- CNC machine body and internals
- Tuneable, for different boost pressures
- Serviceable, for lifetime use
- Easy Fit, full step by step installation instructions provided
- Utilising world leading springs for more precise operation and consistency
- Assembled with heat stabilised Viton O rings
- Lubricated with Mobil 1 high temp grease
- Covered by the unique Forge Lifetime Warranty *

This recirculating valve is a direct replacement for the OEM valve but offering a level of reliability that is second to none! The vacuum nipple is position is angled making the upgrade/replacement seamless. We take pride in producing valves that have significant advantages over to original equipment: the body and internals are machined in our workshop in Gloucester, UK. They are then hand polished or anodised black for the stealthy appearance.
If stealthy isn’t your style and you want the infamous dump valve noise, take a look at our atmospheric version: FMDVK04SA
Please note for Porsche 997 Generation 1, x2 FMDVK04S's are required.
*Product demonstrated in the photo above fitted to the turbo features FMDVK04D, the same valve with a top exit vacuum nipple

The OEM valve uses a rubber diaphragm and a plastic housing. Both of these materials, but especially the rubber is prone to failure. The rubber can stiffen and go brittle due to the heat from the engine, resulting in the diaphragm splitting and boost leak.
Our valve uses full billet alloy construction with a piston based internal design, meaning the issues with the OEM can never happen with ours! To give you even more peace of mind, we made the internals of our valve serviceable. We recommend doing these every 3 years or 20,000 miles, whichever comes first. However, if you don’t want to service your valve yourself you can order the kit and ship your valve back to us and we will carry out the service free of charge! Simply contact us to arrange the service!
The OEM valve internals can also fail if you have your vehicle mapped as the rubber diaphragm is not always strong enough to cope with the increased boost pressure. We build our valves with a spring matched to the original pressure of the car but include in the kit a spring strong enough to cope with a stage one remap. If you decide to increase the power even more, you can guarantee the reliability of our valve by using this spring tuning kit!

In the Box
1 x
Shipping Policy
Our Shipping Policy was last updated on 1st January 2025
Interpretation and Definitions
Interpretation
The words of which the initial letter is capitalized have meanings defined under the following conditions. The following definitions shall have the same meaning regardless of whether they appear in singular or in plural.
Definitions
For the purposes of this Disclaimer:
● "Company" (referred to as either "the Company", "We", "Us" or "Our" in this Disclaimer) refers to FAW Motorsport
● "Goods" refers to the items offered for sale on the Service.
● "Orders" means a request by You to purchase Goods from Us.
● "Service" refers to the Website.
● "Website" refers to FAW Motorsport, accessible from WWW.FAWMOTORSPORT.CO.UK
● "You" means the individual accessing the Service, or the company, or other legal entity on behalf of which such individual is accessing or using the Service, as applicable.
Thank you for visiting and shopping at FAW Motorsport. The following terms and conditions constitute our Shipping Policy.
Domestic Shipping Policy
SHIPMENT PROCESSING TIMES
All Orders are processed within 2-3 business days. Orders are not shipped or delivered on weekends or holidays. Special order products will be processed within 2-3 days delivery times will vary and collection may be required for larger items. Collection dates will be confirmed via email or telephone.
If We are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of Your Order, We will contact You via email or telephone.
SHIPPING RATES UK MAINLAND:
Standard: 3-4 business days £6.99
Express Delivery: 1-3 business days £8.99
Large item: 2-5 business days £15.43
Delivery delays can occasionally occur.
Please contact us for shipment outside of Mainland UK
SPECIAL ORDERS POLICY:
1. No Returns:
o Special orders are custom-made or customized to meet your specific requirements and, therefore, cannot be returned under any circumstances.
2. No Cancellations:
o Once a special order is placed, it enters our production process immediately. As a result, cancellations are not permitted. Please review your order carefully before finalizing the purchase.
3. Non-Refundable:
o Payments for special orders are non-refundable. This includes deposits and any other payments made towards the special order.
4. Customer Responsibility:
o It is the customer's responsibility to ensure all specifications and details are correct at the time of placing the order. Any errors or omissions in the order details cannot be amended once the order has been processed.
5. Acceptance of Terms:
o By placing a special order, you acknowledge and agree to the terms outlined in this policy. This ensures that you are fully aware of the non-returnable and non-cancellable nature of special orders.
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation Email once Your Order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.
Customs, Duties and Taxes
FAW Motorsport is not responsible for any customs and taxes applied to Your Order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes)
Damages
FAW Motorsport is not liable for any products damaged or lost during shipping. If You received Your Order damaged, please contact the shipment carrier to file a claim.
Please save all packaging materials and damaged goods before filing a claim.
Contact Us
If you have any questions about this Shipping Policy, You can contact Us:
● By sending us an email: info@FAWMotorsport.co.uk