Fuzzy Logic Boost Controller functionsfunctions profecsetupprofecsetup checksetcheckset troubletrouble

Setup

Positioning the Dip Switches

(Located on the back of the controller. Black indicates position of switch tabs)

Actuator Type

Actuator Type (when overboost occurs)

External Wastegate (Offset -50% to +50%)

External Wastegate (Offset -100% to +100%)

Learning Mode

The PRofec first "learns" the characteristics of the actuator type, external wastegates and the stability of the boost curve. There are two phases:

Phase 1 (P1) Learns the stock boost level

Phase 2 (P2) Learns the basic boost curve and the difference between the pressure in the wastegate and the pressure in the intake manifold.

Run the learning mode whenever a PRofec is installed or after any changes, such as a different turbocharger or intercooler, are made that affect the characteristics of the wastegate or engine output.

Basic learning

1. Turn the power switch ON

2. The indicator will show "P1"

3. Make a full-throttle run in third or fourth gear to obtain maximum boost. (This is the base boost.) The LED will indicate the maximum boost achieved during the run. The display will flash a read out in BAR pressure.

4. Push the power switch TWICE to go to "P2" mode. The indicator will read "P2"

5. Make another full-throttle run under the same conditions as you did in "P1." When the indicator, which in this situation is an active boost gauge, shows NEGATIVE pressure when you back off the throttle, P2 is finished. (If the indicator shows "EE," make a few more runs until the PRofec shows negative pressure.

Alternative Learning Procedure

ALP is used when the vehicle has a hard time producing sufficient boost pressure to program P1 and P2 properly. The Alternative Learning Procedure is used only when P1 AND P2 keep generating "EE" error codes.

1. Turn the power switch ON and hold down for five seconds.

2. "P1" should should appear.

3. Use the Set Boost dail to 0.4 kg/cm (5.7 psi).

4. Press Power Switch twice to obtain "P2"

5. Make a full-throttle run in third or fourth gear at a boost of 5~6 psi. When the indicator becomes an active boost gauge, "P2" is completed.

Offset (for external wastegates only)

Compare the boost reading of your indicator and that of an aftermarket boost gauge. Adjust the offset by turning the offset dial clockwise to increase and counterclockwise

Set Boost Mode

1. Depress the SET BOOST dial and make sure that it pops out.

2. Set the desired boost.

3. When the dial has been idle two seconds, the PRofec will beep, signaling the entry has been accepted.

4. Press the SET BOOST dial back in.

5. Make several full-throttle runs. The LED readout should match the SET BOOST setting.

IMPORTANT

• If the SET BOOST is adjusted below the stock boost, the PRofec will boost to stock base pressure. In other words, the PRofec will not allow you to establish a boost peak lower than stock.
  
• If overboost occurs, see the troubleshooting section.
  
• Overboost is any time full-throttle boost is higher than the set boost setting.
  

CAUTION

Avoid boost levels your engine is not capable of sustaining safely. Ensure that your SET BOOST point is within a safe range. Overboosting may cause engine damage. GReddy Performance Products is not responsible for misuse of the PRofec.

OTB (Over Take Boost) and HIGH BOOST MODE

1. Set the desired SET BOOST

2. Set the OTB or High Boost by adjusting the RATIO DIAL to the desired level. The LED above the "RATIO" in the indicator will light up and the OTB or High Boost setting will be displayed.
(Setting limit: 0~+50% above SET BOOST.)

3. Leave the dial alone. Two seconds later the PRofec will beep, confirming the entry has been accepted.

4. Set the OTB Operation Time by adjusting the TIME dial. The LED above the "TIME" will light and display duration. (Setting limit: ~30 seconds)

How to use OTB Mode

1. Push the OTB switch once. A countdown will begin. (Do not press the OTB switch for more than two seconds. Doing so will put the device in High Boost Mode.

2. At the end of the countdown, boost will return to SET BOOST MODE. (low boost).

IMPORTANT

To switch back to SET BOOST MODE during the countdown, simply the push the OTB switch.

Do not adjust the RATIO or TIME dial during OTB Mode.

If overboost occurs see troubleshooting section.

Since High Boost is determined by the Set Boost setting plus the Ratio dial setting, be sure to change the Ratio setting whenever the Set Boost point is altered.

High Boost Mode

Used to add a safe margin of extra boost over and beyond the normal (low) Set Boost setting.

How to use High Boost Mode

1. Press the OTB switch for more than two seconds. The LED next to the OTB switch will light up indicating the PRofec is in High Boost Mode.

2. Press the OTB switch once again to return to Set Boost Mode (low boost).

IMPORTANT

• Do not adjust the Ratio dial while in High Boost Mode
  
• If overboost occurs, see troubleshooting
  
• Since High Boost is determined by the Set Boost setting plus the Ratio dial setting, be sure to change the Ratio setting whenever the Set Boost point is altered.

Warning Alarm

Alerts the driver with a sound and LED display whenever boost exceeds the Set Warning level. If the condition continues for more than a second, the boost pressure will be returned to stock boost levels.

How to Set Up the Warning Alarm

1. Press the Power and OTB switches simultaneously.The Alarm LED will illuminate and the Warning setting will be displayed.

2. Quickly (within one second) press the OTB switch to toggle to the desired Warning setting.

3. Once the swtich has been left alone for two seconds, the PRofec will beep, signaling the entry has been accepted.

Warning Alarm Function

When boost pressure exceeds the warning alarm point for more than a second:

Returns to stock boost pressure until boost falls below the warning level. Alarm will beep as long as the boost exceeds the setting. Alarm LED will be illuminated until it is cleared by pressing the Power switch.

When boost pressure exceeds the warning alarm point for less than a second:

Alarm will beep as long as the boost pressure is over the warning setting. Alarm LED will be lighted as long as the boost pressure exceeds the warning setting.

Confirming Settings

To check each setting:

1. Press the Power Switch for two seconds. The PRofec will beep. (Do not press longer than two seconds.)

2. The PRofec will begin checking itself and display in the following order:

• • Wastegate Type setting. (Top right LED for actuator type; lower left LED for external)
  • SET BOOST setting
  • OTB setting
  • OTB duration
  • Offset Adjusting Point (for external wastegated systems only)
  • Warning setting

3. After the program goes through each setting, the window returns to the active boost gauge display.

4. If any settings are changed while the vehicle is not running, the alarm will sound and a "CH" (Check Setting Light) will flash in the LED display. To see which setting was modified, press the Power switch once. Pressing the Power switch a second time will "lock in" the new setting.

Troubleshooting

Picture PRofec

Taking the "fuzziness" out of understanding the PRofec

Return to GReddy's Home Page