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Davidv

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Everything posted by Davidv

  1. Hey, Just to share some experiences. My preconception was that there would be a noticable difference between MAF and MAP, at low load/cruising etc. I got my car running with a MAP sensor first, then setup a new table as MAF also. To be honest when I datalogged both, I didnt see any areas of finer resolution with the MAF. The only notable area of difference I could see is when you slam the throttle shut, the MAF sensor will show a steady reading of air while the RPM drops, but the MAP sensor will show a lower vaccum at higher RPM and then vaccum decreasing slightly as the RPM drops. But if you've got decel fuel cut turned on, that's an area where there's zero fuel going in anyway. Having the MAF sensor connected (datlogging only) was super handy for tuning VVTI angles at WOT and a few other things, but in terms of how the car runs after trying out both I wouldnt be able to pick the difference in a blind test. A MAF sensor might show an advantage if you've got a ram air type setup, and barometric pressure correction comes from the ECU rather than the area of varying pressure that the engine is drawing the air from. (Very minor difference) But again if you've got closed loop + a wideband this will be compensated for regardless, in terms of your emissions. In the end my conclusion was that the MAF sensor is not worth the headache of calibrating, and then reliability issues if you end up getting an air intake leak etc that throws off all of the readings.
  2. I've tried combinations of: -Adjusting the values in the tables -Adjusting the table axis numbers -Changing the values to Volts or Ohms / Celcius / Farenheit / etc (with both minor and major changes, like setting values to 5 or 999 or whatever, makes no change) Then combinations of: -Storing to ECU -Storing/Saving Storing/saving and then power cycle. None of the above options change the temp values at all. The only change to indicated temp is if I adjust which cal table it's pointing to, or select a different pullup resistor. Which updates straight away even without a store or whatever. If I select Cal table 7 then it seems 'almost' correct, but it seems to be pulling info from somewhere other than the values in the table. P.S. I am using the latest firmware/PClink versions, but I had this same thing on previous version too.
  3. Hey sorry for late reply, seems the Mixture Map thing is fine now. Thanks
  4. Hi, I've got a Toyota IAT sensor wired to Analogue Temp Input 2. So I set Analogue Temp 2 to IAT. I set the the sensor type to Cal table (any of the selectable ones) and set Ohms/Degrees celcius as the input/output values. However editing the Cal tables makes no difference to the indicated temperature. So for example: I select cal table 3, it will show (for example) 80 degrees ambient Select cal table 7, it will show 35 degrees ambient. But if I go to either of these cal tables, no matter what I change the values to, it doesnt change anything. The only way the values seem to adjust is either by changing the pullup resistor or changing to a different table's default info. Any ideas? It's definitely wired in properly, because the air temp shows that it changes with time, it's just that the scale is wrong and doesnt seem to be correctable.
  5. Is it possible to add grams/second as a load value for the staged injection? Currently the options are MAP, MGP or TPS. As attached. If I can set it to be MAF values instead, then I can acheive exactly what I want without the need for a table controlling it.
  6. Hey, Under: G4+ ECU Tuning Functions > Chassis and Body > and then "ECU Calculated Gear Ratio Procedure" It says: 3. Display the Runtime Values area of PCLink (Press Ctrl+F5), then select the tab labelled 'Digital Inputs'.  This will display the Gear Ratio Status (near the right hand side). However it should say to select the tab called 'Misc' not digital inputs. Not a big deal just FYI for next update to the documentation. Also one other thing. I'm using Fuel table 2, and have the mixture map set to show table 2 also. However when I first open it after turning the laptop on it shows Table 1, until I go to properties (which shows table 2 selected) and then select OK, then table 2 shows up. If that makes sense...
  7. Just for interest's sake. Here's an article of someone doing the same thing with a Motec for their NA application. It shows their map for injector transitioning about half way down the page. You can see how gradually phasing in/out across the rpm range is beneficial rather than % inboard and outboard at WOT. http://www.usrallyteam.com/content/tech/injector_staging_article.pdf
  8. Ahhh bummer I was hoping it would work a little differently to that. Any chance of the possibility of a 2D table for it in the future? Seems like the easiest way to set it up. I guess it's only NA applications where what I'm trying to acheive matters, which probably makes it 0.1% of people who used staged injection. cool I'll give it a go with that first method and RPM lockout and see how it goes, then if need be try auxillary injection. Thanks for the advice.
  9. Okay I had a look and set that up... looks good. One other quick question though. For the staged injection, it lets me set the load as either TPS MAP or MGP. However once I've set that it just shows a single row load table where I can adjust the % of outboard injectors for that load value. However for my application I'm wanting to only start using the outboard injectors above 4-5000rpm, rather than blanketly at 100kpa or whatever. Is there a way to get a load vs rpm table? or just rpm table perhaps?
  10. Aahh, awesome! Â Thanks Scott.
  11. Hey, I see that I can set a start or end time for injector timing, as a global value. However I'm wondering if there's a way I can adjust the injector timing based on either just an RPM scale, or RPM vs TPS or MAP. Reason I ask is that my engine has VVTI, and I'm using some outboard injectors on an NA setup with the idea of firing the outboard injectors at high rpm in time with the induction events to avoid standoff in the runners. But since I'm advancing/retarding the cam over 40 degrees through the rpm range, it makes sense that I'd need to advance or retard the injector timing alongside this. Is this doable? Thanks
  12. hey Scott, That works once - as in, if I plug in the ECU, swap tacho output (then menu pops up) then change back to Aux output 4, the tacho works and with the amended settings. But then if the ECU shuts off and turns back on, the tacho doesnt work at all. Unless I go back into the menu and unassign it as tacho and reassign it. (And yes I did make sure to store to ECU etc) It's not a drama, no big deal! But just to let you know in case that helps with bug hunting or whatever. Thanks
  13. Okay I've just done a fresh install of the latest version on a different PC. Same problem, just shows tacho and label. This is when opening any of the basemaps, it's not specific to my PC or my tune. Both PCs running Windows 7 and both show tacho options fine with previous build. Unless I'm missing something obvious!
  14. I definitely dont, plus this happens on any basemap that I load. Not just one I run on the engine. Are you able to show me what it should look like? I've uninstalled and reinstalled, definitely using latest version but same problem each time.
  15. Hmmm okay I've had another look but still cant find it. Aree you meaning down the bottom as circled here? Â Because Tacho doesnt show up on that list. Â And I cant see anywhere else it shows. Â http://www.iforce.co.nz/View.aspx?i=2v0gbh2l.fx0.jpg'>
  16. Ahhh okay thanks! I just wasnt sure where to look. I'll try that tonight.
  17. One other question, On my ECU the VVTI solenoid has two of it's own pins that go directly back to the ECU, and I cant find documentation for what these pins on the ECU did. OCV+ and OCV- Am I correct in thinking it is supposed to be 12v supply to the positive side, and then aux output to the earth side to switch it?
  18. Thanks for the reply Simon, that makes sense. I've had a strange issue though, where when I select some inputs/outputs whatever, it doesnt show up menus that it should. For example, if I select 'Tacho' it will just show the two boxes 'Tacho' and 'Label'. When it should show sweep, multiplier, etc etc. It does this on all of the basemaps included, that I've tested. Any ideas on this one? I get the feeling I've hit a wrong button or something. I've uninstalled and reinstalled with latest version for G4+ but it still does the same thing. I've got an older version of the PClink software on my desktop PC which shows these full menus fine. Anyone come across this before?
  19. Hi there, I'm Running a Beams motor which has a 36-2 crank trigger wheel > Reluctor. Many years ago it had a tooth broken off the crank trigger wheel, which is part of the cambelt pulley. It's nearly impossible to find a replacement one so I had a blob of metal tig'd back on, and filed to shape. Ran fine on the standard ECU from idle to redline since then. However since fitting the link, I've had some problems because it looks as though this one tooth puts out a slightly weaker signal than the others. From memory this tooth was slightly slightly shorter than the others but after testing it ran fine with the standard ECU so didnt worry about it. Since fitting the Link though Initially I had a problem where the motor wouldnt run below 1700rpm, but fixed that by adjusting the arming voltage after seeing that the voltage from that one tooth was lower than the others. However now I cant go above 6000rpm at all, just hits a wall. Tried adjusting filtering and arming settings, but no combination of settings seem to make a difference. Once more it's proving impossible to buy this part on it's own, so I'm looking for some advice on what might be the most practical way to resolve this problem. Thinking: Cut off every 2nd tooth to make it an 18 tooth wheel instead? So it would be an 18-1 wheel? Or I might weld another blob on and reshape the tooth again. Or would it be best to run an external trigger wheel or similar... Any advice appreciated.
  20. Hi, Just wiring in a G4+ Xtreme into a Toyota 3SGE Beams engine. It's a slightly different version to the Altezza engine, it's from an MR2. So it doesnt have electronic throttle body and there are a few other minor differences. Most of the differences though, can be dealt with by just turning off features that are in the Altezza basemap that's provided. The Altezza engine basemap that comes with PClink though is for the plugin version, is this basemap usable for the wire in version too? My inputs/outputs are in a different order, and obviously I dont have the onboard map sensor so the fuel and ignition tables will need revising to suit a 1 bar map sensor that I'm planning to use. But it seems like I could save some time by having the cold idle, rev limits, sensor types etc etc copied from the Altezza basemap. So I'm wondering if there's an easy way to acheive this, or whether it's just best to manually input the data into all of the tables. Not much of a drama just seems a little tedious if I could make use of the other setup instead. Apologies if there's an obvious answer, I havent finished the wiring yet so have only used PClink while it's not connected. Also, I'm about 80% through wiring up the sensors for the engine loom and I've got a few left over inputs/outputs on the first plug, and I havent used any of the inputs on the second. Which is perfect as the reason for getting the Xtreme is that I wanted these extra for datalogging purposes, switches and so on which I will be implementing later once the basics are sorted. My question though, is what is the scope of what the digital inputs can acheive? As before my imagination runs too wild I'm trying to get an idea of exactly what I can do with them. Do they essentially record on/off or inputs from a 5v square wave or similar? Do they all need to be 5v input? Digitial input seems like a potentially broad term so I just want to make sure I understand their capability before starting on any side projects to implement them.  Thanks David
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