Stage II+ Supercharger Pulley Kit
APR B8 3.0 TFSI
Supercharger Coolant Performance System
APR is pleased to present a completely reengineered
supercharger Coolant Performance System (CPS) for the
Audi B8 3.0 TFSI. Through extensive
motorsport testing in GRAND-AM Road
Racing, APRs Engineering Team discovered the
OEM supercharger cooling system was inadequate at
higher boost pressures and power levels and therefore developed the
APR CPS to improve both performance and
reliability.
Performance
Compressing incoming air such as all superchargers and
turbochargers do to deliver increased volumetric efficiency and
thus more power at every point of combustion creates heat that must
be properly cooled again prior to entering the cylinders. Most all
automotive enthusiasts have experienced this with even normally
aspirated cars whereas in the cool winter days our cars clearly
perform better than in the hot summer months. When increasing
engine power or during spirited driving, and especially during
brutal motorsport racing, the OEM supercharger cooling
system quickly becomes taxed, creating a loss of engine
performance.
Reliability
Heat is a major concern regarding the health of your engine and
APR pays close attention to reliability. The engines
ECU takes many steps to reduce power output when
temperatures rise, however it can only go so far. By reengineering
the supercharger cooling system, APR is able to not
only keep performance consistent but also ensure your engine is
more reliable by having done so.
APR 3.0 TFSI Supercharger
Pulley Upgrade
APR is pleased to present the worlds first
Supercharger Pulley and corresponding ECU Upgrade for
the 3.0 TFSI. Without recalibrating the
ECU found in Audis latest line of supercharged direct
injected vehicles, pulley upgrades offer no advantage, as the
supercharger will simply bypass boost pressure. With APRs ability
to expertly recalibrate the 3.0 TFSI Engine Control
Unit, we are able to develop new hardware and calibrate the
ECU to work properly as if intended by the
factory.
Many enthusiasts coming from Audis history of turbocharged
vehicles expected massive increases in torque, at lower RPMs,
simply by adding an ECU Upgrade. Unlike turbochargers,
roots style superchargers are positive displacement meaning they
provide a fixed amount of air flow based on engine speed. On the
3.0TFSI Audi chose to use a bypass valve that bleeds off boost
pressure when requested. Keeping the valve almost completely shut
at lower RPMS allows them to make respectable torque,
and, opening the valve at higher RPMs allows them to keep
horsepower within their marketing goal. Consequently, the
APR Stage I ECU upgrade provides a
relatively low increase in torque but an exceptional increase in
power. For those demanding more torque, The APR
Supercharger Pulley Upgrade is the answer. Spinning the
supercharger faster increases air flow and effectively doubles the
low-end gains of Stage I. The gain in torque is felt immediately,
but the results are present from beginning to end adding up to
80ft-lbs and 108 horsepower at all four wheels!
APR has chosen not to cut any corners and as such
each APR Supercharger Pulley Upgrade Kit includes a
new supercharger belt. Furthermore, all existing APR
Stage I ECU Upgrade customers are entitled to a free
APR Stage II+ ECU Upgrade
required for proper functionality. Finally, every APR
Pulley is E-Coated black for an OEM appearance.
