HP TwinTec User Manual

User Instructions for

Twin Tec

TCFI Log Software

CAUTION: CAREFULLY READ INSTRUCTIONS BEFORE PROCEEDING. THE USER IS

ASSUMED TO BE FAMILIAR WITH MICROSOFT WINDOWS AND PC OPERATION.

OVERVIEW

TCFI Log software runs under Microsoft
Windows 98/ME/XP/Vista. This software allows TCFI
fuel injection controller users to view real time engine
data during dyno tuning, download and display data
logged by the unit including operating statistics, and to
control certain engine functions. An optional USB
Interface or PC link cable is required to connect to the
existing four terminal Deutsch style data link connector
on the H-D

provides PC connectivity for all of our engine controls
(ignition and fuel injection systems) and eliminates the
requirement for multiple cables or a separate USB
adapter if your laptop is not equipped with an RS-232
serial port (9 pin male D-sub connector). The USB
Interface is compatible with Windows 98/ME/XP/Vista.

will require the original RS-232 PC link cable P/N
TCFI-C also used with our new TC88A ignition. Please
note that the TC88C PC link cable used with the earlier
TC88 ignition will not function. The two types of PC link
cables have identifying labels, but otherwise appear
similar. However, the electrical connections are
different and the two cables types cannot be
interchanged.

appears blank. You have multiple display options. You
can display real time engine data on an instrument
panel type screen by using the View Real Time Data
command on the View menu. You can display data
logged by the TCFI unit on a chart recorder type
screen. You can also view engine operating statistics
logged by the TCFI unit. Data logged by the TCFI unit
must be downloaded before it can be displayed, by
using the Download Data From TCFI command on the
Communications menu. Once data has been
downloaded, it is automatically displayed on a chart
recorder type screen. You can view the engine
operating statistics by using the View Statistics
command from the View menu. You can save this data
by using the Save File command from the File menu.
You can display a previously saved data file by first
using the Open File command on the File menu and

Daytona Twin Tec LLC, 933 Beville Road, Suite 101-H, S. Daytona, FL 32119 TCFI Log
[phone] www.daytona-twintec.com



wiring harness.

The new Twin Tec USB Interface P/N USB-INTF

If you do not have the new USB interface, you

After TCFI Log is launched, the main screen

3/2007

then using the View Chart or View Statistics
commands on the View menu.

TCFI Log is compatible with all TCFI Gen II units
(including the new TCFI IID version) and TCFI units
with Rev 5.0 or higher firmware.

A sample data file (Sample.log) is included in
the program folder.

PC REQUIREMENTS

If you are using the new Twin Tec USB Interface
(P/N USB-INTF), refer to the supplied instructions for
details. No additional hardware is required.

The original PC link cable connects to an RS­232 serial port by means of a female 9 pin D-sub
connector. Data transfer occurs at 56 kBaud. The high
baud rate limits the maximum cable length and the use
of an extension cable is not recommended. Due to the
cable length limitation and the need for portable
access, a laptop PC is recommended. The PC must
have a free serial port (COM1-255) with a standard 9
pin male D-sub connector. If your laptop does not
include a serial port, you can use a USB adapter.
However, not all USB adapters will work correctly with
our PC link cables. Most of the inexpensive USB
adapters are intended for interfacing Palm Pilot type
devices and do not support all the signals required by
our PC link cables.

We sell and recommend a low cost USB adapter
(P/N USBG-232) that has been tested with a wide
range of system configurations. The USBG-232
adapter comes with correct and updated driver files on
CDROM. After installation the USBG-232 adapter will
usually appear as COM5.

We recommend a laptop with Pentium processor
and super VGA display (SVGA with 1024 x 768 pixel
resolution) running Windows 98/ME/XP/Vista. Data
chart display is graphics intensive and a high speed
Pentium processor is recommended. Processors
slower than 300 MHz will exhibit sluggish program
loading and response. The PC must have a CDROM
drive for program loading.

TCFI Log includes print commands to print
downloaded data. The program has been tested with

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Hewlett-Packard laser and inkjet printers and Epson
inkjet printers. We recommend using a color inkjet
printer.

SOFTWARE INSTALLATION

The software is supplied on CDROM media or in
the form of a compressed file downloaded from our
website. The installation process uses InstallShield.
This industry standard installer is based the new
Microsoft Windows Installer service that greatly
reduces potential problems such as version conflicts
and allows for application self-repair. Since Windows
98 systems did not originally include the Windows
Installer service, the required installer software is
included in the distribution media.

Before proceeding with installation, shutdown any
other applications that ma y be running.
Vista, you must disable the User Account Control
(UAC) during installation. If you are not familiar with the
UAC, please refer to the Vista UAC Tech Note on our
website's Tech FAQ for details.

Use the Windows Explorer or the Run command
from the Windows Start Menu to launch setup.exe in the
TCFI_Log folder on the CD ROM or the setup.exe file
downloaded from our website. InstallShield will install the
software in an appropriate folder under Program Files.

Once InstallShield has completed the
installation, TCFI Log will appear on the Windows Start
Menu. You can then launch it just as you would any
other Windows program.

For Windows

Turn the ignition key and engine run/stop
switches on to provide power to the TCFI unit. Do not
start the engine if you want to download data.

If the TCFI unit has been removed from the
motorcycle, you can do bench top programming by
using an adapter harness (P/N TCFI-ADAPT) that
includes a small 12 volt DC power supply.

COM1 is used as the default port. If you are
using a different COM port, use the Port Setup
command on the Communications Menu.

REAL TIME ENGINE DATA DISPLAY

When the engine is running, you can display real
time engine data on an instrument panel type screen
by using the View Real Time Data command on the
View menu. Please note that real time engine data
cannot be directly saved by means of the TCFI Log
program. However, this data is constantly being logged
by the TCFI unit and can be downloaded (for example
at the end of series of dyno runs).

Real time engine data is displayed on an
instrument panel type layout with round tach and
speedometer gauges and bar graph type gauges for
most other parameters. Barometric pressure (In-Hg),
any diagnostic codes, status of the user output, and
status messages are displayed in additional windows.
If the engine is not running most values will appear as
zero.

Displayed parameters include:

TCFI Log requires the Monospace 821 BT fixed
pitch printer font in order to properly align columns
when printing. The Monospace 821 BT font is included
in the distribution media and automatically copied to
your Windows Fonts folder during installation. A
backup copy is also placed in the program folder. If you
accidentally delete this font, use the Install New Font
command from the Fonts folder File menu. The
filename associated with Monospace 821 BT is
monos.ttf.

TCFI CONNECTION

If you are using the new USB Interface, refer to
the supplied instructions for details. No additional
hardware is required.

If you are using the original RS-232 PC link
cable, connect the cable to the OE data link connector
and PC serial port. The OE data link uses a four
terminal Deutsch connector that is usually found near
the TCFI unit.

Daytona Twin Tec LLC, 933 Beville Road, Suite 101-H, S. Daytona, FL 32119 TCFI Log
[phone] www.daytona-twintec.com

3/2007

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RPM – engine crankshaft RPM (numeric value
displayed beneath gauge)

VSS – vehicle speed in MPH (numeric value
displayed beneath gauge)

TPS – throttle position (0 to 100%)
MAP – manifold pressure in In-Hg (29.92 In-Hg

corresponds to atmospheric pressure)

ET – engine cylinder head temperature (deg C)
IAT – intake air temperature (deg C)
BAT – battery voltage
IAC – idle air control stepper motor position

(higher number means more idle air)

Figure 1 – Real Time Engine Data Display

AFR – the air/fuel ratio bar graph has dual

pointers. The yellow pointer on the left side is

the air/fuel ratio command (from AFR table). The

white pointer on the right side is the actual

air/fuel ratio based on the exhaust gas oxygen

sensor reading. Note that the value will remain

near 10 until the sensor has warmed up. Front

and rear cylinder AFR values are displayed for

TCFI IID units.

BLM – block learn multiplier (main fuel table

correction factor based on exhaust gas oxygen

sensor feedback, shown as percent value from

75-125%). Front and rear cylinder BLM values

are displayed for TCFI IID units.

FRONT INJ PW, REAR INJ PW – injector pulse

width in milliseconds

FRONT ADV, REAR ADV – ignition advance in

degrees BTDC
Daytona Twin Tec LLC, 933 Beville Road, Suite 101-H, S. Daytona, FL 32119 TCFI Log

[phone] www.daytona-twintec.com

3/2007

IDLE TPS DISPLAY

You can check the idle TPS adjustment by using
the View Idle TPS command on the View menu. Turn
the run/stop switch on, but do not start the engine
when using this function. Idle TPS volts are displayed
on the TPS bar graph gauge. All other instrument
values will appear as zero.

With the throttle fully closed, verify that the
gauge display is between .30 to .80 volts for TCFI IID
units or between .35 to .45 volts for all other TCFI and
TCFI II units. If the value is outside this range, you will
have to adjust the TPS sensor. For optimum
performance, adjust the TPS sensor to .40 volts.

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