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Stage III Intake
The APR kit starts with a Carbonio derived carbon fiber intake which takes
air in from the fenderwell of the car. This helps the car by allowing the engine
to continuously have a fresh supply of cold intake air. |
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MAF Housing
Since the stock FSI MAF is integrated into the factory airbox, APR developed
a new housing that is sized according to engine displacement and maximum power
output. The new cast housing allows the proper metering of the additional
airflow and to minimize pressure losses. The cast aluminum housing is CNC
machined to exacting tolerances and powder-coated to inhibit corrosion. A
honeycomb style flow straightener is also added to prevent the MAF from seeing
erroneous signals. |
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Turbo Compressor Inlet Hose
APR uses a reinforced silicone hose to route the inlet air from the MAF
housing into the compressor inlet of the turbocharger. This hose also has
provisions for other connections, such as the stock crankcase vent hoses and the
APR diverter valve adaptor. |
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APR Diverter Valve Adaptor
APR includes a billet CNC adaptor that allows the stock diverter valve to be
reused with the APR compressor inlet hose. |
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Honeywell/Garrett Turbocharger
Representing the latest in turbocharger technology, a Garrett
GT2871R Ballistic series turbocharger is the only choice for this premium
turbocharger system. APR is unique in that we deal directly with Garrett
turbochargers rather than buying turbochargers through turbocharger supply
houses. Our engineering-house distributor status with Garrett turbochargers
means that we receive assistance from the manufacturer on technical issues and
work with Garrett engineers on specifying the optimal turbocharger for each
application. |
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APR Oil/Coolant Lines
All APR oil and coolant feed and drain lines for the turbocharger are made to
higher than OEM standards. As an example, the oil drain line (pictured) includes
a braided stainless line with pressure crimped fittings, billet adaptors for the
turbo and oil pan, new OEM gaskets, and stainless hardware. |
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Compressor Outlet Hose
This silicone hose directs air from the compressor outlet of the turbocharger
to the cast APR compressor outlet pipe. The APR diverter valve adaptor also
connects to this hose, as well a boost signal line for the N75 boost control
valve. |
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Compressor Outlet Pipe
Also known by some as a "pancake pipe", this cast piece bolts to the
passenger side of the engine and transfers pressurized air from the turbocharger
compressor outlet hose to the intercooler inlet hose. |
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APR Intercooler (OPTIONAL)
Keeping low intake charge temparatures is essential to maintaining powerful
and safe operation of the APR Stage III kit. The APR FSI Intercooler is a
perfect OEM intercooler replacement with an intercooler core size almost three
times the size of the original unit. This intercooler is so efficent, that it
performs incredibly even in the constant acceleration seen on a road course. For
more information about the intercooler, see the APR FSI Intercooler page. |
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High Pressure FSI Fuel Pump
The stock high pressure pump is incapable of pumping a high enough
volume of fuel to support the FSI engine with even moderate mods, much less a
large turbo kit. To rectify this, APR has developed a higher flowing fuel pump
that eliminates this being a problem. For more information about this pump, see
the FSI Fuel Pump page. |
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APR FSI Fuel Injectors
APR spent many hard hours taking FSI injectors (which already flow more than
the stock ones) and then developing a process to modify them to flow even more.
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Exhaust Manifold
The Stage III exhaust manifold is investment cast out of Inconel, a
high-temperature nickel alloy. The manifold was designed in CAD and optimized
using computational fluid dynamics (CFD) software. What this means to the end
user is the ultimate in performance and reliability. |
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Cast Exhaust Downturn
After the exhaust gases have left the turbocharger turbine, they flow into
this stainless steel piece that directs the exhaust gases down, towards the
underside of the car into the supplied exhaust downpipe. |
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APR Exhaust Downpipe
From the cast APR exhaust downturn, the exhaust begins its travel out of the
car through the three inch downpipe that is included with the Stage III
kit. |