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.

Model list coming soon — email duke@yd-autogroup.com to ask about your car.

All gains validated on real cars. Factory safety parameters preserved. · 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. 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.

Pricing & ordering

$799 / $599 USD — includes the license and the D-Sync D1 Wi-Fi dongle, covering one VIN. Free standard shipping to all supported regions.

Order by Email

Email your VIN to duke@yd-autogroup.com so we can confirm tune availability for your exact ECU version 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.
EU / UK / Australia / other supported regions	Order by email with your VIN; we send a PayPal invoice and PayPal converts to your currency automatically.
Shipping	Ships from Ontario, Canada by UPS / Canada Post. Standard shipping is free to supported regions; 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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