Jump to content


  • Content Count

  • Joined

  • Last visited

  • Days Won


Everything posted by Adamw

  1. Dan, Normally with a "4D" mapped ITB turbo engine like yours you would find the bulk of the "tune" comes from the main TPS/RPM fuel table (fuel table 1) and the 4D map usually only needs to make very small corrections to the main table as things like back pressure and turbo efficiency start to move outside "normal". So in my experience the 4D table (Fuel table 2 in your case) would normally be just about all zeros with only small numbers in the extremes such as high boost/RPM regions. Yours is completely different to what I would expect with corrections applied to just about the full table and up to 73% added! Your problem area seems to be mostly where the Fuel table two starts to apply corrections - you kind of have two tables fighting each other. So although we can possibly improve the situation by tweaking this "fuel table 2", really its been done wrong and its never going to work great like this. As for how the mapper has got it wrong I am not sure, perhaps he never got Table 1 right before adding Table 2? or perhaps its something like your MAP sensor calibration or fuel pressure that was having an influence during tuning? Personally I would be starting the fuel maps from scratch but if you are happy to stick with the odd setup and its really only the flat spot that you are worried about then I can possibly help you tweak it.
  2. Here's your present MAP limit table: Perhaps you are confusing Absolute and Gauge pressure. I'll let you wiki the difference. Note the A in MAP means "Absolute". So at sea level a MAP of 160Kpa would be about 60Kpa (or 8.8Psi) "Boost" or "gauge" pressure. Basically you subtract atmosphere pressure (~100Kpa) from Absolute to get to gauge pressure.
  3. Tps issues would likely show in a log. Do you know how to log? Pm me if not and I will give some help. Actually remembered this: https://www.youtube.com/watch?v=_P1LRANeO4A
  4. Adamw

    boost spike

    So did you try increasing those highlighted cells by 10%? You have to do a store after you have made changes too. (F4 key).
  5. Hi Dan, Can you do a log? I don't have access to the old software today so I'll take a look at your map in a bit more detail tomorrow. The spike in your fuel map is certainly pretty odd and not typical. Does the engine go lean in the same RPM regardless of if you free rev it with no load Vs driving with significant load? The example smooth map that you have posted uses MAP as load whereas yours uses TPS so that is not particularly relevant. In general a TPS fuel table is usually pretty flat above 50% throttle so if we imagine yours without the spike it has roughly correct shape. As for the super smooth example from the other mapper - in my experience you wont often get a fuel map as smooth as that if the engine has been mapped properly steady state - there is always intake and exhaust resonance that will create small peaks and valleys relative to RPM so that one looks a little fudged to me. You certainly shouldn't see the Rocky mountains like yours but some ups and downs are normal.
  6. Hi Matt. A new dwell table for you is attached. Save this to your desktop, then right click on your existing dwell table then go Import/Export>import from file and choose this new table. This dwell table is still conservative for these coils so you have got some head room to crank them up a little more later if you ever have spark issues but I doubt you will. Your injector settings are all good. I had a quick look over the rest of your tune file, didn't notice any major issues. Only comments; You have an IAT sensor setup but you have IAT fuel trim turned off. I suggest you copy these settings out of one of the link Skyline base maps. MAP limit is set quite low - you will only get about 8psi boost before that starts to cut. RPM limit is set quite low. Ignition Dwell Control (ms).lte
  7. Rat, not really. If you connect it the wrong way it will work backwards - i.e. turn CCW to increase boost. So you can correct that in the soft ware or just swap some wires.
  8. Adamw

    boost spike

    The setting you are looking for is found under Engine Protection>MAP Limit Table 1. It will most likely look something like below. Try increasing the MAP values that I have highlighted by about 10%.
  9. Adamw

    OEM CAN dash setup

    Thanks, that pretty much confirmed my basic understanding. It was my assumption that GASH & GASL was a fuel level measurement that was not making sense to me so your suggestion that it might be fuel consumption would fit better.
  10. Adamw

    OEM CAN dash setup

    Scott, I haven't yet needed to learn much about CAN so for my own learning I'm curious about the above example... I see that in the message ID201 there is RPM, speed & fuel level? (and probably other stuff we cant see). Would it be normal for all the data in one message ID to come from one device (lets say the engine ECU) or can a message be generated by multiple devices all adding data to the same message ID (for instance eng ecu and BCM all add data to that same ID). It seems strange to have fuel level on the same message as RPM? I should probably google it but since you're on a roll...
  11. Yes of course. Some of the later RB's already have a factory one connected so you may not need to do anything. If you don't have a factory one then you can connect a MAP sensor to the old MAF wire or there are a couple of spare AN inputs on the ECU header that you can use.
  12. I'm not sure I understand your question well but hopefully this will answer it: Although you can use a MAF if you really want to, most would normally remove the MAF and use a MAP instead. You can mount the map sensor in the cabin etc if you want it hidden.
  13. Yes all aux outputs must be fed from a source that is switched with ignition. So you will need to move "30" to a relay or something that is only live with ign on. I'm not sure about your store issue since I haven't seen that myself before but it could well be related to the same backfeeding issue through the fan aux keeping the ECU partially alive.
  14. Hi Tony, Most settings look ok to me. You might have to post a log so we can see what's going on. Your TPS lockout is set to 1% so make sure TPS at idle is 0%.
  15. Hi Pavlo, No the knock window cannot be fixed in relation to TDC within Link's current knock control implementation, the window position follows your ignition timing. In the couple of engines that I have seen running with cylinder pressure instrumentation I can say that the detonation position does usually have some relation to the ignition event so I think this strategy will probably work better than having a fixed knock window position like some other ECU's do. There maybe some odd applications that I haven't considered though - can you explain why you think you need a fixed knock window position? To give an example of how it works now, If we have window start set to 10 and window length is set to 50; Lets say at 3000RPM & 200KPa your ignition timing is 30°BTDC, then the knock window would be active 20BTDC to 30ATDC. Now we increase engine speed to 5000RPM & 400Kpa and your ignition timing in the table is now 15, your knock window will be 5BTDC to 45ATDC.
  16. Adamw

    Injectors not firing

    Further to Jonny's comment, you can easily verify your wiring using the injector test function. With ECU connected to laptop and ignition turned on, fuel pump turned off, Go to Fuel>Fuel Setup>Injector test. Set it to Inj 1 (2ms 10Hz), you should hear No 1 injector clicking.
  17. Hi Anthony, I took a quick look over your settings, most of it looks like reasonable starting points. I will make a couple of suggestions though... Normally I disable gear cut for first outing, do a few laps using the clutch to shift whilst logging all gear cut variables. Then you can look at data and check that gear position sensor is working correctly and you will have some good data on how much shift force is required to change gear. A couple of other comments; To me your upshift force is probably too high, more commonly around 80N. Your torque re-introduction is too long - normally if using barrel position as the shift end event this will be much smaller numbers ~ 20ms. If you haven't already, you should download Motec tech note CTN0004. Some of their terminology is different to link, but it gives good background on how to tune the gear cut function from logging. I didn't look through much of your .pclr but a couple of things jumped out right away - Your fuel map and lambda target table are pretty odd? You could do with decreasing the master fuel to get better numbers in your fuel map. You've got charge temp table turned on but you don't have an IAT sensor assigned so that's not going to work.
  18. Adamw

    Wideband O2

    Hi Anthony, Yes the channel name is now "Lambda", and the default unit is Lambda (makes more sense for flex fuel etc). You can change unit to AFR under Options>units>Options.
  19. I have never personally done it with a vipec but you can upgrade a G4 tune file to a G4+ so I assume the same will work for i88. The secret is you need to be connected to a live/powered up ECU, before the software will allow you to open an old format map. So, with Laptop connected to ECU & ignition/power on, open new G4+ software. Then go to file>open and browse for your old V88 tune file, it should open up and convert to i88 file, you can then save it with a new name.
  20. Check video: Sorry about format cell phone does something funky with hyperlinks. Click the "reply to table graph view" should take you to the video
  21. On a stock road going evo there are no spare digital inputs left on the ECU connector so you have to use the Expansion connector. However since yours is a "race car" I guess you no longer have air conditioning fitted? If that assumption is correct then you could connect your Antilag enable switch to one of the DI's that used to be associated with A/C. ECU pinout is in the help file, you can possibly use DI1 on pin 45 or DI5 on pin 11.
  22. I agree, this info should be in the help file or documented somewhere, I always need to search it... Try this: http://forums.linkecu.com/index.php?/topic/1869-where-is-serial-connection/&do=findComment&comment=24947
  23. I cant find any info on google about what the std Audi AEW trigger pattern looks like but I think to run sequential & VVT and use that cam trigger you will have to use one of the OEM type trigger modes (not multitooth/missing). Does that engine normally have 60-2 crank wheel? If both crank and cam trigger are stock then the Audi 4.2V8 trigger mode may work? If the crank trigger was not originally 60-2 then I think you will have to modify the cam wheel or run batch fire/wasted spark. I'm sure the Link techs will give better advice since they should have access to more info of the OEM modes. Cool project BTW, running ITB's?.
  24. Adamw

    AFR log

    Christian, Sorry I didn't have access to the old G4 software yesterday. I just took a look at your data and map now. So ignore the odd wideband behaviour for the first 25 seconds or so, this is just the probe warming up and stabilising. The afr does follow duty cycle well so it appears your wiring is correct and the probe is working. It is reading quite lean at idle and probably not believable so that could be something like a slight misfire or air leak or perhaps it is just not idling well and has poor combustion. It appears to improve above idle speed and give believable numbers.
  25. Adamw

    Adjustable launch control

    Alex, instead of setting the Analog input up as "Voltage 0-5V" as I did in the example above, you could set it up as "GP Input", label it "Launch RPM" and assign a Cal table. Your cal table will be Voltage vs RPM. You can then set up your LC table with "Launch RPM" on one axis (instead of voltage). Your analog input should now be logged as RPM instead of voltage. I can post some screenshots later if you cant work it out from these instructions.
  • Create New...