Already have a 337Motorsports tune? Keep your performance optimized as your build evolves. The 337 Tune Refresh is designed for existing 337Motorsports tuning customers who have made modifications to their machine and need their current calibration updated. Whether you've installed larger tires, a new clutch kit, exhaust system, intake, or other supported performance upgrades, we'll revise your existing tune to match your new setup. Every Tune Refresh is built using your previously purchased calibration, allowing us to update your tune without starting from scratch. Recommended For Larger tire upgrades Clutch kit installations Intake modifications Exhaust upgrades Gear reduction changes Fuel type changes Other supported performance modifications What's Included Updated ECU calibration based on your new setup Review of your current modifications Secure file backup Digital file delivery Post-update support How It Works Purchase your 337 Tune Refresh. Complete the Tune Builder with your updated vehicle information. Upload your current ECU read file (if required) and list your new modifications. We'll review your setup and update your existing calibration. Receive your revised tune digitally. Eligibility The 337 Tune Refresh is available only for customers with an existing 337Motorsports tune. If your ECU has been tuned by another company or you're purchasing a tune for the first time, please select one of our Custom ECU Tune packages instead. Standard Turnaround 1–3 Business Days after receiving all required information and files. Not sure if your modifications require a Tune Refresh? Contact 337Motorsports before purchasing, and we'll be happy to point you in the right direction. Minor Refresh (tire size, gear reduction, fuel change) – $99 Performance Refresh (intake, exhaust, clutch, multiple bolt-ons) – $149 Elite Refresh (major build changes) – $199+
