M1tch Posted April 23, 2022 Report Share Posted April 23, 2022 Hi all, Just working through boost by gear, I have set the gear detection to ECU calculated and the table is populated with the various gear ratios based on KPH/RPM. I can see that most of the time the ECU does calculate the correct gear but sometimes it just drops out and just shows gear 0 - which then causes issues if I am trying to aim for a higher boost in that gear. I have a digital input #1 as my speed source which is calibrated correctly and is 1 hz = 1mph - the units settings are set to MPH via PClink. I have noticed that at 30mph (30hz on DI#1) is showing as 46.3rpm/kph and its calculated 3rd which is correct, slightly odd though as its showing 41.94rpm/kph in the ECU calculated table? Does the system allow a variance at all? Looking at some of the logs I believe these are what I am getting using the output from the log: 1st = 655.35 rpm/kph 2nd = around 107 to 112 rpm/kph 3rd = around 61.50 to 62.10 rpm/kph 4th = around 34.80 to 35.20 rpm/kph 5th and 6th i've not really checked via the logs yet, below is the table in the ECU, should I just bin it off and add the above figures in? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 23, 2022 Report Share Posted April 23, 2022 Set it to user defined and enter the average "Gear Ratio Calc" values for each gear from a log. You first gear value of 655 looks wrong as that means your car would only do 10kmh @ 6500RPM in 1st. Possibly the clutch was slipping in the area you got that value from. Quote Link to comment Share on other sites More sharing options...
M1tch Posted April 28, 2022 Author Report Share Posted April 28, 2022 Think I have sorted it using the user defined option, think 655 was when it was logging reverse - will keep an eye on it. Quote Link to comment Share on other sites More sharing options...
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