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tzikis

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  1. tzikis

    Fuel Trim QuickTune

    Thank you @Adamw. I was planning on doing this, but wanted to have a base tune that more or less hits the right AFR across all/most cells, and then enabling Close Loop controll. For what it's worth, I think being able to specify anIndividual Cylinder Fuel Correction Table as a target for the Quick Tune function is a valid feature request that makes sense (and you can already specify a specific Lambda channel as the source). I see no need to do this in a time-consuming and manual way. Is there any chance this could be implemented in PC Link in the future? Is there generally a place where we can suggest features? Thanks, and kudos for the great job \m/
  2. tzikis

    Fuel Trim QuickTune

    Hello everyone, I was just looking for something on PCLink and couldn't find a straightforward way to do what I wanted so I thought I'd ask here. I have a 2-cyl engine, with individual injectors and individual wideband Lambda sensors on each cyl. For *reasons*, each cylinder has slightly, but substantially different VE so I really need to tune them to different values for each cell. From what I've seen so far, the "right" way to do this is to set up sequential injection, and use individual cylinder fuel correction. I've Quick Tuned my engine using Lambda 1 & Fuel Table 1 to meet the AFR/Lambda Target Table. What's weird is that I expected to be able to use Quick Tune and select my Individual Cylinder Fuel Correction Table and Lambda 2 to meet the AFR/Lambda Target Table as well, but I see that I can't do that. I also don't seem to be able to use a different Fuel Table for each cylinder, in order to take advantage of Quick Tune. From what I understand I can't even use Quick Trim with Individual Cylinder Fuel Correction Tables. I was expecting to somehow be able to Quick Tune each cylinder based on each lambda sensor, considering that in Closed Loop Lambda (which was going to be my next step, but after I had set up the engine properly), I can in fact link the injectors into banks and banks into lambda sensors, so I can have each injector track their own lambda sensor. So my question is, is there any way I can quick tune each cylinder based on their own lambda sensor? Any work arounds or suggestions in general? Thanks
  3. Ah, I see. Makes sense, I figured it might have to do with the flywheel diodes. Thanks!
  4. Thanks for the reply @Adamw. I have the G4X Xtreme. So I suppose it's irrelevant. Out of curiosity though, what is it?
  5. Hi everyone, I just noticed an error on my ECU Status, and there's no mention of it on the help page, so I figured I'd reach out here. On my ECU Status page, the Flywheel Supply is listed as ~9.9 (it fluctuates a bit), and it's in red. For reference, the 12V Interrnal supply is 11.56. From what I understand looking at the Parameters, Flywheel Supply is supposed to be red/hard warning if it's above 0V. So my question is first of all, what is that, how come it's such a random voltage, and should I be worried or just change the parameter display? Thank you
  6. Thanks @keizsr. I ended up asking the sensor manufacturer, as you suggested, and they were quite helpful
  7. Thanks @Adamw! Since we already have a hall effect sensor, we'll go with that. In that case we simply don't need the missing tooth area to be half-depth, right?
  8. Good questions. We'll be making a small wheel, i.e. something like 150mm wheel dia. We haven't decided yet whether they teeth will be perpendicular to the shaft or on the face of the wheel. We can do either, but I think we'd prefer the former if all else is the same, because it should be easier to make.
  9. Perfect. Thanks! @Adamwsince I have your attention we'll probably have to create our own trigger wheel for this. Any chance you could point me to info about the suggested dimensions for the teeth etc? We'll be using a hall effect sensor, just to make our life easier and not have to worry about the potential noise issues.
  10. Hey Brad, thanks for the response. Yes, I know, i've set it to cam, i'm just wondering whether this way the ECU will correctly recognize the speed & position across the full 720 degree cycle, with a missing tooth trigger wheel on the cam (and no other input). Cheers!
  11. Hello everyone, I'm setting up our engine's speed and position sensor while I'm waiting for our ECU to arrive, and I wanted to make sure what I'm trying to do is valid. So, I'm trying to set up a "MultiTooth / Missing" setup, where Trigger 1 is on the camshaft*, I have 1 gap, and I intend to use Sync Mode=None on Trigger 2. Now, the documentation says this will provide engine position on 360 degrees instead of 720, but since this is placed on the Camshaft instead of the Crankshaft, and the camshaft rotates once per 720, so we know where the missing tooth is in regards to the 720 degree cycle, this should actually tell the ECU the position within the 720 cycle, right? Thanks! *Our crank and camshaft are very rigidly synced through a gear mechanism so we expect no shift/variation between them.
  12. Ah, interesting idea. I wonder what kind of applications they were targeting and what happened to them
  13. Thanks for the help! Much appreciated. Btw, here's what we're working on https://less-engineering.com/
  14. Hi everyone, I'm considering buying a G4X ECU for a carbureted engine, and I was wondering if that is even possible. I know there will be questions as to why I would want to do this in the first place, so I may as well explain my situation. I work at a company that's building a new general-purpose engine prototype, based on an existing 1st-gen carbureted engine prototype. Our long-term goal is to convert this to a port-injected version, but for now, we need to be able to run the existing carbed version, control ignition, and of course log all the various environmental parameters so that we can then compare them with the next version. So essentially my question is, can I run the G4X with the EFI subsystem disabled, and use the ECU only to control timing based on RPM & MAP/MAF? Thanks
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