weathermon Posted January 10, 2016 Report Share Posted January 10, 2016 Hi everyone,I'm helping a friend with his Link ECU to do a bit of tuning on it. I enabled launch control on his 04 GDB Sti and it all seemed ok but then when he took off normally and gave it a bit of revs the launch control was cutting in whilst driving! I'd set the digital input to the correct speed sensor on DI3 - It's set to the same as my WRX running a V44 which was Rising edge, pullup resistor off and a cal table value of 260... That gave a speed of about 1/10th of what it should have been, hence launch control still wanting to activate in the first few gears. I got the speedo working when I changed the cal table to a value of 26 BUT... when the speed reached 65km/hr, it reset back to 0km/hr and then started from there again! so 75km/hr was showing as 10km/hr (and launch control would activate again because it thought it was stationary). I've checked everything I can think of but it's really got me stumped as to what could be causing the speed sensor to be reporting incorrect? Watching the runtime values I see the speedo Hz going up as it should be and reaches around 50Hz at 100km/hr I think it was, so I def know it's sending a correct signal. Can anyone suggest a fix for this? He is running v4.7.1 so not sure if a firmware update would help.Cheers, Mike Quote Link to comment Share on other sites More sharing options...
Scott Posted January 11, 2016 Report Share Posted January 11, 2016 Hi Mike,I think it is likely that the firmware version is causing this issue. Which version are you running on your WRX? In version 4.8.0 some changes were made: Quote Link to comment Share on other sites More sharing options...
weathermon Posted January 12, 2016 Author Report Share Posted January 12, 2016 Hey Scott,Yeah I'm thinking firmware bug as well - my mate wanted to check first to see if it might have just been a setting possibly. It's running V4.7.1 so will def update the firmware when available next. I'll let you know if it fixes the issue!Cheers, Mike Quote Link to comment Share on other sites More sharing options...
weathermon Posted January 17, 2016 Author Report Share Posted January 17, 2016 Hi Scott,We updated the ECU flash to the latest and left the calibration at 260 - I can report 100% working now, so definitely was a glitch in the software somewhere.Cheers, Mike Quote Link to comment Share on other sites More sharing options...
Scott Posted January 17, 2016 Report Share Posted January 17, 2016 Good news that the firmware update sorted the issue. Quote Link to comment Share on other sites More sharing options...
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