FT500 SFI / FT500LITE SFI
60
Ignition tables adjust
18. Ignition tables adjust
All timing tables can advance or retard timing. When a base map is
generated, all tables are filled with standard values, so, if you want
to use just the main timing table, you must zero fill all compensations
manually.
18.1 Main ignition table
The editing mode of this table is, by standard, the simplified 2D table,
being possible to change it to advanced 3D table via FTManager
software.
Through the software is also possible to edit the range interval of MAP,
TPS and engine RPM on the maps. This makes possible to increase the
detail level on specific ranges where a fine tuning is needed.
Basic mode 2D table
In this mode, the main ignition table is a 2D map that relates RPM and
timing from 400rpm to the max RPM.
Using an analogy, if you want an initial timing of 15º and final of 32º (as
you do on a distributor), you must enter 15º at 600rpm and 32º at the
maximum rpm, 8600rpm for example. The timing between maximum
and minimum RPM are interpolation of initial and final timing . If you
want to run a fixed timing, all cells must be filled with the same timing.
Remeber that the timing applied will only be the same as the main
table if all the compensations are zero.
The rpm breakpoints can be changed up to 32 cells, allowing a fine
tuning.
Ignition Tables Adjust
400 RPM
+18,75
º
Advanced mode 3D table
In this mode, the main ignition table is a 3D map that relates RPM x
MAP x ignition timing. As well as the basic mode, the MAP range is
from -14.5psi up to de desired pressure. When the main timing table
is by TPS, the table is from 0 to 100% in 10% steps.
Main ignition table
20000
RPM
19375
-0,80
+31,1
-30,0
+50,0
-0,90
bar
+31,9
The default RPM steps are 200rpm until 3000rpm, and above this
rpm the steps are in 500rpm. The MAP, TPS or RPM steps can be
edited via FTManager
18.2 Overall ignition trim
To apply a quick compensation to the entire ignition map, the Overall
Ignition Trim function may be used. It is only necessary to inform the
correction, negative or positive, and confirm by pressing the right
button. This correction will be added to or subtracted from the entire
ignition table based on RPM
Overall ignition trim
Advance or retard
entire map
-6,01
°
18.3 MAP/TPS compensation
This table changes according to the main map configuration (MAP
or TPS). When the main ignition table is setup by MAP, this table is a
compensation by TPS. When the main ignition table is setup by TPS,
this compensation is by MAP.
MAP compensation
-0,90 bar
15,7
º
TPS compensation
0 %
2,9
º
