SKU: 44882282171

Dump Valve Kit for VAG 1.0 TSI/GTI

Sale price$151.65 Regular price$168.50
Save 10%

Pay in installments of $42.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Dump Valve Kit for VAG 1.0 TSI/GTIThis valve kit allows the fitment of a fast response blow off valve on the VAG 1. 0 TSI GTI engine, including the VW UP. This valve has superseded the previous iteration of this valve, FMDV9. As the engine does not have a diverter valve fitted as standard, Forge Motorsport have developed a twin piston dump valve that not only gives you an incredibly loud sound when lifting off the throttle but it also increases the throttle response during gear

This valve kit allows the fitment of a fast response blow off valve on the VAG 1.0 TSI/GTI engine, including the VW UP. This valve has superseded the previous iteration of this valve, FMDV9.

As the engine does not have a diverter valve fitted as standard, Forge Motorsport have developed a twin piston dump valve that not only gives you an incredibly loud sound when lifting off the throttle but it also increases the throttle response during gear changes by reducing turbo lag.

 

 

It is designed to help the turbocharger maintain its rotational speed ready for when you accelerate, as well as prolonging the life of your turbo.

 

Due to the exposed position of the OEM boost pipe and the nature of an engines heat cycle, the plastic the OEM pipe is made from can deteriorate over time becoming brittle and susceptible to boost leaks. This kit totally replaces this plastic pipe from turbo to manifold with a silicon hose (available in a choice of colours), and everything else you need to install the valve is included in the kit together with full instructions.

  • Anodised CNC machined billet couplers and components along with a tuneable CNC machined twin piston Forge Motorsport valve.
  • Custom colours are available but will incur a 50% none refundable deposit and a lead time of 8-10 weeks.
  • Unlike other valves on the market the Forge valve will not bring on any check engine lights. (EML) 
  • The Forge silicone hoses in this kit have been designed to include an expensive inner liner of modified silicone known as Fluorosilicone. This ensures the colour of the silicon hose stays bright and vibrant and unlike our competitors will not deteriorate over time.
  • Lifetime warranty.

Please note that the 2021 Engine may have some differences due to the map sensor and turbo charger coupler difference, please study the pictures below, if your map sensor and screw type coupler look like this pictured below, FMDV9 and FMDV18 are not compatible. 

In The Box:

1x Atmospheric Dump Valve
1x Boost Tap / Take Off (Including Cork Gasket and Screws)
1x Throttle Body Coupler with Dump Valve Thread
1 x Uprated Spring (To be used when the engine is mapped)
1x Hose Coupler
1x Threaded Blanking Plug
1x Silicone Hose (Red, Blue or Black)
3x Hose Clamps
2x Bolts
1x Roll of Vacuum Tubing
1x Wiring Loom Extension

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 44882282171

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Dolphin
Waukegan, US
★★★★★ 5
Exelent
all the liqui moly excellent good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
J
Verified Purchase
Jack McCord
Fort Morgan, US
★★★★★ 5
IT WORKED!
I tried 4 bottles of two other products. They did not work. One bottle of Moly (in 1/2 tank of gas) fixed the problem after driving 100 miles. GREAT PRODUCT!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
R
Verified Purchase
RichOne
Lexington, US
★★★★★ 5
Speed Fast
Love love all these products my engine runs like a Porsche I’m serious I have a 2000 Honda civic dx as well as 1996 Chevy Tahoe LT I love my vehicles especially when I pour this fabulous liquid into my vehicles five stars
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 20, 2025
P
Verified Purchase
1401printer
Lowell, US
★★★★★ 5
Great product
Great product easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
R
Verified Purchase
ron satallante
Carnegie, US
★★★★★ 4
Better
It does quite lifters a little, not as much as I would like for my 4 cyclinder turbo engine
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2024

recommand products