TDN App Quick Start Guide:

1. Download the TDN App and create / log into your HP Tuners account (TDN App > Account)

2. Link ZFGR as your tuner (invite code TFWP-6913) (TDN App > Account > Link Tuner)

3. Complete device setup - Plug device into vehicle OBD-II with key on / engine off and follow on-screen instructions (TDN App> Tools > Setup “Device”)

4. Read your stock file (TDN App > Files > Read Vehicle) If you encounter ANY error messages when attempting to read the stock file, please follow the additional steps in the section below then return to step 5 (See: "Additional steps for read vehicle errors...").

5. Submit TDN Request for Stock Calibration on ZFG Website - Requires Order Number, Device Serial Number and VIN (ZFG Website > Tuning Central > TDN App Users... )

6. A baseline tune will be added to the TDN App and data logging instructions will be sent to you via email once your TDN Request is processed.

7. Complete the requested data log and sync it to the TDN, then submit a new TDN Request for Data Log Review in Tuning Central.

8. Repeat steps 5-7 until your tune is complete (sync file, submit request, receive tune revision). Please allow 2-5 business days processing time for each TDN Request.

Additional steps for read vehicle errors:

1. Take a 5-minute data log of idle (refer to page 15 of the Tuning Guide)

2. Sync the data log to the TDN (return to step 5, above)

Please note: If this applies to you, there is nothing wrong, we just need additional data. We will send you additional updates / information once the data log is reviewed. Please allow additional processing time.

The easiest way to navigate the device setup and tuning process is to follow along with our Tuning Guide, which you can find in the Tuning Central portion of our website. You will use Tuning Central to submit your preferences and requests related to tuning, and a TDN Request is required each time you sync/upload a file for review in the TDN App.

The first TDN Request you submit will be for "Stock Calibration" (once you have an order number and have read your stock tune). This request will prompt you to select preferences for tuning and reiterate your initial tuning goals.

You can make additional changes/requests throughout the process and post-finalization by submitting TDN Requests. All TDN Requests go directly to our tuner. These requests serve as tickets in our tuning queue and are answered in the order they were received. Please allow 2-5 business days for processing each TDN Request.

No!

Following the HP Tuners release effective July 11, 2025, there are no unlocks or ECU swaps required for any platforms we support. Please note that definitions will be required as new OSID are identified for recently released platforms. This may extend the tuning process by up to two weeks.

Here are direct links to the tunes for each recent release:

• 2021+ Bronco 2.7L

• 2022+ Bronco Raptor 3.0L

• 2024+ Ranger 2.7L

• 2024+ Ranger Raptor 3.0L

• 2022-2024 Expedition 3.5L

• 2022-2024 Lincoln Navigator 3.5L

• 2021-2023 F150 2.7L

• 2021-2023 F150 3.5L (including Raptor and PowerBoost).
  

We only support HP Tuners devices. Compatibility of each HP Tuners device varies by vehicle year/make/model, device type & generation, and your mobile phone's operating system (iOS or Android).

If HP Tuners recently released support for your vehicle

(e.g., 2025 Explorer, Bronco, Bronco Raptor, Ranger, Ranger Raptor, 2023+ F150, etc.):

• MPVI3, MPVI4, or RTD4 are the only compatible devices, regardless of your mobile phone.

• RTD4 supports reading & flashing via TDN only; Data logging is supported via TDN App or laptop.

• MPVI3 supports reading & flashing via laptop only; Data logging is supported via TDN App or laptop.

• MPVI4 support for reading, flashing & data logging is expected for TDN App & Laptop.

For customers with other vehicles (pre-2023 F150, Explorer, Edge, etc.):

Please see our compatibility guide below.

We recommend the RTD for most customers. For more information on recommended tuning devices, please see "Which tuning device do you recommend?"

As always, please contact us directly with any questions - Sales@tunedbyzfgracing.com

RTD vs MPVI

• An RTD ("Remote Tuning Device") is the right choice for most customers.

• The newest generation RTD4 is the only model we sell. It is the only model capable of WiFi data transfer, which is faster than the bluetooth-based MPVI and previous generation RTDs.

• An MPVI is more advanced in terms of its ability to read data from vehicles, which is only relevant to tuners and customers who would like to write their own tunes.

• In terms of functionality with ZFGR Tunes, these devices are equally capable as one another, and will provide the same end-results. Both devices support data logging via laptop/VCM Scanner if desired.

• Please note: All ZFGR tunes will be locked and you will not be able to read or edit them regardless of which tuning device you have. There are no exceptions to this rule.

Credits are what unlock your car on an HP tuners device. Once unlocked, you can flash the ECU an unlimited amount of times with the same device. See Credits 101 from HP Tuners for more information

No. As long as you are using the same device on the same vehicle as your first tune, you will not need additional credits.

The number of credits required depends on your specific year/make/model. Please click here to review HP tuners credit requirements.

Please Note: Laptop logging is supported for all vehicles, but support for laptop flashing varies. Please review our compatibility guide to ensure that your device is TDN-compatible. If your device is not listed as TDN-compatible, please contact us to verify that laptop flashing is approved for your platform.

Please take note of the following:

• Purchase your first tune - Select "Tune only - I already have a compatible device" from the first drop-down option on the tune purchase page (Select platform > Initial Tune).

• "Tune Only" does not include credits - you can purchase credits at this link (requires device serial number, found next to "S/N" on the back of your device).

• To determine how many credits are needed - please reference the Tuning Device drop-down on the tune purchase page (e.g., Add ZFGR RTD w/4 Credits = 4 credits needed).

• Your tune will NOT be sent automatically - once your purchase is complete, you must read your stock file to the TDN and submit a TDN Request on our website.

  • The required steps and how to move forward are outlined on page 10-17 of our Tuning Guide, and in our Quick Start Guide.

  • You may receive a notification that your order has shipped; this is an automated email and does not apply to tune-only purchases.

• "Additional Tunes" can be purchased after you have purchased an initial tune - to cover additional fuel types or tuning goals, please view Additional Tunes (Select platform > Additional Tunes).

Custom Tuning: Custom tuning creates a personalized tune based on your personal goals, preferences, and feedback, as well as your vehicle's specific setup and modifications. Custom tunes are written and refined over time rather than being "one and done." This approach offers the most precise adjustments available, resulting in the best performance and increased customer satisfaction. We work very hard to make sure customers get the power and driving characteristics they are looking in each of our custom tunes.

Off-The-Shelf (OTS) Tuning: OTS tunes are pre-configured, "one size fits all" tunes. They are written with the intention of being generic and broadly compatible, based on what's been tested on one vehicle. OTS tunes may not fully optimize performance due to their nonspecific nature.

Here are the basic steps on the process:

1. Place Order: Once you place your order, we ship your tuning hardware.

2. Setup Hardware: You will use the TDN App to set up your tuning hardware and pull the stock file from the vehicle (the stock tune). The TDN App will automatically send us the stock file once it has been read.

3. Submit Request: You will submit a request in the Tuning Central portion of our website with information about your vehicle and tuning preferences. The request goes directly to our tuner, who will write and send your tune(s) to the TDN App.

4. Apply Tune: You will use your tuning hardware to apply tunes from the TDN App. The first tune you receive will be the baseline tune, which only makes minor adjustments.

5. Record Data: You will use your tuning hardware to record vehicle data while doing specific types of driving. These are called data logs, which are recorded, stored, and sent to us from the TDN App.

6. Repeat: You will send us the data log(s) from the TDN App and submit another request on our website. Adjustments will be made by our tuner, and another tune will be sent. This cycle will repeat until the best tune for you and your vehicle is attained.

We are with you through every step of the process. If there are any questions or issues that come up along the way, just let us know! The best way to reach us for immediate concerns and quick questions is via email - Sales@tunedbyzfgracing.com

It depends... Most customers complete the initial process within two weeks of submitting their Stock File and first Request (see FAQ regarding theTuning Process). * * This estimate does not include shipping time for devices * *

Here are some of the determining factors:

1. The total number of Tune Revisions needed: Each vehicle requires a different number of Tune Revisions to obtain best results. You should expect to complete at least two cycles of tune revision and data logging. This includes your Baseline Tune and Revision 01.

2. How quickly you complete Data Logs and submit Requests: Each Tune Revision requires you to record and submit Data Logs. Once a data log has been submitted, you must submit a Request for review on our website. Our tuner will review the data log and make adjustments to your tune based on these submissions.

3. Completeness of Information: Missing information can inadvertently extend processing time. While our process is simple, completing all steps entirely and providing all information requested keeps things moving as smoothly and as quickly as possible.

4. Position in queue: Requests are processed in the order they were received. The volume of requests in queue varies, as does what's needed for each request.

5. Processing Time: The amount of time needed for processing each request varies depending on what is being requested, how much adjustment is needed, how much data needs reviewed, etc.

It is important to remember that custom tunes are written for your specific vehicle, according to your personal preferences and feedback. The final version, or "completion," of a custom tune is somewhat subjective. Even once your tune is marked "complete," you can choose to re-open it for additional adjustments.

We no longer offer tuning for the nGuage due to data logging limitations. We can, however, convert tune files to nGauge format for the purpose of changing tunes. This is an additional cost.

Yes, all you need to do is add the required number of credits for the additional vehicle.

We do not support these devices.

Great question! We don't know the answer, and that's why we don't use "stages" to refer to tunes or or builds.

You may notice ZFGR Stage Packages, which are tuning and parts packages we sell. These packages include multiple items and item types together. They are designed to provide a logical, progressive build based on the modifications we recommend, and provide an extra discount. Aside from referencing these packages, we don't use "Stages."