Electronic Boost Response Controller Conversion

Convert the original version EBRC to include the new features in the EBRC II

This page will discuss how to use the older version of the Electronic Boost Response Controller (EBRC) to include the new features of the EBRC II.  For reference, the old schematics for the orinignal version are available at the end of this page.


The old circuit design is still a good one.  In fact, little has changed in the control circuit itself.  All that is required is that you build-up the remote relay portion of the dual-module EBRC II.  Here is the schematic and parts list for the remote circuit:

Remote Relay Circuit

R12 50 ohm 10 watt 271-133
R13 560 ohm 1/2 watt 271-1116
RLY1 12V DPDT relay 275-249

You can mount the remote relay circuit wherever you wish.  You can follow the guidelines on the EBRC II page, and mount it under the hood, or you can mount it near the old control circuit.  Whether you ran all the wires for the old circuit or installed the diodes under the hood, it is easy to integrate the old circuit with the new relay circuit.

The Conversion

You will need to remove the "Wastegate Solenoid In" wire from pin 5 of the old circuit.  This wire is connected to pin 4 of the relay circuit.  Similarly, the "Wastegate Solenoid Out" wire from pin 6 of the old circuit needs to be removed and connected to pin 5 of the relay circuit.  Now, you just have to connect the two circuits by running a wire from pin 6 of the old circuit to pin 1 of the relay circuit.  If you choose to mount the relay circuit near the old control circuit, you simply move the appropriate wires and run a short wire between the two (pin 6 to pin 1, as above).  If you mounted your diodes under the hood, just replace the diode circuit with the relay circuit.  Finally, connect the relay circuit to ground and 12V.

Original Circuit Schematics

Here is the schematic and parts list to the old design.  The high resolution version is also still available for detailed viewing and printing.  These images work now, I promise!

Old Control Circuit

Old Remote Diode Circuit

D1 1N4744 276-564
D2 1N4739 276-562
D3 1N4148 276-1620
D4 1N4148 276-1620
D5 1N4148 276-1620
D6 1N4148 276-1620
D7 1N4148 276-1620
D8 1N4002 276-1653
D9 1N4002 276-1653
D10 Computer control LED 276-1622
or others
D11 Circuit output status LED
D12 Circuit ready LED
R1 100k ohm var 271-284
R2 100k ohm pot 271-092
R3 100k ohm var 271-284
R4 68 ohm 1/2 watt 271-1106
R5 150 ohm 1/4 watt 271-1312
R6 10k ohm 1/4 watt 271-1335
R7 4.7k ohm 1/4 watt 271-1330
R8 1k ohm 1/4 watt 271-1321
R9 1k ohm 1/4 watt 271-1321
R10 1k ohm 1/4 watt 271-1321
U1 741 general-purpose op amp 276-007
RLY1 12V SPST reed relay 275-233
RLY2 12V SPST reed relay 276-233
S1 SPST switch (any) 275-series

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This page is maintained by Russell W. Knize and was last updated 10/09/98. Comments? Questions? Email minimopar@myrealbox.com.

Copyright © 1996-2003 Russ W. Knize