DTH exhaust system with flaps DTH1095 for Toyota GT86 & Subaru BRZ

DTH1095 is a high-end, valve-controlled (flap) exhaust system manufactured by DTH Production in Germany. It is specifically designed for the Toyota GT86 and Subaru BRZ (First Generation / ZN6 & ZC6) as well as the newer GR86 (Second Generation / ZN8).

DTH is widely regarded for creating one of the few ECE-approved (road-legal) valvetronic systems available for these platforms, balancing aggressive sound with strict European noise regulations.

Technical Specifications

• Part Number: DTH1095 (Standard configuration)

• Pipe Diameter: 63.5mm (2.5 inches) throughout for optimized exhaust flow.

• Material: High-grade T304 Stainless Steel, TIG-welded for durability.

• Valve System: Dual-flap (Twin-valve) vacuum-controlled system.

• Approval: ECE-approved / TÜV-certified (road-legal in the EU).

Key Features

• Dynamic Flap Control: The system includes a proprietary control unit that operates the flaps based on engine speed and gear selection.

  • Quiet Mode: Flaps closed for a refined, drone-free commute.

  • Track/Sport Mode: Flaps open to unleash the signature flat-four boxer “growl” without the restrictions of the factory mufflers.

• Modular Tailpipes: The system often allows for interchangeable exhaust tips (Carbon Fiber, Brushed Stainless, or Burned Titanium) to match the car’s aesthetic.

• Performance Gains: Due to the 63.5mm diameter and straight-through design when valves are open, it typically offers a noticeable improvement in throttle response and a slight increase in peak horsepower (approx. 5–8 hp depending on other mods).

Installation & Compatibility

• Fitment: Designed as a direct “bolt-on” replacement for the factory cat-back system. It connects directly to the OEM front pipe or aftermarket overpipes.

• Control Integration: On some versions, the flap control can be integrated into the car’s factory buttons (like a double-tap on the ESP button or switching to “Track Mode”) to toggle the exhaust sound.

• Drone Management: DTH uses internal resonators to ensure that even when the valves are open, the “booming” drone typically found in 4-cylinder exhausts is minimized during highway cruising.