTC’s, and reset adaptive trims
  • Added a prompt to reset adaptive fuel / idle trims when flashing the ECM
  • Added “Please Wait/Loading Tune” after pressing “Flash” button. The pause made it seem like the Power Vision was not responsive to the command.
  • Changed Power Vision software / GUI to include improved file management / work flow
    • You can now create a “Copy of Original Tune” or “Copy of Current Tune”.  This will essentially allow you to “update your tune” with the latest tune items, such as speedo calibration and other tune items that have been added.
    • Dialog that included “Save Stock” and “Load Stock” is now “Read ECM and “Restore Original Tune”
    • Read ECM will gather diagnostic logs and other files required for support purposes


Software Installer 1.0.30 / WinPV


  • Original Tune is automatically backed up to your computer, under C:\My Documents\Power Vision\Original Tunes
  • Changed Power Vision Tool Bar / commands
    • Removed “Backup Stock” and “Restore Stock”, replaced with “Get ECM Data”.  This new function will retrieve the files generated from “Read ECM” on the Power Vision.  These files are for support / diagnostic purposes and include; current tune (in a format that’s not able to be edited), “DiagnosticsHistory.txt”, and Update_Log.txt.
  • Throttle Blade Control and Throttle Blade Control (Alternate) tables now have a dynamic header description.  This description indicates which table is used with which gear, and varies based on the value entered in the Electronic Throttle Table Transition Gear.
  • Added provision “Show as Lambda” option for AFR based calibrations
  • Added new tune items
    • MPG Calibration
    • BPW Gas Constant
    •  Closed Loop On / Off
    • Adaptive Control Enable Temperature
    • Electronic Throttle / Drive-by-Wire Speed Limit vs Gear
    • EITMS Off Temperature
    • EITMS On Temperature
    • Knock Control Disable Temperature
    • Knock Control Enable Temperature
    • PE Disable TPS
    • PE Enable TPS
    • Electronic Throttle Table Transition Gear
  • Removed File / Partial / Save All provision


Tune Database

  • Added various calibrations for 2011 Softail
  • Includes better support for pre-2008 bikes
  • Over 460 calibrations available for various modifications and combinations


Older items archived………


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Autotune – a Product and a Process


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What is Autotune, a product or a process?  At Dynojet we throw around the term Autotune quite frequently, so let me do my best to explain what it is, and what it does.  This document is intended to cover the basics, and is by no means a comprehensive guide to EFI tuning, systems, or best practices.

A little EFI 101 may be beneficial to lay the ground work and better your understanding of all that’s going on in this sometimes confusing world of EFI tuning.

In the world of electronic engine management / EFI, most modern systems employ closed loop feedback for fuel control.  These systems are often based around narrowband o2 sensors that provide feedback to the ECM in regards to how rich or lean the vehicle is running.  The ECM uses it’s calibration (tune) to determine if it should maintain closed loop fuel control, and also references a target Air-to-Fuel Ratio (herein AFR) value during certain conditions (load vs. rpm).  If there’s error between what the ECM is asking for and what the OEM narrowband sensor measures, then a correction is made to adjust the lean or rich condition.  This sounds great, and it is, but here’s the kicker……..narrowband sensors are ONLY accurate at, or near, the stoichiometric value of the fuel being used, which is 14.7:1 for gasoline.  This value is where complete combustion would occur, if it could occur, and is where you would achieve the best fuel efficiency.  This value, however, is NOT ideal for all operating conditions of a Harley-Davidson motorcycle, or any engine for that matter.  Achieving a balance of fuel economy and best power / torque is the goal, and we’ve developed some handy tools to take the mystery out of tuning a fuel injected H-D motorcycle.

A typical Harley-Davidson ECM calibration has areas of closed loop and open loop.  In other words, there are areas where it can “see” the AFR and other areas where it can not.  When you’re in a range that requires precise measurement, but is outside the reliable window of a narrowband sensors operation (considered 14.3 -15.2 AFR), then a tuner / EFI specialist must rely on wideband O2 sensor data.  Since the ECM does not typically use or support wideband O2 sensors, a tuner must monitor / log the AFR values generated from a wideband O2 controller (like Dynojets’ Autotune wideband O2 sensor control module).  The wideband O2 sensor values provide tuners or electronic tuning devices with data with which to make decisions on how they’ll address fueling in the open loop regions of the tune (those regions where the ECM has no idea what the AFR really is).  In either case, if the target AFR from the calibration is NOT achieved, the error must fixed by measurements acquired from the stock O2 sensors or aftermarket wideband sensors.  In the case of a Harley engine management system, we fix the error by adjusting the VE (volumetric efficiency tables).

Question: What does Dynojet offer to help me tune my bike? 

Answer: Autotune.

As it pertains to the Power Vision, Autotune is both a product and a process.  There are two different versions that you can use while tuning a bike:

  1. Autotune Basic
    • Free and requires no additional parts for bikes that have OEM closed loop fuel control and O2 sensors
  2. Autotune Pro
    • Not free and requires the use of our Autotune wideband O2 control module that has dual wideband O2 sensors

The Power Vision can provide meaningful tuning feedback from EITHER the OEM narrowband O2 sensors AND / OR from the Autotune module’s wideband O2 sensors……we call this Autotune Basic or Pro respectively.

So, with Autotune Basic and without any additional modules (it’s simply a process) you could use the Power Vision to take advantage of what the ECM “sees” from its OEM narrowband O2 sensors and help it achieve the target AFR.  Not only can it fix the normal closed loop range, but the Autotune Basic will actually temporarily extend the closed loop range to gain insight on the actual AFR in areas where it’s normally not allowed (high load / high rpm).   For the record >> At high load, high RPM ranges this “temporary situation” is not ideal, and this is where it’s advantageous to use Autotune Pro.  We offer Autotune Basic because essentially it’s free for the user, and it’s offered by the competition (V-Tune / Smart Tune ) as a band-aid approach to professional tuning.  This method works great in those areas where it makes sense to run in a lean state: idle, light load, and cruise conditions.  So, in any case, now the Power Vision can “see” what the ECM is commanding for AFR AND it can see what the actual AFR is in the exhaust.  Armed with this information and other data from the H-D OEM databus, the Power Vision can automatically fix the deviation between the target AFR and actual AFR by adjusting the VE tables.  The data is learned in real time, but processing the data and adjusting the tune is done in an “offline state” (key on / engine off).  In the end, the Power Vision can process the data, correct the tune, and then reflash the corrected tune into the ECM.

If you want to tune like a pro and get serious about developing a safe, efficient, and powerful tune, then you need Autotune ProI’ll start by making this statement, “Any aftermarket EFI tuning system that does NOT use wideband O2 sensors inherently can NOT give you real time, valuable insight as to how rich or lean the bike is running in areas outside of the OEM closed loop range.”  Autotune Pro is a process AND requires a product; that being the Autotune wideband control module.  The Autotune module uses wideband O2 sensors in order to measure the actual AFR in the exhaust, and these sensors can accurately sample AFR values from 10.0:1 to 18.0:1 (remember, narrowband O2 sensors are only accurate from 14.3 – 15.2 AFR).  When the Autotune module wideband O2 sensors are installed in the exhaust and you’ve selected Autotune Pro in the Power Vision, you’re on your way to a complete, refined, and powerful tune. The Power Vision, when running in Autotune Pro mode, will actually temporarily set up your tune just like a professional tuner and datalog all required channels WITHOUT using a computer.  Just like Autotune Basic, the entire process is attempting to correct the error from what’s commanded in the ECM defined as the target AFR, and the AFR that’s actually measured in the exhaust. Armed with this information and other data from the H-D OEM databus, the Power Vision can fix the deviation between the target AFR and actual AFR by adjusting the VE tables.  The data is learned in real time, but processing the data and adjusting the tune is done in an “offline state” (key on / engine off).

Neither Autotune Basic nor Autotune Pro require that you interface with a computer when using this feature.  Power Vision sets up the tune, monitors and logs the data, and then corrects the tune to ensure what you ask for (in the AFR table) is what you get.  You essentially have a full time professional tuner inside your Power Vision with the Autotune feature.

So, how do you know if your bike can be fitted with an Autotune wideband O2 controller and the included 18mm wideband O2 sensors that are required for the Autotune Pro feature?

  • On bikes that didn’t have factory closed loop fuel control / O2 sensors, you are left no choice but to weld 18mm O2 bungs into your exhaust OR buy an aftermarket exhaust system that had 18mm O2 bungs
  • On bikes that had factory closed loop fuel control / 18mm narrowband O2 sensors, you can simply remove them and install the 18mm wideband O2 sensors.  This requires that you temporarily (or permanently) disable closed loop……..or…..if you wanted to retain the OEM narrowband O2 sensors / closed loop fuel control AND install the wideband O2 sensors then they’d have to weld in bungs to their exhaust to accommodate the wideband O2 sensors.
  • If the bike has factory 12mm O2 sensors, and the guy wants to retain his stock exhaust, then there is no choice but to have 18mm O2 bungs welded into the exhaust.
  • On bikes with OEM 12mm narrowband O2 sensors, you could remove them and opt for an aftermarket exhaust that had 18mm O2 sensor bungs.  This will require that you disable closed loop.  If you wanted to retain the OEM narrowband 12mm O2 sensors / closed loop fuel control AND install the wideband 18mm O2 sensors, then you should look for aftermarket pipes that retain the factory 12mm O2 sensors AND had provisions for the wideband 18mm O2 sensors.

Note >> In 2010 Harley introduced the small 12mm O2 narrowband sensor on the Touring Models, and that has continued to be the case through the current model year for the Touring Model.  In 2012, Harley decided to use the small 12mm narrowband O2 sensors on Dyna, Softail, and V-rod as well.  Sportsters continue to use larger 18mm narrowband O2 sensors.

Note>> Not all aftermarket Exhaust systems have the needed 18mm bungs, it is best to check with the manufacture of the exhaust system.



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