New Release | Shadow X-FLAP Exhaust Valve Controller Built-in Delete Module | OEM-Compatible Design
2026/03/25 ShadowAs modern European ECUs become increasingly restrictive, exhaust valve modifications often trigger DTC errors or dashboard warnings.
Leveraging decades of automotive electronics expertise since 1999, Shadow introduces the **X-FLAP Exhaust Valve Controller**, featuring a built-in delete module and OEM signal decoding system for a stable, error-free upgrade solution.

Built-in Delete Module|All-in-One Integration
The X-FLAP integrates an OEM signal decoding module directly into the main unit, eliminating the need for external delete devices.
Compatible with both single and dual valve systems, it ensures seamless ECU communication while minimizing DTC and warning light issues.
*After installation, clearing DTC codes is recommended.
Three Control Modes (ON / OFF / NOR)
In NOR mode, the system automatically corrects partial OEM signals to full open, ensuring optimal exhaust flow and sound performance.
*OFF mode should be used under low RPM and low load conditions.

Direct Underbody Installation|Fully Sealed Waterproof Design
Fully sealed construction allows direct mounting under the vehicle chassis without routing cables into the cabin, significantly simplifying installation.
App & Remote Control Integration
Users can freely define startup behavior, providing flexible control across different driving scenarios.
Vehicle Compatibility

UNIVERSAL
Supports major performance models with German-standard 3PIN / 4PIN valve motors.
- BMW M2 / M3 / M4 / M5 / X3M / X5M
- Audi S / RS series
- Volkswagen Golf R
- Porsche 4PIN model
- Toyota GR Supra
- MINI JCW
TL ver.(Mercedes-Benz exclusive)
Specifically tuned for next-generation Mercedes-Benz electronic valve systems.
- AMG A45 (W177)
- AMG C43 / C63 (W206)
- AMG G63 (W463A)
Know you the best
SHADOW will not only be a pronoun of global automotive electronics products in the future, but also a good partner for modified car owners! Let more people experience the pleasure and convenience of modified vehicles through SHADOW's products!
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