The mountune uprated turbo re-circulating valve is a direct replacement for the OE component.
Machined from solid aluminium with a piston-type design (compared to the OE diaphragm) the more robust design and material are suitable for vehicles in advanced state of tune.
A diaphragm-design recirculation valve could function less effectively when the pressure differential across the turbocharger compressor housing is increased above the original operating conditions. This can cause the valve to open prematurely, leading to possible turbocharger damage due to increased turbo shaft speed.
mountune's engineers have designed an uprated, more robust valve, that features a metal piston and rubber sealing system. This design also features an uprated spring that improves sealing pressure, which allows the valve to remain closed under high pressure conditions.
This product is compatible with mk2 Focus RS, mk2 Focus ST and mk3 Focus ST.
If you are going to up your ST power from stock then up grading this valve is a must. The standard recirculating valve isn’t up to the job and can fail,leading to turbo damage. This Mountune valve is league’s ahead, extremely well engineered from high grade aluminium. Since fitting the valve I have noticed improved throttle response,smoother power delivery and better boost noises. I would recommend this valve to any ST owner,5 stars.
Good quality, easy to fit, holds boost better.
direct fit.. easy installation. 15 mins far better then the factory fitted type. i would strongly recommend anyone to change to this product. especially after or before a re map ..