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M276 ECU Tune — 3.0T V6 Biturbo

M276 Stage 1 / Stage 2 OTS tune · 3.0T V6 Biturbo · flashed from your phone Available now

Stage 1 and Stage 2 OTS tunes for the Mercedes M276 3.0T V6 Biturbo engine family. Each supported car below links to its own page with exact stock, Stage 1 and Stage 2 figures.

CarChassisYearsStockStage 1Stage 2
AMG C 43W2052016–2021380 hp / 520 Nm450 hp / 600 Nm480 hp / 650 Nm
AMG E 43W2132016–2018396 hp / 520 Nm450 hp / 600 Nm480 hp / 650 Nm
AMG GLC 43X253 / C2532017–2023380 hp / 520 Nm450 hp / 600 Nm480 hp / 650 Nm
AMG GLE 43W166 / C2922015–2019396 hp / 520 Nm450 hp / 600 Nm480 hp / 650 Nm
AMG SLC 43R1722017–2020380 hp / 520 Nm450 hp / 600 Nm480 hp / 650 Nm
C 400 / C 450W205 / S205 / C205 / A2052013–2021328 hp / 480 Nm450 hp / 600 Nm480 hp / 650 Nm
E 400 *W213 / C238 / A238 / W212 / C207 / A2072013–2018328 hp / 480 Nm450 hp / 600 Nm480 hp / 650 Nm
E 450W213 / C238 / A238 / S2132018–2020362 hp / 500 Nm450 hp / 600 Nm480 hp / 650 Nm
CLS 400 *C218 / X2182014–2018TBA450 hp / 600 Nm480 hp / 650 Nm
SL 400 / SL 450R2312014–2020TBA450 hp / 600 Nm480 hp / 650 Nm
S 450 / 400 / 320 **W2222014–2020TBA450 hp / 600 Nm480 hp / 650 Nm
GLE 400 / GLE 450 / ML 400W166 / C2922015–2018TBA450 hp / 600 Nm480 hp / 650 Nm
GL / GLS 400 / 450X1662015–2019TBA450 hp / 600 Nm480 hp / 650 Nm

* Also supports the Japan-market 3.5T M276 · ** Covers all W222-chassis cars powered by the M276 3.0T Biturbo engine

All gains validated on real cars. Factory safety parameters preserved. · AMG 43-series $839 · non-AMG 400 / 450 models $799.

How flashing works

Every tune is flashed over the OBD port from your phone: plug in the D-Sync D1 Wi-Fi dongle, open the D-Sync app, pick Stage 1 or Stage 2, and flash. No laptop, no bench, no shipping your ECU. Your factory calibration is saved automatically — revert to stock with one tap, anytime.

Stage 1 vs Stage 2 — what each needs

Stage 1 runs entirely on factory hardware — no supporting mods required — and also supports cars with an upgraded intake and improved cooling. Stage 2 requires a high-flow exhaust system; an upgraded intake and improved cooling are recommended alongside it. Each stage ships as two files calibrated separately for AKI 91 and AKI 93 fuel, plus a Stage 0 factory-power baseline — five OTS files per car, matched to your ECU software version after VIN verification in the app. European / Asian fuel grades: 95 RON → use the AKI 91 file; 98 / 100 RON → the AKI 93 file. Neither stage needs a transmission (TCU) tune — both are calibrated to run with the factory TCU.

Included with the OTS Mappack

DTC management during flash — select fault codes to manage right in the app before flashing (intended for closed-course use; vehicles on public roads must comply with local emissions regulations). Exhaust Burble Tuner (AMG models; non-AMG models are being added step by step, the S 560 / M176 already has it) — adjustable pops & bangs with 13 in-app controls, included at no extra cost with every OTS Mappack purchase. Live data logging is part of the Flash & Log license. Vehicle coding functions are free for OTS customers.

What's in the package

What you need: a phone with the D-Sync app and access to the car's OBD port.

Pricing & ordering

$799 / $839 USD — includes the license and the D-Sync D1 Wi-Fi dongle, covering one VIN. Free standard shipping to North America, most of Europe, Australia and China & nearby regions.

Buy Now — US & CanadaOrder 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 most regions · checksums corrected automatically on every flash · one-tap revert to stock, anytime

Ordering & shipping

Before you payEmail your VIN to duke@yd-autogroup.com — we check your ECU software version first and usually reply within one business day.
US & CanadaOnline checkout or PayPal; Canadian customers can also pay by Interac e-Transfer.
All other countriesOrder by email with your VIN; we send a PayPal invoice and PayPal converts to your currency automatically.
ShippingOrders 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 North America and Europe, EMS to Australia, and SF Express to Mainland China and nearby regions (Hong Kong, Macau, Taiwan, Japan, South Korea and Southeast Asia). Eastern Europe and the Balkans (Poland, the Baltic states, Czechia, Slovakia, Hungary, Romania, Bulgaria, Croatia, Slovenia, Serbia, Bosnia and Herzegovina, Montenegro, North Macedonia and Albania) ship by EMS or UPS with shipping paid by the customer — email us first for express service. For any other region, please email us before ordering. Delivery time depends on your region. Standard shipping is free to North America, Europe (except Eastern Europe and the Balkans), Australia and Mainland China & nearby regions. Ask for an express upgrade when ordering.
DutiesImport duties or taxes, where they apply, are the recipient's responsibility.
After paymentRegister 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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All supported cars · Interactive catalog · About D-Sync Works