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CamB last won the day on January 4 2018

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  1. @Leonv33 - sorry, you are quite right. Frequency in to Clock and then the Data and Q5 should be tied together. Will edit my earlier post.
  2. CamB

    programmable logic

    I have a problem similar to this too. I sort of solved it by reducing the number of parameters being transmitted and the update speed, then doing a lot of reading before writing to the screen. Not very satisfactory. I'm pretty sure I am just going to buy a plex usdm one day instead.
  3. I've been advised that the CAN lambda will manage the heater by using the ECUs running information, so should be connected as per the wiring diagram. Would be worth waiting until someone from Link confirms or you should try the tech support help line.
  4. Thanks Adam. Mine is twin plug and ITB and I was interested as that one you posted is only slightly higher than I would have expected for twin plug (max 28* under load) but slightly more conservative than I would have expected for single plug. I've just been collecting data points. Either way I will get mine tuned properly - I've been told that MBT is pretty clear on a twin plug 911 and occurs at quite low advance.
  5. @Adamw - do you know if that is a table from a twin plug or single plug 911?
  6. There are quite specific instructions in the manual - worth reading all of it as it covers: motor +/- a relay to provide the ECU with power for the above an Aux so the ECU controls the relay plus the accelerator sensor and TPS wiring https://www.vi-pec.com/techdata/ecu-manuals-v-series/vi-pec-manual.pdf
  7. Did you re-check base timing after swapping polarity?
  8. > I understand that pin Q5 is the ÷10 output that gets fed into the ECU's DI input. Correct but also tied to Pin 1 - data > +5VDC from ECU sensor power supply goes to which pin on the IC? VDD - pin 16 > Turbo speed sensor original output goes to what pin on the IC? D = Data - pin 1 Clock - pin 14 > Does the IC need power earth or sensor earth fed into it and on what pin? I'd ground to chassis, all the ones shown (Jam 1-5 and R for reset) and VSS (edited as wrong...)
  9. CamB

    ID1000's I'm confused

    The most interesting thing for me is that short pulse adder changes depending on your fuel pressure. I'd already worked this out playing with the Motec data, but useful to see it from a vendor. Couldn't tell you why the short pulse is different between the two ID sets though. If you press Alt-F11 in Excel you can unhide the worksheet with the data and have a look but its just a hardcoded table of short pulse by pressure.
  10. That will depend on whether there is an output from the ECU which is useful to you, and it may rapidly use up outputs too. A better idea would be to try and get CANBUS working (adding a CAN shield to Arduino, or I think there are other Arduino-like options with CANBUS built in). I suspect this will give you a better outcome.
  11. I believe it is "Second comms port CAN1 / RS232" (RS232 not for PC Link, for a serial stream).
  12. Would also be nice if you had a way to measure load (MAP or TPS, although I am not sure how feasible either is with Webers as I've never looked into it - must be options) for ignition mapping.
  13. Was just reading this the other day - the manual says it is required (page 12): http://www.linkecu.com/wp-content/uploads/2016/10/CAN-Lambda.pdf
  14. CamB

    Can protocol sample

    @Davidv - thanks, I should have looked more closely at that! It was easy enough to change the code (I ended up using a custom stream rather than the generic one as I had trouble capturing all the incoming CAN messages if there were too many).
  15. CamB

    Can protocol sample

    From my messing around with it, all the raw data in the Generic stream is the second parameter + 256 * the first parameter (in the pair). Interestingly when you set a custom stream the order is reversed... Is there a reason not to just use the standard convention? (I guess efficient coding?)
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