KManager V1-2-0-3
Posted: Wed Jun 08, 2005 2:50 pm
Read this first.
Changes for V1.2.0.3
? Added minimum and maximum short term fuel trim settings.
? Split the 'Show Boost Tables' option into two options (for stock and 3 bar MAP sensors)
? Double clicking in the sensor window brings up the Sensor Setup window.
? Expanded the minimum o2 sensor lambda from 11.48:1 to 10.70:1
? Added second nitrous output
The minimum and maximum short term fuel trim settings are to limit the stock closed loop fuel trim. The stock limits are very high, and it seems that it should not be necessary to have more than 10-15% short term fuel trim unless something is wrong.
The 'show boost tables' was split to make the laptop screen a little easier when tuning a boost car on a stock MAP sensor.
The sensor setup change was made for convienience.
The stock o2 sensor (for wideband models) will read (in theory) down to 10.70:1 A/F. The stock behavior is to limit this to 11.5:1, which is slightly too high for some boosted applications.
The second nitrous output is the biggest change. The possible inputs for each nitrous output have been expanded, and altered to a drop down list.
There nitrous fuel has been changed so that there is a ramp time and decay time. The ramp time is the time it takes to reach the full fuel change, and the decay time is the time it takes to return to normal fuel. Note that the resolution of the times are 10 ms.
With nitrous a short ramp time (100 ms or less) is good, with a longer decay time (200 ms should be good). When removing fuel for water/methanol, a much longer ramp time is needed as the pump takes a little time to build pressure (500-1000 ms ramp time). The decay time for water can be short.
Negative fuel is handled differently. Rather than using -100 to tell the ECU to take out 100 units of fuel, use 100 for the fuel setting and check the 'remove fuel' box.
Changes for V1.2.0.3
? Added minimum and maximum short term fuel trim settings.
? Split the 'Show Boost Tables' option into two options (for stock and 3 bar MAP sensors)
? Double clicking in the sensor window brings up the Sensor Setup window.
? Expanded the minimum o2 sensor lambda from 11.48:1 to 10.70:1
? Added second nitrous output
The minimum and maximum short term fuel trim settings are to limit the stock closed loop fuel trim. The stock limits are very high, and it seems that it should not be necessary to have more than 10-15% short term fuel trim unless something is wrong.
The 'show boost tables' was split to make the laptop screen a little easier when tuning a boost car on a stock MAP sensor.
The sensor setup change was made for convienience.
The stock o2 sensor (for wideband models) will read (in theory) down to 10.70:1 A/F. The stock behavior is to limit this to 11.5:1, which is slightly too high for some boosted applications.
The second nitrous output is the biggest change. The possible inputs for each nitrous output have been expanded, and altered to a drop down list.
There nitrous fuel has been changed so that there is a ramp time and decay time. The ramp time is the time it takes to reach the full fuel change, and the decay time is the time it takes to return to normal fuel. Note that the resolution of the times are 10 ms.
With nitrous a short ramp time (100 ms or less) is good, with a longer decay time (200 ms should be good). When removing fuel for water/methanol, a much longer ramp time is needed as the pump takes a little time to build pressure (500-1000 ms ramp time). The decay time for water can be short.
Negative fuel is handled differently. Rather than using -100 to tell the ECU to take out 100 units of fuel, use 100 for the fuel setting and check the 'remove fuel' box.