mack85n Posted January 23, 2017 Report Share Posted January 23, 2017 I've read that Alpha n Tuning can be more accurate as there is no delayed feedback for manifold pressure changes to calculate fueling when tuning base fuel tables. Is this correct and also if tuning a fuel table with TPS as the load axis where would atmospheric compensation be taken into account?Was thinking throug a 4D fuel table based on atmospheric pressure but not sure ? Quote Link to comment Share on other sites More sharing options...
Scott Posted January 23, 2017 Report Share Posted January 23, 2017 You're right about there being a delayed feedback using MAP when compared to TPS. However the delay would be quite small. We recommend using the MAP over TPS where possible as it gives a better representation of engine load than TPS. However there are situations where TPS is a better option for the load axis of the fuel table due to a stable MAP reading not being available, because of aggressive cams or individual throttle bodies.In this situation we recommend setting the load axis of Fuel Table 1 to TP(Main) and then setting the Equation Load Source to Load=BAP. This way the ECU will still compensate for changes in barometric pressure. The BAP reading will come from the ECUs internal BAP sensor.Scott Quote Link to comment Share on other sites More sharing options...
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