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Greddy Profec B

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calvintys

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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:

Solenoid valve used to adjust boost pressure

Offers high-boost and low-boost selection points

No extensive programming needed

Dip switches on back used for integral or external wastegates

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

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https://www.sau.com.au/forums/topic/24402-greddy-profec-b/#findComment-521440
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calvintys Experienced

calvintys

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CONAN= Yes it is second hand

RbHed= This is taken direct from Greddy web page.

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:

Solenoid valve used to adjust boost pressure

Offers high-boost and low-boost selection points

No extensive programming needed

Dip switches on back used for integral or external wastegates

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https://www.sau.com.au/forums/topic/24402-greddy-profec-b/#findComment-527198
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