Smity42 Posted February 24, 2017 Report Share Posted February 24, 2017 I am currently wiring and setting up my VL Link plugin ECU.I have an AEM RTD EGT (http://aemelectronics.com/files/instructions/30-2050 RTD Temperature Sensor Kit.pdf) wired to AN T4, and entered the calibration table to match the one in the document (Cal Table.png).However, if I set AN T4 to be "RTD EGT", it seems to take the calculated temperature and then multiply it by 10. The picture EGT1.png shows the value with the engine off (cold) and a resitance of about 222R across the sensor, and it is showing 300 degrees. I expected to see about 30deg.After a lot of mucking around I figured out that if I set AN T4 to be "Fuel Temp", or any setting other than "RTD EGT", then it displays the temperature correctly (EGT2.png).However, setting it to "RTD EGT" just seems to multiply the calculated value by 10 for some reason.I have worked around this by dividing the cal table values by 10 (Cal Table 2.png), but I would prefer not to have to do this if I don't have to.Is this x10 functionality by design? Why? I couldn't find anything in the doco about it. Or is it a bug?Secondly, I have a MicroTech LTC display dash connected, and the RTD EGT temperature value does not seem to be sent to it. I expected to see it as "EGT-1". Can this be added in the next firmware version? Or can it be configured using a "Custom CAN Stream" as mentioned in the doco? Any help would be appreciated.Thanks,Martin Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 24, 2017 Report Share Posted February 24, 2017 Hi Martin,It sounds like you might have stumbled upon a bug. I will have a play on the Simulator to confirm when I get a chance but it will probably next week.As for the LTC dash we send out MicroTech's "Automotive CAN protocol V2.0". According to their data sheet, these are the only channels within that stream:So although the G4+ is capable of sending out a custom stream with EGT included that is pointless if the dash is not capable of receiving a custom stream. You will have to direct your stream improvement request to MicroTech. Another option is I see they do also sell a CAN-EGT module that is meant to work with the dash but there is no published info about the CAN protocol it uses - so if you can find out that info then we can probably send EGT data to your dash by duplicating their CAN EGT device message. Quote Link to comment Share on other sites More sharing options...
Smity42 Posted February 25, 2017 Author Report Share Posted February 25, 2017 Thanks Adam,I noticed in the CAN setup "Test Calculator" the RTD EGT only has a resolution of 10deg, presumably to allow the much larger range necessary for exhaust temps. I suspect there is just a "divide by 10" missing from the calculation somewhere.Can I get a copy of the MicroTech "Automotive CAN protocol V2.0" datasheet? The dash seems to be capable of receiving a lot more inputs than those listed, so maybe it is a newer version of the protocol. If I can get the datasheet, I will try to reverse engineer the additional values I want to send (EGT, Oil Temp, etc.). But I can't seem to find this datasheet online.Cheers,Martin Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 1, 2017 Report Share Posted March 1, 2017 Hi Martin,I have had a play around with the RTD EGT input myself now and agree with you that it seems like a bug. I have passed it on to engineering to fix. Quote Link to comment Share on other sites More sharing options...
Smity42 Posted March 1, 2017 Author Report Share Posted March 1, 2017 Thanks Adam! Quote Link to comment Share on other sites More sharing options...
Nick Posted October 10, 2017 Report Share Posted October 10, 2017 Any word on if this bug has been sorted? I'm having the exact same problems with my g4+ extreme and rtd egt sensor Quote Link to comment Share on other sites More sharing options...
Smity42 Posted October 14, 2017 Author Report Share Posted October 14, 2017 Hi Nick - No update that I have heard. I still have my Cal table divided by 10 as a workaround. Cheers, Martin Quote Link to comment Share on other sites More sharing options...
MikeGTR33 Posted March 10, 2019 Report Share Posted March 10, 2019 Hi! any news on this issue? Quote Link to comment Share on other sites More sharing options...
MikeGTR33 Posted March 14, 2019 Report Share Posted March 14, 2019 It works! Quote Link to comment Share on other sites More sharing options...
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