Custom Tuning FAQ

If you've added performance parts like an intake, exhaust, supercharger, or nitrous, your factory tune won't keep up. A custom tune optimizes fueling, timing, and drivability for your exact setup, helping you make more power safely and reliably.

Most tuners offer free standard revisions for a limited time. Here's how some of our top tuners handle it:

• Lund Racing - 6 months (then $150 for revisions)
• Palm Beach Dyno - 6 months (new tune required after)
• Shoemaker Performance - 60 days (new tune required after)
• Ortiz Performance - 60 days ($50 for revisions after)
• Oz Tuning - 90 days ($25 for revisions after)
• 5 Star Tuning - Revisions not included ($65 for retune)

It depends on the dealership. Some will flag your ECU as modified even if you return it to stock. Others may be more lenient. Always check with your service advisor before tuning.

The best tuning device depends on your platform, tuner preference, and desired features:

• Lethal Performance RTD4 - Our HPTuners Bluetooth-enabled flash tool for 2024+ Fords. Full TDN support, simple flashing with your phone, and real-time datalogging. View RTD4
• SCT X4 & BDX - Ideal for 2011-2017 Mustangs and 2021+ F-150s
• Lund Racing LRX - Ford-only tuner with mountable display
• Shoemaker AVID - User-friendly display unit for Shoemaker tunes

Yes, as long as it's not locked to another vehicle and your tuner supports that device type. Be sure to confirm with your tuner before purchasing a tune.

Yes. All supported devices will automatically save a copy of your factory tune before flashing a new one. This lets you revert to stock at any time.

Each tuning device includes a "Return to Stock" function. You'll find the option in the main menu. Refer to the guides below for step-by-step instructions:

• SCT X4
• SCT BDX
• HP Tuners RTD/RTD+
• TDN iOS / Android

Use the tuner's software to check for updates:

• SCT: Download Device Updater from SCT's website
• HP Tuners: Use VCM Suite or TDN mobile app
• LRX and AVID: Use provided USB update software

Remote tuning is the process of sending datalogs and receiving updated tune files from your tuner via email or through the TDN app. You'll perform pulls or drive cycles, log the data, and send it back for revision.

The Tune Delivery Network (TDN) by HP Tuners is a mobile platform that connects you with your tuner. You can receive tunes, send datalogs, scan for codes, and more, all from your phone.

To connect with a tuner in the TDN app, you'll need their unique invite code. Enter it in the app to gain access to tune file transfers and logs.

• Lund Racing: Sent after you submit your tuning form
• Palm Beach Dyno: YPJS-6498
• Shoemaker Performance: CCGH-7949
• Oz Tuning: HDLT-8041

*Codes may vary based on order or tuner workflow

No. All tuners we work with adhere to EPA guidelines. That means they will not disable emissions-related components or turn off warning lights related to them.

If you change major parts like injectors, throttle bodies, or add boost, you'll likely need a new tune. Minor bolt-ons may qualify for a revision, check with your tuner.

Most tuners send your initial tune within 1-3 business days after receiving your completed tuning form. Delays may occur if the form is incomplete or you're slow to reply to emails.

Always include your full mod list, fuel type (octane or E85), driving style (street, track, drag), and any known mechanical issues. The more info your tuner has, the better.

Yes, but you may need to reset or unlock your device, and you might require additional HP Tuners credits or a new license. Make sure your device is compatible with your new tuner.

No, but it's recommended, especially for forced induction or high horsepower builds. A wideband lets you monitor air/fuel ratios accurately and can help with datalogging.

Yes, if you're using the RTD4 or any device that works with the HP Tuners TDN app. Devices like the SCT X4 or BDX require a laptop and LiveLink software for datalogging.

You must use the exact fuel type the tune was built for: 91, 93, or E85. Using the wrong fuel can cause serious performance issues or damage.