HPTuners MPVI3 procedures Downloading Tune . Data logging and Scanning

HPTuners is the latest and greatest way of tuning using the MPVI3, rather than using a handheld programmer from which to load tunes. It communicates via the interface (MPVI2) communicating directly from a laptop(must be Windows-based not Apple/IOS) to the vehicle's OBD2 Port. You also use the interface to datalog so we can refine the tune to the vehicle.

There are 2 programs you'll need to download, VCM Editor BETA, and VCM Scanner Beta; these are part of the VCM Suite Latest Beta. The editor is what you use to write tunes to the vehicle, and Scanner's purpose is to datalog. You will go to https://www.hptuners.com/downloads/ to download the latest version of the VCM Suite Latest Beta. In the picture below from the HPTuner website, it is the download on the right that is blue.


MPVI3 Initial instructions:

An MPVI3 requires a wifi connection to read/write to the vehicle.

Once you receive your HPTuners MPVI3 tune you will need to make an account on HPTuners and register your device. 

Once you register your MPVI3 it is time to read your vehicle's base file. For this, you'll need to go out to the vehicle, plug in the MPVI3 to your laptop and vehicle OBD2 port, and open the VCM editor, select "Read Vehicle". You have to have the ignition key on the engine off. With the editor open you will select the green arrow which is the read function. It will then pop up in the middle. Then select "Read" again. Pictured below you will see you read the engine and transmission, you select to not read the FSCM. There is no reason for most vehicles to read this, and if you read it and then try to write it charges extra HPTuners credits to write the FSCM. Reading the factory tune will take 2-15 minutes depending on the vehicle. After the read is complete VCM Editor will automatically prompt you to save the file. Please save this file as it is your original read and have it saved to the desktop(it is easier to find then).  Afterward, send your base tune file as an attachment via email at Mailordetuner@gmail.com and put your order number in the subject line.  Do not drag and drop your file to the email it does not open correctly for us.   



General Instructions (not device-specific) :

Once Casey sends a base tune for your application (again your original tune file is needed for this step to happen), you will open it with VCM Editor, and select “Write Vehicle” (red arrow now). Again ignition will be Key On, Engine Off needs to happen for the write to happen.


After writing to the vehicle, it’s time to datalog. Open up VCM Scanner. Again the video earlier will help in how to log plus we have a blog to help add channels. 


Should the config not work, please manually add the following:

  • Engine rpm
  • Map sensor - Reads in KPA 
  • Mass Airflow - Frequency - Reads in HZ in logs  
  • Intake air temperature 
  • IAC steps/counts if drive-by cable 
  • Throttle position commanded
  • Throttle position actual
  • Short-term Fuel trim Bank 1 and Bank 2 
  • O2 sensor Mv for bank 1 and bank 2 
  • Commanded air fuel
  • The transmission current gear is automatic  
  • Ignition timing 
  • Engine Coolant Temp
  • Short-term fuel trim bank 1 (bank 2 as well if your vehicle has 2 upstream/front O2 sensors)
  • mph 
  • Wideband(if equipped)
  • knock retard 


After all this is done, you are ready for datalogging!

Select “connect vehicle” then hit the big red button to initiate recording. Hit Stop (blue square) to stop recording. DON'T FORGET TO SAVE IT DOES NOT SAVE AUTOMATICALLY!

Start the vehicle and let it warm up, you want your O2s to start working. Start with some light driving, stop/go. Do some 25-60% throttle. Your log will be in.HPL file format. Next, you will attach the log file and tune file matching the log, and email both to mailordertuner@gmail.com for further review. Once we receive the data log and tune we will review and make any necessary adjustments and email you a new tune file.  You must attach our tune file with your data log do not just send the data log. Once receive the new tune file you will do a new log with the same procedures as before plus some wide open throttle pulls.