and Multi Port Fuel Injection to a New Level.
Lockers P4 and SFI-6
For all P4/SFI-6 users: click
here to skip down to the comm cable install and knock filter options.
This guide is to help with the self-installation of the EBL P4 Flash
and the EBL SFI-6 Flash into
- All soldering is done on the bottom of the ECM board
- Solder through the conformal coating, no need to remove it
- Solder four jumper wires between the MEMCAL socket and edge
- Solder a jumper at the A/B harness connector
- Solder two wires from the interior comm cable
to the A/B harness connector
- Mount a small aluminum bracket using existing screw
locations. This supports the back edge of the EBL P4/SFI-6 PCB
- The EBL P4/SFI-6 Flash board then plugs into the MEMCAL
socket and the interior comm cable plugs into the board
- Insert the exterior comm cable terminals into the vehicle
A/B harness connector
Parts for install
(supplied with EBL P4/SFI-6 system):
From top to bottom:
Internal comm cable
Wire for jumpers
Screws & lock washers for mounting bracket
Installation into the ECM:
When you open the ECM this is what you will see (with MEMCAL removed).
Remove the ECM from the lower case.
Bottom of ECM at MEMCAL socket and edge card connector. Number at lower
right match the numbers on the MEMCAL socket.
solder the jumpers first heat and add solder to the pins and leaves of
the edge card connector. Tin the wire ends. Then hold the wire in place
and heat the joint.
To locate the pins used on the MEMCAL socket, note the trace patterns.
This is easier then trying to count pins.
Jumpers soldered in place. Be sure to do a decent job of soldering
along with keeping the wires short.
Run the open ends of the interior comm wires between the two
multi-legged devices (ignore the bracket for now).
Then out past the connectors and to the bottom side of the ECM.
P4: Locations that get soldered. Pin B4 gets a jumper to pin B5 (pin to the
left). Red wire goes to A1 and white wire goes to A10.
SFI-6: Locations that get soldered. Pin B4 gets a jumper to ground. Red wire goes to A1 and white wire goes to A10.
how the wires are not pressed against other connector pins. Double
check for shorts before continuing. Place the ECM back into the lower
the two screws (1/4" hex head) and clean any blobs of conformal coating
from plastic piece. This is from about an inch to the left and almost
to the right-hand screw that is still in place. An Xacto or utility
knife can be used for this. The aluminum bracket needs to fit flush to
the plastic retainer.
If the red 'gum-drop' (RV4) in the
right center is upright carefully bend it down a little for clearance.
The one in question is bent down in this picture.
the bracket with the supplied screws and star lock washers. The slotted
hole is to the right. Leave the screws a little loose for now. This
will make it easier to install the EBL P4/SFI-6 Flash board.
install the EBL P4/SFI-6 board, insert the far edge into the
slots of the
bracket. Note the location of the bracket ears to the ADC terminal
strip and the L in EBL.
Align the EBL P4/SFI-6 connector to
the MEMCAL socket connector. And gently at first, to ensure
alignment, press the connector into the socket.
Then firmly seat it into the MEMCAL socket. To
puncture wounds can use the static bag folded between your thumbs and
press above the connector between the levers.
the two bracket screws and plug the comm cable into the connector as
shown. Take care not to damage the EBL P4/SFI-6 board while
Set the cylinder select jumper.
Note: the EBL SFI-6 board will have a jumper soldered across the 6-cylinder selection. No need to set the cylinder select.
provided the jumper is installed side-to-side. This is OK for an
8-cylinder MPFI engine. The jumper may be installed across
(side-to-side) any of the pins or left off for an 8-cylinder engine.
picture to the right shows the cylinder select set up for a 4-cylinder
MPFI engine. The 6 location is for a 6-cylinder MPFI engine. The T
location is for a TBI set up. The TBI set up is typically used on
4-cylinder engines. The injector will fire once every time a spark plug
Exterior Comm Cable
The exterior comm cable is installed into the ECM harness connectors.
This link (click here)
has additional information on R&R'ing the wires/terminals.
Starting with the connector layout...
connector of interest in the small center one. This is the A/B
connector. Note that the left connector may be either
the combs by un-latching the small tabs. Note that in cold weather the
plastic can break when doing this. A hair dryer can be used to warm
Wires inserted into proper locations.
Red to A1
Green to A10 (wire may also be white)
Black to B4
Replace the combs and either ty-wrap or electrical tape the braided
part of the cable to the EFI harness.
The supplied USB cable plugs into the small connector and into the port
on your laptop/PC.
When plugging the USB cable into the jack be sure to fully seat the
USB Comm Cable Driver:
drivers for the USB interface are included with the EBL. Once the
EBL P4/SFI-6 CD is installed plug the USB cable into a port.
doesn't need to
be connected to the EBL ECM at this time. A new hardware found dialog
will pop up. Just point it to your laptop (not the Internet) and it
will find and install the drivers.
It will do this twice. Then once they are installed and the port is
ready to use, follow the instructions at this link (click here)
to lower the latency setting and to find out which port has been
assigned to it. Select that port in the EBL P4/SFI-6 What's Up
Knock Filter Options:
a MEMCAL. The right side end pins align with the right most holes in
the MEMCAL connector. Looking into the top of the MEMCAL the end with
the white board is to the right. Using a MEMCAL also provides limp
mode. Although once the injector size to engine displacement is
increased it is better to not have limp mode.
Note that with
this method the MEMCAL will protrude from the case by about 1/2".
Although it clears the case opening so that no case rework is required.
Important: only use MEMCALs from P4/SFI-6 style ECMs such as
the '7730, '7749, and '8253
Important: when installing the MEMCAL cover do not
screw it down tightly against the MEMCAL. Doing so can damage the
EBL P4/SFI-6 board. Use spaces between the ECM case and the
to prevent this.
a knock filter removed from a MEMCAL soldered in. The advantage here is
that knock filters from ECMs other then a P4/SFI-6 may be
used. Such as one
removed from a TBI truck PCM. Note that it requires being soldered in
(shown here not soldered in). Although this is easy with the large and
low number of pads to be soldered.
With a pluggable knock filter. It is installed into the small 'out
rigger' board (easily seen two pictures up).
module is from vehicles such as the Caprice, Corvette, Camaro or
Firebird LT1 PCM, Camaro/Firebird 3.4l engine PCM, or Corvette LT4 PCM.
Example of an external knock filter. For wiring see the
EBL P4/SFI-6 ECM wiring diagrams, page 1.
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EFI, All Rights Reserved.
of this document may
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