GFB T9025 Respons TMS Diverter Valve (25 mm) for VW/Audi 1.8 T Engines

Regular price: $320.85
Regular price: ~~$356.50~~
Sale price: $320.85

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Product Specification:

SKU:GFBT9025

MPN: T9025

UPC: 9328022000862

Weight: 1.4 lb

Inventory: 2

Type: Blow Off Valves

Vehicle Fitment

Universal Bosch-style 25 mm inlet/outlet electronic diverter valve
Common VW/Audi 1.8 T turbo engines (e.g., Audi A4 B5/B6 1995-2005, A3 8L, TT 8N)
Also suits other makes with Bosch 25 mm DV (Ford, Mazda, etc.) when correctly oriented
Installation note: valve must be installed rotated 180° opposite OEM DV

Features

TMS (Turbo Management System) for 30% faster boost recovery vs stock
Patented adjustable venting-bias ring (100% recirc to 100% atmo)
Progressive, pilot-controlled piston operation for smooth response
Dual-port design prevents compressor surge while holding boost
Direct bolt-on, no tuning or ECU modifications needed
Precision CNC-machined aluminium body with anodised finish
ISO 9001-certified manufacturing in Australia
Handles boost pressures of 100 psi+ without leakage

Specifications

Inlet/outlet diameter: 25 mm Bosch-style
Material: 6061-T6 aluminium; black anodised
Vent bias ring externally adjustable; no cap removal needed
Boost holding: 100 psi+ tested in lab conditions
Weight: ~0.5 kg; compact universal form-factor
Required installation: rotate valve 180° for VW/Audi Bosch DV

Included Components

1x T9025 Respons TMS valve assembly (25 mm)
1x vent-bias adjustment ring installed
1x universal clamp for 25 mm pipe
1x silicone vacuum hose
1x installation instruction sheet (PDF available)

Product Description

The GFB T9025 Respons TMS diverter valve is a high-performance replacement for OEM Bosch-style 25 mm electronic diverter valves, popular in VW and Audi 1.8 T turbocharged engines (like the A4 B5/B6, A3 8L, TT 8N). It features GFB's innovative Turbo Management System for up to 30% faster boost recovery during gear changes, and a patented venting-bias ring to smoothly control the resonance from quiet recirc to aggressive atmo venting - all without risking stalling or triggering MAF/ECU issues:contentReference[oaicite:10]{index=10}.

Crafted from CNC-machined 6061 aluminium and anodised for durability, this valve handles 100+ psi boost reliably. Installation is quick: rotate the valve 180° (opposite OEM Bosch orientation) to ensure optimal flow, clamp it to the factory 25 mm piping, plug in the vacuum hose, and go. Perfect for enthusiasts seeking improved throttle response, boost holding, and the option for that classic blow-off sound, the T9025 offers performance gains without complication.