D-Sync Works
VGS NAG3 Tune — 9G-Tronic 9-Speed TCU
VGS NAG3 tuning · 9G-Tronic 9-Speed TCU Available now
Tuning for the Mercedes VGS NAG3 (9G-Tronic 9-Speed TCU) — a specialty controller beyond the engine ECU, delivered through the D-Sync platform and priced separately from the engine packages.
No model list needed — fit is confirmed from your VIN: email it to duke@yd-autogroup.com before ordering.
Includes the TCU OTS Tune. $599 USD is the upgrade price for existing D-Sync OTS customers. Covers one VIN — order by email and include your VIN.
How it works
Delivered through the D-Sync platform: the D-Sync app and D1 Wi-Fi dongle handle the connection to your car.
Pricing & ordering
$799 / $599 USD — license only, covering one VIN. The D1 dongle is not included (flashing needs one — sold separately). The upgrade price is for existing D-Sync OTS customers.
Email your VIN to duke@yd-autogroup.com so we can confirm compatibility for your car before you pay.
14-day returns on unactivated licenses · one VIN per license · free standard shipping to supported regions · checksums corrected automatically on every flash · one-tap revert to stock, anytime
Ordering & shipping
| Before you pay | Email your VIN to duke@yd-autogroup.com — we check your ECU software version first and usually reply within one business day. |
| US & Canada | Online checkout or PayPal; Canadian customers can also pay by Interac e-Transfer. |
| All other countries | Order by email with your VIN; we send a PayPal invoice and PayPal converts to your currency automatically. |
| Shipping | Orders ship the day after they are placed — from our agent in Guangzhou for Mainland China and nearby regions, from Ontario, Canada for everywhere else. We ship worldwide: UPS by default to Europe and North America, EMS to Australia, and SF Express to Mainland China and nearby regions (Hong Kong, Macau, Taiwan, Japan, South Korea and Southeast Asia). For any other region, please email us before ordering. Delivery time depends on your region; standard shipping is free to the regions above — ask for an express upgrade when ordering. |
| Duties | Import duties or taxes, where they apply, are the recipient's responsibility. |
| After payment | Register on d-syncworks.com and tell us the account email — we activate the license on your VIN and send tracking, usually within one business day. |
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