There are many different 'Other Maps' that can be found in the software depending on the specific bike. Below are the most common maps that can be found and their basic descriptions.
- ETV
- ETV (Electronic Throttle Valve) maps control how much the ETV is opened, usually from 0% (fully closed) to 100% (fully open), based on the engine RPM and the TPS signal from the throttle-by-wire sensor. This map is only found on bikes which use an electronic throttle valve.
It is best to adjust this map based on rider feedback and preference.
- STP
- STP (Secondary Throttle Plate) maps are available in the maps for some bikes which use a cable throttle, to optimize the flow of air into the engine under different load conditions.
The STP map controls how much the secondary throttle plates open relative to primary throttle position and RPM.
- Fuel Trim
- Ignition Dwell
- Ignition Dwell is the amount of time the ignition coil is charged during the ignition sequence.
- Injector Balance
- Injector Balance maps control the balance in the share of fuel injected by the upper and lower injectors at any given RPM and TPS.
The lower injectors are generally used at low-mid RPM ranges, with the upper injectors starting to be used at higher TPS and RPM regions.
Some models will only have an ‘Upper Injector’ balance map.
- Exhaust Valve
- Exhaust Valve Opening maps control how far the exhaust valve is opened at any given RPM and TPS.
For bikes that have a complete aftermarket exhaust system installed, there is usually no exhaust valve and so this map will not be functional. This is also the case for bikes that have had the exhaust valve/servo removed.