Zipper Mowers Thunder-Max 309-365 Manuale Utente

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volume at all points by creating learned “offset” points 
from the installed ‘base map’ fuel points.  The ‘static’ 
base map is dynamically used by the ThunderMax 
module and the AutoTune’s active (closed loop) 
feedback system.  This system optimizes the fuel points 
to fit the target air/fuel ratio through ‘learned offset 
points’. These ‘learned offset points’ are stored within 
the ThunderMax and are used in conjunction with the 
base map.  The ‘base map’ fuel points are not being 
adjusted by either the AutoTune or ThunderMax 
modules.   
 
If AutoTune Closed Loop Processing is un-checked, fuel 
points will be adjusted to the last learned offset points, or  
if no learning has occurred, to the original base map 
points.  Stored offset points remain within the module; in 
the event that power is interrupted for any reason, the 
learned offset points remain until re-learned or cleared 
under the 

[Map Editing] toolbar menu.   

 

Air Fuel Ratio Override (Module) – A single Target 
AFR setting can be applied using this command. 

 

Clicking this box and changing this number overrides 
ALL ‘Air/Fuel Ratio vs. TPS’ pages at all RPM’s.  To 
target  specific Air/Fuel Ratio RPM ranges and throttle 
positions, leave this box unchecked and edit the 
individual ‘Air/Fuel-TPS @ RPM’ map pages located 
under the 

[Tuning Maps] tree.  Individual Air/Fuel 

targets are pre-set within the base map to provide a 
good balance between power and economy.  Individual 
cell throttle position/rpm AFR targets can be viewed and 
adjusted on these pages.  Use the left/right arrow keys 
to navigate the individual blocks (strike the spacebar to 
view the values); use the up/down arrow keys to adjust 
the values.  Click the 

[Monitor] button when linked live 

and a vertical bar will show the actual throttle position.  
See the SmartLink manual for further tuning instructions.

 

Idle Air Control Override (Module) - Check [OFF].  
This setting should not be checked on except for 
diagnosing a particular type of supported problem or 
during tuning on a load cell dyno.  Changing this setting 
will lead to starting and idling problems. 

 

Maximum CLP Offset (Module) – [Session (Module)] 
button sets the AFR maximum learning correction from 
the base map’s fuel setting per session by percentage 
(range is 0-10%).  A ‘session’ is defined as the period of 
time from engine on to engine off (per cycle). 

 

[Maximum (Module)] button sets the total AFR 
maximum learning correction from the base map’s fuel 
setting by percentage (regardless of number of sessions; 
range is 0-25%).  Unless your application is a 
considerable mismatch to the installed base map, the 
default settings of 5 and 20 percent are sufficient for 
most AFR corrections. 

 

You should always pick the best possible map match 
during the selection of your base map.  The theory 
behind this is to reduce the range and time the closed 
loop system needs to learn offsets (corrections) for the 
target AFR.  If your map selection is a poor match to the 
application, the amount of learning needed will be 
significant.  Review the parameters of your base map vs. 
available base maps under ‘Base Maps Listing’ to 
ensure you have the best map match and the latest 
version of the map.