Delivered in 2-3 Business Days
Fast UK Delivery on all Orders, please see delivery information.
SKU: FMDV18-BLU
Eliminate turbo lag and add a crisp, loud atmospheric release sound to your VAG 1.0 TSI or VW Up GTI using Forge's premium twin-piston valve kit.
Fast UK Delivery on all Orders, please see delivery information.
All returns must be postmarked within fourteen (14) days of the purchase date. All returned items must be in new and unused condition, with all original tags and labels attached.
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The compact, energetic VAG 1.0 TSI three-cylinder engine family delivers surprisingly punchy performance but entirely lacks a standard electronic or mechanical diverter valve. To bypass this limitation, Forge Motorsport engineered an incredibly robust twin-piston atmospheric dump valve kit. This upgrade delivers a satisfyingly loud performance sound upon lifting off the throttle, improves intermediate throttle response between shifts, and dramatically minimizes turbo lag by helping the turbocharger maintain optimal compressor speed.

This premium hardware conversion kit includes an atmospheric valve, custom boost tap with cork gasket sealing interfaces, extended wiring loom lengths, and all required vacuum routing components. The main silicone induction hose can be configured across a choice of primary finishes, including Red, Blue, or Black, allowing for seamless visual integration with standard engine bays.
CRITICAL COMPATIBILITY NOTE: This kit is intended for 1.0 TSI models with the airbox positioned toward the front of the engine bay. Additionally, if your factory inlet pipe features an integrated extra breather spout, you must select the matching extra breather adapter option. **Not compatible with 2021+ screw-type turbo couplers; see FMDV9 layout rules.**
To safely unpack and mount this multi-piece mechanical conversion kit at home, click the instructions link below:
Download Installation Instructions
Ensure correct boost sourcing by letting our professional technicians fit this complete twin-piston kit at our Leeds facility.
Book Installation at MGM Leeds

This premium performance package is designed to fit the following 1.0 TSI three-cylinder vehicles:
| Vehicle Application | Model Year Constraints |
|---|---|
| VW Up! GTI / VW Up! 1.0 TSI | 2016 - 2020 (Pre-facelift Intake Layouts Only) |
| SEAT Ibiza (KJ Chassis) | 2017 - 2021 1.0 TSI Front-Airbox Models |
| Skoda Fabia (NJ Chassis) | 1.0 TSI Three-Cylinder Engines |