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Nettlez

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Everything posted by Nettlez

  1. Nettlez

    Egt wastegate trim

    Pretty much as the title says, is it possible to create a wastegate trim based on an input from a egt sensor?
  2. So I have been setting up the advanced open loop wastegate values for multiple boost targets (to then go closed loop) but wondering how accurate you should expect to get on the road for just a road car before moving onto closed loop? I currently have them around +/- 5kpa
  3. Thanks for the help chaps, I did all of the above to end up annoyingly with the same result. Ended up getting another idle control valve and that seems to have sorted it, even though it check out electrically ok so very strange. Now with the ignition more retarded on the overrun it does make quite a few more pops
  4. So the car has started doing something weird where the first six seconds or so the engine revs really high on cold start with no throttle input for the first six seconds or so. I would be grateful if someone could look over the log and map to check I haven't done something wrong please. Other than that I'm presuming something must be wrong with the idle control valve log http://s000.tinyupload.com/index.php?file_id=84307726431083782805 map http://s000.tinyupload.com/index.php?file_id=36513187506628764503
  5. So with the g4+ running in closed loop idle control there is an option for hold step. From the information in the help file I still don’t understand what this does? What does it do? What is an example of a hold mode? Also what do the values in the startup step table represent? Is it a percentage of base position table or a multiplier?
  6. Nettlez

    RPM errors

    Thanks Simon, I will take some more logs at higher rpm I was comparing my engine rpm and engine speed roc to the one in the trigger error webinar and in the log he shows his roc barely goes above 250 yet mine is going way over 500 and my rpm curve is no way near as smooth? Which he mentions means I have trigger issues??
  7. Nettlez

    RPM errors

    sorry, that was the log how I had it set before to get around the issue with the triggers being at the same time. Here's a current one at 2k http://s000.tinyupload.com/index.php?file_id=05145648404220917506
  8. Nettlez

    RPM errors

    So I have an issue with the RPM on the log jumping around at higher revs. The engine is a bmw m50 turbo and the original crank trigger wheels gap used to line up almost bang inline with the cam trigger so I have changed the crank trigger wheel for another to move the two apart, I hoped this would solve my issue but it hasn't. The two triggers are both vr type sensors. I have tried to setup my arming thresholds to suit a third of the voltage but anything past 2000rpm I need a value greater than 7 but the link g4+ ecu wont let me put a value in greater than 7. I have noticed there is
  9. Nettlez

    Wheel Speed

    So I have added two wheel speed inputs to the ecu. I have added non driven from the front wheels via the standard bmw e30 vr type wheel speed sensor with a calibration figure of 2350 to get the speed to be correct. Then the driven wheel speed sensor from the rear wheels via the differential sensor which then goes the instrument cluster which then as a digital output meant for the cruise control which is where I have wired the ecu too with a cal figure of 445. The driven wheel speed sensor works fine, reads wheel speed nice and low but the front one only reads as low as 24kph for some reas
  10. Nettlez

    Timer engine fan

    Worked a treat, thanks for that
  11. Nettlez

    Timer engine fan

    So I have the engine fan setup being controlled by the ecu via ect. I was wondering if it would be possible to use a timer to stop the fan coming on when the cars just started? Currently if I turn the car off when it’s a few degrees off the fan activation set point and leave it for a few minutes then come back and start the car the fan kicks in straight away as the ect is above the activation set point as it’s heat soaked. But within say 10 seconds the water has been pumped round and it’s below the set point so it goes off.
  12. Nettlez

    Stalling Issue

    Just noticed my idle ignition control was set to 2000, should this be 1400 so it’s online with the idle speed control total?
  13. Here's a scope at 2k
  14. So I have done a log of the car running but its recorded some errors in ignition dwell time. Its normally running around 3.5ms but I have a half an hour log which shows four occasions of really long ignition dwell times, some as long as 100ms. What could be causing this issue? Is this a problem? Here's the log http://s000.tinyupload.com/index.php?file_id=66416819174199940320 Heres the map http://s000.tinyupload.com/index.php?file_id=91565145388537459141
  15. Right ok, I do have the ability to check the pressure sensor for calibration but I guess it doesn't matter if it reads spot on, just so long as the repeatability is good as that's what your actually monitoring. So just to clarify what I am looking for is as the map reading goes up I am looking for the fuel pressure reading to go up the same? So for example if at tick over map is 50kpa and fuel is reading 240kpa then when map is 150 the fuel should be around 340kpa? If this is right how close should it be when varying? Or another way of working it out would be fuel pressure minus mgp
  16. So I have an issue with my fuel pressure no rising linearly with boost pressure. I am monitoring the fuel pressure with an AEM 100psi brass pressure sensor but I have since noticed they have a tolerance of plus or minus 3%, so 3 psi is 20kpa so that's a total tolerance of 40kpa. Does anyone have experience in using a bass one and noticed they aren't very accurate? I have attached a log, the fuel pressure is always out around 40kpa but then does vary more than this as well. So I am wondering if the fuel pressure sensor is just around 40kpa out (calibration wise) and then is varying by its
  17. Hi Adam

    Looking for a new tuner, are you a professional tuner in the uk?

    Thanks Rafe

  18. Nettlez

    Stalling Issue

    So just to clarify for simple me, by logging idle % you mean idle position in the log parameter list? Also by saying my base number for 90 degrees should be 35 does that mean that anything above that should also be 35? So 35 at 100 degrees?
  19. Nettlez

    Stalling Issue

    Yeah I have done what Adam put and took it for a couple of drives and it seems loads better with just those few changes, it hasn’t stalled while driving. It been stalling on start up though, I have been reviving it a little for like 10 seconds then it’s fine. No I haven’t done the open loop idle tuning process, Im just running the map from when it was last time on the old engine, I will have to look into what you have said, fingers crossed it will improve it further with these changes!
  20. Nettlez

    Stalling Issue

    Thanks for the info I will try adjusting it. Yeah I uploaded the wrong log sorry, heres the right one, it nearly stalls then actually does stall http://s000.tinyupload.com/index.php?file_id=15704473844804950514 Also heres a link to a scope at idle http://s000.tinyupload.com/index.php?file_id=05225190735803187576 Thanks
  21. Nettlez

    Stalling Issue

    I have got an issue where the engine is stalling when coming to a junction, slow small drop in rpm and the engine just cuts out, it seems better when cold. The map is from my old engine which was a 2.8 m50 engine, this is now a forged 3.15 m50 engine with mainly a different intake cam, lower compression ratio and slightly bigger turbo I have tried upping the anti stall gain table for when hot considerably but no joy, I have also upped the other two idle gain tables a little but still no joy Any help would be greatly appreciated, I am currently trying to run the engine in as its
  22. Nettlez

    Crank Timing

    Yeah it has a tdc so 0 degrees mark so I have marked that underneath onto the sump and wheel so I can see it with the light when it’s running. So I was trying to figure out how to mark 10 degrees on the wheel so I can make that mark on the wheel too so I could check it with it running rather than just cranking?
  23. Nettlez

    Crank Timing

    Just a quick one, so I have just got the car together with its new engine but it’s not running right, hunting on idle and stalling when the revs drop. It’s got a 3.0 crank (was a 2.8) and 1.5mm over bore making it’s a 3.15l, exhaust cam on the intake. So I want to check the base timing but I seem to remember it being a bit of a pain to do a zero. So it’s a Bmw m50nv engine and the crank settings are 60 missing 2, so does this mean that each divot on the wheel equates to 6 degrees? So an easier number to used could be 12 so two divots before?
  24. I can report back it works fine with the new firmware. That 25% idle park step up made me panic though haha
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