Control Components
Control Components
GReddy/TRUST-designed turbochargers are the heart of our renown
systems. Now, meet the "brains."
At GReddy, it's not enough to "manage" the myriad
functions of today's advanced engines. We know you want total
control. That's why we are the undisputed leaders in marrying the
best in electronics and computer science to automotive
applications
The focus of our research and development– Hondas, Integras,
Mazdas, Toyotas, Lexuses, Nissans and Mitsubishis–are among
the world's finest automobiles. Emission levels, reliability,
smoothness and fuel economy are optimized, according to the
factory's definitions, by onboard control systems.
Our engineers build on the stock components and extend
capabilities in truly innovative ways. Here's a rundown of how
the Turbo Timer, Rebic III Simulator, PRofec and new PRofec B
fit into your performance upgrade plan, logically and affordably.
If you have a turbocharger-whether it's
factory, added or upgraded–the Turbo Timer should be
included in your budget under the category: "peace of
mind." The Turbo Timer allows you to leave your vehicle
while the timer leaves your engine running anywhere from 10
seconds to 9.99 minutes. The gradual cool-down prevents bearing
damage that can occur when a turbocharged engine is shutdown
abruptly after normal driving. ("Spirited" driving and
its more extreme temperatures would be even worse.)
The turbo's bearings rely on a generous supply of clean engine
oil. All oil pressure is lost when the engine isn't running. With
temperatures of about 250F/106C-and at the turbine shaft,
300-350C (540-630F)–a hard, destructive varnish or
"coke" can form on the bearings or seals. With the
one-quarter DIN-sized GReddy Turbo Timer tucked in an unobtrusive
location, you can leave and lock your car with confidence. No
"baby-sitting" your prized machine or being late to
work or a movie.
When a turbocharger and intercooler deliver
more air to the engine, more fuel is needed to extract the
potential power-especially in street/strip/race applications. The
Rebic III is an auxiliary fuel-injector controller that works
independent of the factory electronic control unit. GReddy's
"black box" can be used in any forced-induction setup
to supply more fuel under high boost. The Rebic III maintains
safe air/fuel ratios, while supplying up to eight additional
injectors. Its modular designs lets you use the Rebic III with
other GReddy control devices. We've found, to our delight, that
enthusiasts rave about the Rebic III's graphical, dynamic
user-interface and how it adds a "cool" factor to even
the best interiors. Who says engineering has to be boring?
The Simulator is designed for the serious enthusiast who wants more control over the secondary fuel map. Features include:
The PRofec is the ultimate proactive,
aggressive boost control for turbochargers and available at a
reasonable price only from GReddy's authorized dealers.
The PRofec is an electronic boost controller that employs fuzzy
logic. Its powerful CPU allows your engine to be at the razor
edge of performance more often, safely. In its learn mode, our
hardware and software process data from the vehicle and, using
this more intelligent, interactive "mapping," the
PRofec's stepping motor not only controls, but anticipates boost
spikes.
Unlike most computers that only operate in "black and
white" (1's and 0's), fuzzy logic can "think" in
shades of gray and "learn" direct answers to problems.
Where normal computers stair-step in "yes" and
"no's," fuzzy logic can go straight to the answer.
In recent years, fuzzy logic has gained popularity on everything
from the famous bullet trains in Japan to washing machines and
thermostats. The latter is a great example when we look at fuzzy
logic's application in the PRofec. Standard on/off thermostats
will turn on the heating or air conditioning when the air reaches
the set temperature. Fuzzy logic thermostats turn on the A/C or
heat a little as the temperature approaches the specified value.
When it comes to boost control, standard electronic controls will
open the wastegate at a specified boost pressure. In some cases,
the desired boost can be reached too fast for the controller to
act, and harmful overboost can occur. Fuzzy logic, on the other
hand, actually learns how fast your engine approaches maximum
safe boost and starts to open the wastegate at the appropriate
time so you never get into an overboost condition. Fine-tuning
your vehicle to the highest safe boost setting eliminates the
need for a wide safety margin to compensate for potential
overboost.
GReddy has taken all the features of fuzzy logic and packaged
them in an elegant, compact unit: the PRofec. It's outfitted with
a high-speed processor, a warning alarm, LED display and an
overtake boost system as developed on turbocharged Formula 1
cars. Naturally, we include a link that will allow the PRofec's
use with future GReddy electronic control technology.
Overtake boost will let you run a specified higher boost pressure
for better economy. When you need to accelerate for passing, the
PRofec allows maximum boost for a period you control, then
returns to the lower boost level automatically. This provides the
best engine and turbo life without sacrificing on-demand
performance.
See the online PRofec
operation guide
The PRofec B is our answer to a number of
tuners and enthusiasts who wanted a GReddy boost controller that
was less expensive–and demanding–than the PRofec. The
fuzzy-logic PRofec is still the ultimate controller but its
programming requires patience–and consistent engine
parameters. The engine can't have occasional leaks or suffer
"boost creep." The PRofec B is a great choice for
street cars and those equipped with sequential turbochargers.
It's not recommended for large-displacement engines with
small turbos or quick-response turbos.
Features of the PRofec B:
Finally, we designed the PRofec B to be
affordable because we know our customers love quality and
value. The suggested list price is $420.00.
Power without control isn't performance. It's
dangerous.
The wastegate is a critical component of GReddy's total power
system. Our precision, premium-crafted wastegates help ensure
maximum power, flexibility, responsiveness and safety.
Modern turbocharging systems work. Thousands of
cars, trucks and race cars attest to that. The turbocharger's
proven performance and durability have made it the choice of
companies as diverse as Nissan, Mazda, Buick, Porsche, Toyota,
Saab, Volvo and others.
A turbocharging system, however, is only as good as its
components. This is especially important when fitting a
turbocharger to a normally aspirated, late-model engine. The
modern power-train is a marvel of mechanical, computer and
electrical engineering. Power-per-displacement, smoothness and
sophistication, reliability, emissions sensitivity–even fuel
economy–are designed in and aggressively managed. The
payoff: a superb driving experience and ample power
When selecting a turbocharging system, the last thing the
enthusiast wants is to take a step backward by using
"any" piece!
The wastegate is commonly a spring-loaded valve fitted just
before the turbine. The valve opens and bleeds off excess exhaust
pressure when the compressor reaches a predetermined boost. The
wastegate performs three jobs:
But consider the "working
environment," and you'll understand why wastegate technology
and quality are an investment.
Heat. A wastegate must withstand brutal heat. A highly modified
engine can generate over 900C/1652F-on the street! At that
extreme, standard metals can melt. GReddy Performance Products
wastegates are made of high quality stainless steel and ductile
cast iron that can withstand temperatures exceeding 950C/1742F.
Boost control. As good as stock wastegates are, our engineers
have found that some aren't precise enough or properly sized. A
wastegate that permits boost to fluctuate between 12 and 16 psi
when the target is exactly 14 psi simply isn't delivering maximum
power and engine protection all the time. We've seen some of
these "leakers" dump too soon and the pressure drops
drastically. The turbo has to play "catch up."
GReddy's CNC-machined wastegates never "waste"
exhaust-gas energy. Our Type S wastegates are designed for
street/performance applications. They're ideal for smaller
engines (1.6 to 2.0 liters) and smaller turbocharger
applications.
The Type R is for larger-capacity turbos and engines in
the 300 HP-plus range.
The Type C is ideal for "highly motivated"
vehicles of between 400 and 1000 HP.
Get GReddy. Tomorrow's OEM technology today.