Haltech F9A - Manual (Page 30)

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HDy
to run the programming software (not the installation software), you need to instead type :
HDDy
The /A tells the programme you have an Azerty keyboard. The programme will adjust
accordingly.
2.2.6 Acknowledging the Risks
Once the program begins running a title page should appear briefly and then a warning screen
will be displayed. Read the warning and only proceed if you are prepared to accept the risks
involved in tuning your own engine. Faulty tuning can be dangerous and/or can damage your
engine.
2.3 The Online and Offline Modes
On the F9 system title page, the software asks whether to operate in ONLINE or OFFLINE
mode. The Offline mode is very useful to familiarise yourself with the Haltech software, but
should not be used to make lasting adjustments to the fuel maps unless there is a special
reason for doing so. If you wish to experiment and familiarise yourself with the software
press N for Offline mode, but if the ECU is installed and power is available then we suggest
the Online mode be selected. Press Y to select Online mode.
2.4 Using the System Online
In the Online mode there is a two-way flow of information between the ECU and the
programming computer. The communication cable must be installed and power must be
available to the ECU before the system can communicate. The Online mode will be used most
frequently. While using the system Online, you can view engine information directly and
make adjustments. Any changes or modifications made on the computer are instantaneous and
will be immediately recorded in the ECU. When the programming cable is removed and the
ignition switched off, the ECU will retain all of its memory. The maps do not need to be
saved, but keeping a copy on disk is always good practice and is recommended. (See 9.1)