BenzUnited Parts
M276 Stage 2 Bundle | Catless Downpipes + ECU Tune – C43 C400 C450 E43 E400 E450 (W205 / W213)
M276 Stage 2 Bundle | Catless Downpipes + ECU Tune – C43 C400 C450 E43 E400 E450 (W205 / W213)
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Off-road and competition use only. Not legal for street use or on emissions-controlled vehicles.
Take your W205 C43 AMG to Stage 2 in a single order. This package combines high-flow catless downpipes with our custom remote ECU calibration — strong power gains, sharper throttle response, and a deeper AMG exhaust note, with the car staying refined and reliable for daily driving.
Why buy it as a package?
The calibration is written around the exact downpipes you're getting, so the tune is matched to your hardware from day one instead of paying for a re-flash later. One order, one setup, one point of support.
What's Included
- Catless downpipes in T304 stainless steel, direct bolt-on
- Custom remote ECU calibration with full CEL resolution and multi-map support
- Premium OBD2 interface for easy home flashing
- Detailed installation guide and dedicated post-tune support
Performance
- Stage 2 output: up to 485 hp / 530 lb-ft on premium pump gas
- Significantly faster turbo spool and sharper throttle response
- Deeper, more aggressive AMG exhaust note under load
- Proven on both street and track use
Our Stage 2 C43 against a modified Nissan GT-R:
Choose Your Downpipe Finish
| Finish | Best for |
|---|---|
| Raw Stainless | Classic raw look with excellent durability. Great value and easy to maintain. |
| Ceramic Coated | Strong heat management and a premium finished look. |
| Heat Shielded | Maximum thermal protection and fastest spool. Ideal for track or hot-climate use. |
Use the selector above to choose your finish.
Vehicle Compatibility
| Model | Chassis | Years |
|---|---|---|
| C43 AMG | W205 | 2015–2021 |
| C400 / C450 | W205 | 2015–2016 |
| E43 AMG | W213 | 2016–2018 |
| E400 / E450 | W213 / C238 / A238 | 2016–2020 |
All M276 3.0L BiTurbo V6. Not sure? Send us your VIN and we'll confirm before you order.
Common Questions
How does the remote calibration work?
We guide you through it step by step. You connect the interface and we flash the car remotely — usually under 45 minutes.
Will it throw a check engine light?
No. The calibration is written specifically to resolve the fault codes catless downpipes would otherwise set — that's a large part of why the package exists.
Is daily drivability affected?
No — the car keeps its refined character with improved performance and response.
Is this street legal?
No — intended for off-road and competition use only.
Is there a warranty?
Yes — a 12-month structural warranty on the downpipes, with guaranteed fitment on every model listed above.
Buy With Confidence
- 12-month structural warranty with guaranteed fitment on listed models
- Same-day U.S. shipping with tracking
- Dedicated post-purchase support — the calibration is ours, so support comes from the people who wrote it
- Fitment confirmed before you buy — send your VIN and we'll verify
Confirm fitment or ask a question →
BenzUnited Parts • C43 Stage 2 Package • 12-Month Warranty • Same-Day Shipping
