simonjob Posted October 12, 2020 Report Share Posted October 12, 2020 hey all i have a s14 silvia running a monsoon with a 300zx box have the gearbox 2 wire vss speed sensor connected to digital 2 and not sure how to configure it to get it to work correctly and also not sure how to get it to send the data to my aim dash. any help would be good. the ecu is reading that the sensor is imputing data. have attached file as well jasmac tune 2020.20.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 12, 2020 Report Share Posted October 12, 2020 If the ECU is correctly showing speed when the car is moving then there should be no further config needed. What is not working? Quote Link to comment Share on other sites More sharing options...
simonjob Posted October 12, 2020 Author Report Share Posted October 12, 2020 yeah it is reading speed but its not the correct speed just moving slowly it reading 100kph is there a was to work out that calibration to put in there as i cant drive the car on the road as it a dedicated race car. and cant get it to transmit via can to the dash ether Quote Link to comment Share on other sites More sharing options...
Vaughan Posted October 12, 2020 Report Share Posted October 12, 2020 My Stagea uses a calibration value of 530 if that helps, RSFourS box (R33 GTR) 4.33 diffs I believe and 225/55R17s with the speed signal coming straight from the box. It is possible to calculate it all out but will be difficult with a VR sensor as you can't easily count the number of teeth per rotation. From the help manual, you may be able to correct for diff ratio Quote Link to comment Share on other sites More sharing options...
simonjob Posted October 12, 2020 Author Report Share Posted October 12, 2020 ok i may have to see when i get to the track and use a phone gps speed app and set it that way. thanks for the help if and one else can shead some light would be good. as i want to se the gear detection up in the link c heers Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 12, 2020 Report Share Posted October 12, 2020 For the speed calibration you could jack the back wheels up, hold it at say 2000RPM in 4th gear and note down speed displayed in PC Link. Then go to something like this: https://spicerparts.com/calc/transratio/index.html to calculate the actual speed that should have been displayed at 2000RPM. Then you can multiply the DI calibration in the ECU by the same factor as your displayed vs actual speed difference. For the speed in the dash, are you looking at the LF wheel speed channel? Quote Link to comment Share on other sites More sharing options...
metric1600 Posted February 20, 2022 Report Share Posted February 20, 2022 Dragging up an old thread However have a similar issue and I’m sure it’s an easy fix Have speed signal to the Ecu and ratio well down, can see 600km/h in the G4x as speed when I spin the wheel. *Connected to DI2 as LF wheel speed (tried LR wheel speed as well) However I can’t manage to get the value to show on the Microtech LTC display via the Canbus. / Have KPH showing on the LTC unit. Any ideas? Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 20, 2022 Report Share Posted February 20, 2022 I would expect it probably uses driven or non-driven wheel speed, rather than an individual wheel, but not sure which. Go to >chassis and Body>speed sources and set both driven and non-driven sources to your LF wheel speed and see if that solves it. Quote Link to comment Share on other sites More sharing options...
metric1600 Posted February 20, 2022 Report Share Posted February 20, 2022 Thanks Adam worked at treat. Dont think the dash liked seeing 600km/h but it will get over it.. Cheers Quote Link to comment Share on other sites More sharing options...
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