Adjustable Dual Port 'Splitter'

Recirculating/Atmospheric Diverter Valve

Designed to work in harmony with your vehicles ECU by allowing trickle recirculation feed back into the intake to allow MAF adjustments as OEM, but also incorporates an atmospheric release trumpet for the desireable 'woosh' sound when changing gear.

The units also feature a full twist - top adjustable rebound spring set and can be figured to work as full atmospheric and full recirculation with the including screw fit blank. Essentially a 3 in 1 unit.

All in all, probably the best valve you can purchase for your 1.8T (and many other engines that accept 25mm units).

Slippery oil coated piston for smooth action and nitrile rubber seals to prevent leaks

Buy Once, Buy Right.

We also include a free blanking cap to give you the choice of the following!

1. Dual Port (out of the box)

2. Full Atmospheric (remove and blank recirculation port)

3. Full Atmospheric (remove and blank trumpet port)

- For all 25mm fitments

- Recirculation and Vent To Atmosphere Action - This gives the 'swoosh' sound on lift off

- All aluminium construction

- Adjustable rebound

-ECU Friendly

- Complete with blanking cap and fitting kit

- Boxed and Brand New 

Fits

AUDI A4 A6 1.8T TURBO 20V

(not Diesel)

It replaces the standard Black Plastic Bosch diverter valve which is prone to failure especially with the current age of the 1.8T.

May fit many other vehicles, this is just an example. 

Qualified Person Installation only. 

No instructions are provided.

About Us  

UK born and bred, Boost Kings originated from the desire to not only make modifying vehicles cheaper but for those mods to remain effective and without compromise.

We source from a selection of manufacturers to keep costs low and quality high. Often we find quality can vary from manufacturer even if the part looks the same, so we personally find the best ones, which is often more expensive from some of the budget kit available. Performance over profit.

We try to respond to emails and questions within 24-48 hours and generally will do between 10am-1pm most days aside from holidays/weekends/show days etc.

Please have anything your purchase from us installed professionally by a licensed specialist/garage etc. We hold no responsibility for any damage to your vehicle or any running issues encountered by installing aftermarket products.

Please drop us a message if you have any questions or simply need a little advice about our products and please read our terms and conditions below before purchase.

Thanks for choosing Boost Kings!