What You'll Need
HP Tuners RTD4 Device
Plugs into your vehicle's OBD-II port (under the dash, driver's side)
TDN App
Free download from the Apple App Store or Google Play Store
Smartphone or Tablet
iOS or Android with Bluetooth enabled
PPEI Invite Code
Provided by PPEI Tuning — changes weekly, contact us for the current code
Your Vehicle
Must be accessible with ignition available (key turned to the ON position)
Setup Steps
What Happens Next
Once PPEI Tuning receives your read file and info log, we will build your custom tune and push it back to your RTD4 via the TDN app automatically. When your tune is ready, tap the FLASH button, select your vehicle, and tap the tune file. Then tap WRITE VEHICLE to flash your new tune.
Need Help?
If you run into any issues during the setup process, our support team is here to help. Reach out to us by email or phone and we'll get you sorted out.