Recirculation Valves For The BMW N54 twin turbo
motor 135 335 535 models
Developed specifically for
BMW’s all-new N54 twin turbo motor, as found in the BMW 135,335 and 535
models, Forge Motorsport adds another replacement valve application to
our already extensive vehicle specific and universal valve lineup. While
virtually identical in operation to the Bosch style valves as used from
the factory on many other turbocharged applications, primarily
Volkswagen and Audi, BMW has utilized a very different type of valve
connection mechanism that makes their product and our replacement
components very unique. Starting with the world’s best selling direct
replacement Bosch style valve, our own 007P piston-based design, we have
revised virtually every single component of the valve body, (except the
internal piston), in order to retain BMW’s unique connection mechanism
yet offer improved functionality in every other possible way. The entire
valve assembly is precision CNC machined from T6-6061 billet aluminum
alloy on our very own Mazak CNC milling machines. Again, the valve is an
aluminum piston based design, offering significantly improved
reliability over the failure prone OEM diaphragm valves, yet with no
change to valve response time. We utilize ultra high temperature Viton
brand silicone o-rings for sealing and Mobil1 fully synthetic bearing
grease for lubrication. The valves are fully tunable for both boost
holding capacity and response by way of proprietary interchangeable
springs and shims (washers to marginally adjust preload). By utilizing
this method of valve tuning with multiple custom spring rates, the
valves will retain the maximum range of piston travel and flow volume
regardless of which spring rate is used. Valves with a singular spring
requiring that adjustments be made by continually adding preload will
suffer from decreased piston or diaphragm travel as the spring tension
is increased. Though these types of valves may hold high boost levels
under load, they will actually suffer from limited flow volume at
throttle lift when the valve vents. The hoses included in the kit are a
custom made multi-layer fabric reinforced flexible silicone hose that
are designed to allow compatibility with the stock airbox and charge
piping setup without any permanent modification being required to adapt
our replacement valves. Even the included hose clamps are overkill. They
are specifically designed for use with silicone hoses, utilizing a
beveled band edge and a pressed in drive mechanism rather than
perforated. They are even approved by NATO for international military
use. All told, this direct replacement valve kit will be suitable for a
bone stock car to one that is heavily modified. They can be installed on
the car right on the showroom floor and they will last well past having
upgraded your intake, exhaust, and ECU software. They are capable of
handling an infinitely wider range of boost pressure, more reliably,
than the OEM valves, and they carry an unlimited lifetime warranty and
money back guarantee.
