Tips and general information – ThunderMax PN#309-366 - GenII V-Rod User Manual
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309-466 Installation / Setup Guide V2013.09.16
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these settings within the live module should you want to change any of the settings from the MAP default
settings.
Closed Loop Processing (Module) – Check [ON] to enable closed loop AutoTune processing. During closed loop
processing, the ThunderMax module processes feedback from the oxygen sensors to adjust the fuel 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 econom y. 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 10-25%).
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.
TIPS AND GENERAL INFORMATION
A packet of dielectric grease is included with your ThunderMax. W hen installing the ECM, apply the provided
dielectric grease to the inside lip of the ThunderMax ECM (Photo 1) and across the clear case on the 36 pin ECM
connector (Photo 2). Spread the grease across all of the female terminal openings, making sure the grease penetrates
openings. This grease will greatly improve vital conductivity between the ThunderMax and the 36 pin connector.