Tuning instructions

Before you start

When you read a vehicle, you are transferring calibration information from the control module(s) in your vehicle to VCM Editor. The read process will automatically detect the presence of relevant VCMS in the vehicle and read them all in sequence. The various status messages and the progress bar give information about the current state of the read.

It is not possible to harm any of the vehicle's control modules during the read process. If communication is lost, the program will automatically reset the module. It will then prompt you to correct the problem and/or try again.

What you need

HP Tuners MPVI4

Read Procedure

1. Connect your HP Tuners interface device to a laptop with VCM Suite installed. Then, connect the device to the vehicle's OBD-II diagnostic port.

2. If VCM Scanner is already open, close it before proceeding.

3. Open or Re-Open VCM Editor.

4. If a tune file is open, close it by selecting File > Close in the menu bar.

5. Turn the vehicle ignition to the ON (or RUN) position, but do not start the engine. NOTE: Some vehicles require special procedures to be put in the correct state.

6. Make sure the doors are closed and all accessories are turned off.
CAUTION: Do not use any vehicle accessories, including the door locking mechanism while the vehicle is being read.

7. In VCM Editor, select Flash > Read Vehicle.

8. The Vehicle Reader window appears. Wait 10 to 15 seconds.

9. Click the Read button.

10. Allow VCM Editor to read the vehicle controllers until the status bar indicates the read is complete. NOTE: During the read, the instrument panel may briefly display all sorts of indicators anderror messages and some accessories may appear to turn on and off randomly. This is normal. NOTE: For vehicles with multiple VCMS (for example: LS2 A4 vehicles), there is a 15-secondpause between reading each module.

11. Turn off the ignition and unplug the interface cable.

12. The file will automatically open in VCM Editor.

13. If this is the initial read of the stock controller, we strongly recommend that you save (and backup) the file before any modifications are made. You may wish to restore your vehicle to the stock tune at a later date.

Video tutorial

To watch this process step-by-step, click here.

How to get a datalog

Before you start

Make sure you are running the latest version of the HP Tuners VCM Suite BETA. If you need to download this, you can find the link here.

What you need

HP Tuners MPVI3 Device

Laptop

How to get the infolog

1. Plug your MPVI device into you vehicle and hook it up to your laptop. Make sure your vehicle is in accessory mode (key one, engine off).

2. Open up the VCM Suite BETA and select the info icon located on the  top task bar. It is the last option, and is a blue circle with a "i" in it.

3. Inside the tab that opens, click the info button again.

4. Once all your info has populated, click the save button located next to the info button. Save it to your computer, and send it to us when you order your tuning.

How to get an infolog

*** Do not try and flash the stock read back into the ECM, it is a backup only. Flashing it in will burn extra credits****

**NOTE 2020+ JEEP/RAM ECO DIESELS MAY REQUIRE A PCM MODIFICATION SERVICE TO UNLOCK THE PCM BEFORE TUNING**

**WARNING** 2018+ NEED SPECIAL SGM Bypass cable on the 2018 + eco diesels. Without a bypass cable, you will not be able to successfully tune your truck.  

MAKE SURE YOU ARE USING THE VCM SUITE BETA VERSION AND ALSO MAKE SURE THERE ARE NO UPDATES BY CLICKING HELP AND THEN ABOUT ON THE VCM EDITOR (BETA) WINDOW.

You can find the latest BETA version of VCM suite here   --> https://www.hptuners.com/downloads/

MOST ECO DIESEL'S NEED A PATCH FILE TO BE FLASHED INTO THE PCM BEFORE BEING ABLE TO GET A FULL STOCK READ FILE, AS SOON AS YOU GO TO READ OUT THE STOCK FILE, IT WILL PROMPT YOU TO DO THE FOLLOWING:

Step 1: Connect to the truck with HPTuners and open VCM Editor (BETA) on your computer.

Step 2: Go to Take a stock read of the truck, it will then give the following prompt

Step 3: It will ask to create a patch file which it will also ask you to save do so and save it as _MOD.hpt or whatever you like.

Step 4: Flash in the patch file that you saved, then you will be able to get a consistent read afterwards. To close out of the patch file to get the stock read, look at the top left of the VCM editor window and you will see a folder that when you hover over it with your mouse will say: "CLOSE", click that and then read out the stock file and attach it to this order.
To flash the controllers (ECM and TCM) HPTuners requires credits for the ECM and for the TCM. You must have the credits in order to flash the controller. If you already have enough credits and do not require anymore then you purchase just the tune without the credits, and vice versa.

14-19 EcoDiesel ECM Requires 4 credits

20-23 EcoDiesel ECM Requires 6 credits

EcoDiesel TCM Requires 4 credits

The current tune list is

0HP stock lightweight
25Hp
45Hp
65Hp
85Hp

We can add the exhaust brake to any tune as well.

For the trans tune we are increasing line pressure, moving the shift points slightly to take advantage of the added power and reworking torque converter unlock and lockup.

Quick start

Watch the video instead of reading here.

Before you start

Make sure your vehicle is turned off, and plug in your SCT X4 to the OBD2 port. Once you have done both of these steps, we are ready to start.

What you need

SCT X4 Performance Programmer

Procedure

1. Navigate to the Main Menu screen on the X4.

2. Use the arrows to scroll down to the Vehicle Info option and select it.

3. Follow to prompt on screen and start your vehicle. After waiting 4-5 seconds, hit continue.

4. In this section you will find the ECU and TCU Strategies. 

Quick start

Here is the Video Tutorial for returning your vehicle to stock with the SCT X4.

Before you start

Connect the device to your vehicle’s OBD II service port using the OBDII cable provided in the packaging.

What you need

SCT X4 Device

Procedure

1. With the unit powered on and connected to the vehicle, highlight and select the “Program Vehicle” option.

2. You will next see the “Street Use Notice” disclaimer, here you will be able to highlight and select “Return to Stock” at the bottom of the screen. 

3. Depending on your device settings you may be prompted to “Turn Key On”. If so, please turn the ignition key to the “On” position but do not start the vehicle, Select “Continue”.

4. Select “Continue” again to confirm you would like to return the vehicle back to stock.

5. The next screen, possibly two, will differ between vehicles. You will be prompted to “Turn Key Off” and/or “Turn Key On”. It’s important here to follow the prompts from the device.

6. The device will now upload the original file saved from when you tuned the vehicle (“Stock File”) back into the vehicle.

7. After this is complete the device will display a “Download Complete” screen. You can now turn the key to the off position. For GM vehicles you may see a “Power Down ECU” screen while the vehicle completes some power-down procedures.

8. You have now successfully returned your vehicle to Stock.

Before you start

Make sure your vehicle is turned off, and plug in your SCT X4 to the OBD2 port. Once you have done both of these steps, we are ready to start.

What you need

SCT X4 Performance Programmer

Procedure

1. From the Main Menu select Device Info

2. Here you will find the devices serial number

Important

An unlock should only be purchased when:

1.  Your device is either married/installed on a vehicle that you are no longer able to return back to stock due to not having the vehicle anymore.
2.  You bought a used tuner that was locked.  
3.  Your device is out of the five-vehicle unlocks. 

Remotely unlocking your device does not add any additional features to your device.

Note: This service is non-refundable and this service is not available in the state of California.

Before you start

If you have a 7015 (Ford Device) then please follow the instructions below. If you have any other X4 part numbers then please contact our sales department to purchase the unlock and obtain an RMA for the device to be sent in to be unlocked. 

What you need

SCT X4 Device

SCT X4 Unlock

Window PC

Procedure

1. Open the Device Updater on your Windows computer.

2. If you do not have the Device Updater, click here 

3. Plug the device in and then click on "Automatically Check for Updates." This option will appear on your PC, not the device itself. 

4. Once the update has finished your device is unlocked and ready to be used again. 

NOTE: The unlock must be done using a Windows PC. You may not use wifi to unlock the X4.

EZ LYNK Engine Tuning Abbreviations:

• SOTF - Switch on the fly (If the Vehicle is equipped with a switch)
• FT/FTP- Fuel Temp SOTF Switch
• CAC - Charge Air Control SOTF Switch
• LBF - Low Boost Fuel
• RUMBLE - Rumble Idle Sound (VGT Turbos Only)
• HISS - Hiss Idle Sound (VGT Turbos Only)
• Em.on - Emissions On Tuning / Em.off - Emission Off Tuning
• MODVGT - Modified VGT Turbo
• NONVGT - Non VGT Turbo / Fixed Vein Turbo
• 4IN - 4 Inch Intake (Stock)
• 5IN - 5 Inch Instake
• CP3 - CP3 Pump Conversions

EZ LYNK Transmission Tuning Abbreviations:

• KAM Reset - Load this tune first prior to installing any modified trans tuning files (FORD)
• LSP - Low Shift Points
• SSP - Standard Shift Points
• RSP - Raised Shift Points
• HSP - High Shift Points

EZ LYNK Alternative Abbreviations:

• ST – Single Fuel Tank
• DT – Dual Fuel Tank
• SRW – Single Rear Wheel
• DRW – Dual Rear Wheel
• MAN – Manual Transfer Case
• ELEC – Electric Transfer Case

Before you start

A datalog records vehicle sensor data while the engine is running. Your tuning technician can review this information to investigate a concern, check how your vehicle is responding to its tune, and determine whether revisions are needed. The Auto Agent app lets you record this data and share it remotely.

Before recording, ask your technician which parameters to select, which tune or power level to use, and what driving conditions they need. The requirements will depend on your vehicle and the reason for the log.

CAUTION: Set up the app while parked. Do not operate your phone while driving. Have a passenger manage the recording or start and stop it while safely parked. Any full-throttle testing should take place in a suitable controlled environment under your technician’s instructions.

What you need

• An EZ LYNK Auto Agent connected to your vehicle.
• A compatible phone or tablet with the Auto Agent app installed.
• An EZ LYNK account with your vehicle linked to the correct tuning technician.
• An internet connection to send the completed datalog.
• Any logging instructions supplied by your technician.

Datalog Procedure

1. With the vehicle parked, turn the ignition to ON / RUN and connect the Auto Agent to the OBD-II diagnostic port.

2. Open your phone’s Wi-Fi settings and connect to the Auto Agent’s EZLYNK_… network.

3. Open the Auto Agent app and confirm that the correct vehicle shows as Connected.

4. Open Vehicle > Technicians and confirm that your tuning technician is listed.
NOTE: Your tuning technician may be different from the retailer who supplied your device. If you are unsure which technician should receive the log, contact OCDiesel before proceeding.

5. Open Menu > Dashboard and configure the parameters requested by your technician. Depending on your app layout, use the dashboard tiles or graph selections to choose the data you need.

NOTE: Parameters are also called PIDs. Examples include engine RPM, throttle position, boost pressure, and desired versus actual fuel pressure. Available parameters vary by vehicle. Use your technician’s list so the recording contains the information needed for review.

6. Start the engine and confirm that the selected readings are updating. Unless your technician has requested a cold-start log, bring the vehicle to normal operating temperature before recording.

7. From the Dashboard, open the recording options in the upper-right corner and select Record Datalog. Confirm that recording has started before beginning the requested test.

8. Record the conditions requested by your technician. This may include idle, steady cruising, a particular shift, or the conditions where you notice a concern. Keep the recording focused on the requested test.

CAUTION: Stop the test if the vehicle develops abnormal temperatures, severe misfires, unusual noises, or other signs of a mechanical problem.

9. If helpful, have your passenger add a bookmark when the concern occurs, or note the approximate time so your technician can find it in the recording.

10. Once the test is finished and you are safely parked, press the red Stop button. Save the datalog with a clear name and useful notes, then select Done.

For example: “Order 12345 — Tow tune — Surge at steady cruise.”

Send the Datalog

11. Make sure your phone has internet access. If it cannot access the internet while connected to the Auto Agent’s Wi-Fi, finish and save the recording first, then switch to mobile data or another Wi-Fi connection.

12. Open Menu > Datalogs and select the recording you just saved.

13. Select Send to Technician, choose the intended tuning technician if prompted, and complete the send process. Allow the upload to finish before closing the app.

14. Email your technician or update your existing support ticket to let them know the datalog has been sent. Include your order number, the tune or power level used, a description of the concern, and when it occurred in the recording.

NOTE: Sending a datalog does not automatically request or install a revision. Explain what you need reviewed and wait for your technician’s instructions.

Check out our video on how to get there here.

What you need

EFILive AutoCal V3

Laptop

Battery charger

Read Procedure

1. Hook up your vehicle to a battery charger

2. Connect your AutoCal device to the OBDII port and your laptop

3. Launch the EFILive Program

4. Place the vehicle in accessory mode. To do this turn the key to the ON position, but do not start the engine

5. Go to the Tune tab in the EFILive Program

6. In the "Read" tab, choose "Auto Detect"

7. Click on "Read"

8. Follow the instruction to turn off the vehicle and wait for the countdown

9. Save your stock read file by clicking the save button at the bottom of the screen

10. Email your read file to service@ocdiesel.ca

Before you start

A datalog records vehicle sensor information for your tuning technician to review. AutoCal V3 can save this data directly to the device while you drive. Once finished, you can copy the recording to your computer and send it to your technician.

Your AutoCal must already have the correct logging configuration installed. Ask your technician which controller/PID selection, tune level, and driving conditions to use.

NOTE: These steps use EFILive’s standard menu. If your AutoCal has a custom menu supplied by your tuner, the options may be named differently. Follow the instructions supplied with that configuration.

CAUTION: Set up the device while parked. Do not operate the AutoCal while driving. Have a passenger manage the recording or start and stop it while safely parked. Secure the device and cable away from the pedals and steering controls.

What you need

• An EFILive AutoCal V3 with the correct logging configuration installed.
• The AutoCal’s OBD-II cable and USB data cable.
• A Windows computer to retrieve the recording.
• Internet access to send the file to your technician.
• Any specific logging instructions supplied by your technician.

Datalog Procedure

1. With the vehicle parked, connect your AutoCal V3 to the vehicle’s OBD-II diagnostic port.

2. Turn the ignition to ON / RUN, leaving the engine off while you select the logging configuration.

3. On the AutoCal, open Scan Tool > F1: Select PIDs.

4. Select the controller/PID configuration specified by your technician.
NOTE: PIDs are the individual readings captured in the log. If the required selection is missing, contact your technician for the correct setup before continuing.

5. Open Scan Tool > F2: Data Logging > F1: Record Data.

6. Confirm that the screen shows recording activity, including elapsed time and an increasing frame count.
NOTE: Display Data only shows live readings. It does not save a datalog.

7. Start the engine and record the conditions requested by your technician. For a warm-engine test, allow the vehicle to reach normal operating temperature before the requested driving portion. If a cold-start log was requested, begin recording before starting the engine.

8. Keep the recording focused on the requested test or concern. Note approximately when the issue occurs so your technician can locate it in the log.
CAUTION: Stop the test if the vehicle develops abnormal temperatures, severe misfires, unusual noises, or other signs of a mechanical problem. Perform any requested full-throttle testing only in a suitable controlled environment.

9. Once the test is complete and you are safely parked, press X to stop recording and save the log. Allow saving to finish before switching off the ignition or unplugging the device.
NOTE: The ✓ button pauses or resumes recording. Use X when you are finished and want to save the file.

Retrieve the Datalog

10. Disconnect the AutoCal from the vehicle and connect it to your Windows computer using the USB data cable.

11. On the AutoCal, select Options > F2: File System > F3: USB Thumb Drive.

12. Open File Explorer on your computer and locate the AutoCal’s removable drive. This mode lets you copy files using Windows without opening EFILive software.

13. Open the EFILive > Scan folder and locate your recording. AutoCal V3 datalogs use the .pld file format. Use the recording time and filename to identify the correct file.

14. Copy the datalog to a folder on your computer where you can easily find it. Keep the original on the AutoCal until you have confirmed that the copy was saved successfully.

15. Eject the AutoCal drive through Windows before unplugging the USB cable.

Send the Datalog

16. Attach the saved .pld file to your email or support ticket using the contact method supplied by OCDiesel or your tuning technician. Send the actual recording file so the technician can review the data.

17. Include your order number, vehicle details, tune or power level used, and a description of what you want reviewed. If the concern occurred at a particular point in the log, include the approximate time.

NOTE: Recording and sending a datalog does not change the tune installed in your vehicle. Wait for your technician’s review and any further instructions.

What you’ll need:

EFILive AutoCal V3

Laptop

Battery charger

Flashing Your EFI Live Tune – Duramax 2001–2010

If you’re running a 2001-2010 Duramax 2500 or 3500, you’ll need to pull a few specific fuses before tuning. (If you’re working on a 4500, 5500, Kodiak, or TopKick, good news, you can skip the fuse removal step entirely.)

Consult this chart for fuses.

Before You Start

Hook up a quality battery charger. A stable voltage during the flash is crucial, low voltage is the #1 reason a tune fails to load properly.

Procedure:

1. Connect the AutoCal

Plug your AutoCal into the truck’s factory OBD2 port.

2. Turn the Key On

Switch the ignition to the Run position (don’t start the engine).

On the AutoCal, navigate to Tune Tool.

3. Select Your Tuning Option

Choose Tuning → Program Full.

2011-2016 Duramax LML:

If you have a 2011–2016 LML Duramax, select Program Calibration instead.

If we provided you with a stock file, flash that first using Program Full, then flash your tune file using Program Calibration.

4. Confirm the Tune File

When the file appears, double-check that the last six digits of the file name match the last seven digits of your VIN. That confirms you’ve got the correct tune for your truck.

5. Acknowledge the Warning

You’ll see an “Attention” screen on the AutoCal, read it, then hit OK.

6. License the Tune

Your AutoCal will prompt you to license the device to the truck. Hit OK on both pop-ups.

7. Flash the Tune

The flashing process will start. Sit tight while the tune writes — this usually takes a few minutes.

When it’s done, you’ll see a message that says:

“Flash Tune File Completed Successfully.”

8. Power Down Properly

Once the flash completes, hit the Check mark on the AutoCal. A 10-second countdown will begin — turn the ignition off during that countdown to finalize the flash.

9. Transmission Tuning (If Applicable)

If your setup includes transmission tuning, repeat Steps 4–9 but select your A50 or T87 TCM file when prompted.

10. Fire It Up!

Turn the key and start the truck. If everything went smoothly, it’ll fire right up with the new tune. Take it for a quick test drive to confirm everything feels right.

What you need

EFILive AutoCal or FlashScan device

Laptop

USB cable

EFILive Program

EFI Authorization Codes

To purchase an EFILive VIN license, we need your device serial number and authorization code.

Please note: If your AutoCal is linked to another tuning company, contact that provider for unlink codes and unlink the device before adding tuning from a new provider.

Authorization Code Procedure

1. Connect your AutoCal or FlashScan device to your laptop using a USB cable

2. Launch the EFILive Program

3. Click on “Check Firmware” and update the firmware if required. Once complete, click “OK”

4. Click on “F7: Licenses” to open the FlashScan and AutoCal Licensing window

5. Select “F3: VINs”

6. Confirm your device shows that more VIN licenses may be purchased

7. Click on “Generate Auth Code”

8. Copy your authorization code and device serial number and email both to sales@ocdiesel.ca

Note: If your device will not generate an authorization code because it has reached its VIN slot limit, email sales@ocdiesel.ca. We’ll help confirm whether you need Max VIN Slot Codes and provide the next steps.

EFILive Error Codes

If you are experiencing an error on your AutoCal device it can be for a number of reasons. It is worth noting that there are multiple fixes for each error code, and they aren't all necessarily one-size-fits-all solutions.

That being said, we do have an EFILive Error Code resource available here so you can reference the error codes.

If you purchased your AutoCal or tunes files from us, you will have support available from our tuning desk. To access support, please submit a Tuning Support Ticket.

Before you start

This allows your custom tuner to write tunes that can be flashed to your truck.

This process WILL NOT alter your truck in any way, it will operate normally afterward.

What you need

MM3 Touchscreen Tuner

Read Procedure

1. With the vehicle in accessory mode (Key on/Engine Off) from any gauge screen, tap anywhere on the screen

2. Press “Main Menu"

3. Press the “ECM” button

4. Press the next “ECM” button

5. Press “Get Stock File For Truck”. Now you should see a pop-up saying "Get UDC file "" was successful.".

6. Next place the SD card in your computer using the included Micro-SD to USB adapter and open your email. Using the “attach” button in your email (typically a paperclip icon):

• Navigate to the SD card
• Open the custom folder
• Open the stock folder

7. Now you will see the following file:

• For an MM3 Tuner will be called “STOCK.MM3”
• For a Smarty Touch tuner it will be called “UDCStock.s2g”.
  (You will notice an incorrect date associated with the file; this is normal.)

Note: the files mm3.mmu and mm3.sgn (for MM3 customers) OR smarty2g.iap and smarty2g.sgn (smarty touch customers) are not the stock files!  Sending anything other than “stock.mm3” or “UDCStock.s2g” will DELAY delivery of your tunes.

8. Once you have got the file, attach it to your tuner order form or submit it to service@ocdiesel.ca.

What you need

2018-2022 Cummins 6.7L Bypass Cable

How to install the cable

1.  Twist the tan and yellow wires so that there is at least one twist every two inches.

2.  Carefully, remove the OBDII connector from the dash by depressing the tabs on the sides.

3.  Remove the two grey pin retainers from the back of the connector. 

4.  One at a time, remove & replace the yellow and brown wires from locations 6 & 14. For a 2018 truck, replace the yellow with yellow and the brown with tan. For the 2019-2022s, replace the yellow with tan and the brown/green with yellow. No matter the wire colors, the pins go in 6 and 14.

Note: If you install the cable and can’t connect to the truck, try swapping the wires.

Another Note: A 1.5mm wide flat terminal release tool or a pointed sewing needle works for removing pins.

5.  Reinstall the two grey pin retainers.

6.  Locate the green “Star” connector above the parking brake. For 2018 plug the harness into any empty space, for 2019-2022 plug the harness into the fifth position from the left at the bottom.

7.  Cover & insulate the pins you removed from the OBDII connector.

8.  Reinstall the OBDII connector into the factory location.

Notes

This cable is meant to be installed and left in the vehicle, NOT intended to be uninstalled and re-used. Once installed, the OBDII will still function normally.

The Cummins Bypass Cable (also known as the Security Gateway Module Bypass cable) can be used in the following scenarios and with multiple platforms: flashing a tune, changing the tire size, adding an aftermarket remote start, using a Snap-on or other OBDII scanner, or adding AMP Steps

The locations are much easier to see with images. Please click here to view the full article with photos.

Retrieving your credits on TDN

Retrieving your credits on TDN