Forge Motorsport blow-off valve for Mini/Peugeot N18

We recommend servicing the valve every 3 years or 20,000 miles (32.187 km), whichever comes first.

The blow-off valve is specifically designed for Mini/Peugeot N18 engines, including Mini Cooper S models from 2011 onwards, Mini JCW Cooper S from 2013 onwards, Mini R58 Coupe from 2012 onwards, and Peugeot 208 GTi from late 2012 onwards, Peugeot 308 GTI and RCZ THP 156 and 200 from 2011 onwards. It is suitable for vehicles with increased boost pressure following an ECU software upgrade, for users who want a pronounced blow-off valve sound, or as a solution to frequent failures of the original valve.

The most common problem with the original solenoid valve is a split diaphragm, which prevents the valve from opening fully or at all. This does not always trigger the engine warning light, as boost pressure may still force the valve open. We have observed many such cases with these valves.

Another problem is the very thin plastic diaphragm retaining ring, which becomes brittle and eventually fails due to heat cycles and oil contamination. The diaphragm consequently no longer seals correctly, causing the same problems as a split diaphragm. With this failure, the valve may fall apart when removed from the turbocharger, and in extreme cases plastic particles may enter the turbocharger and damage it.

Forge Motorsport has developed a solution with improved reliability. The valve uses a piston design without a diaphragm and is made from aluminium. It replaces the original component with a pressure- or vacuum-controlled piston valve while retaining the factory ECU control of valve activation. The spring can be changed for different boost pressure levels, while the solenoid valve is installed with the supplied wiring harness on a plug-and-play basis.

• Made from aircraft-grade aluminium
• No fault codes or engine warning light
• All instructions and installation parts included
• Made in the United Kingdom

The kit includes:

• 1 × FMDVR60A valve
• 1 × wiring harness
• 1 × solenoid valve, bracket and bolts
• 1 × 4 mm diameter vacuum hose, 2,000 mm long
• 1 × aluminium spacer
• 1 × M6 × 30 hex bolt
• 1 × M6 washer
• 1 × M6 self-locking nut
• 1 × reinforced red spring
• 10 × cable ties
• 1 × 5 mm T-piece
• 1 × Forge key ring and sticker

The appearance of the supplied product may differ from the product shown due to the continuous review, updating and improvement of the product range.

Suitable for: Citroën DS3 I (S/S), MINI Mini Clubman I (R55), MINI Mini Convertible II (R57), MINI Mini Countryman I (R60), MINI Mini Coupe I (R58), MINI Mini Paceman I (R61), MINI Mini Roadster I (R59), MINI Mini II (R56), Peugeot 208 I (C), Peugeot 308 I (4B), Peugeot Rcz I (4J).

Compatible vehicles (manufacturer data)

Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.