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  1. J

    Help to Design EGR Valve Simulator- Cheater

    Just to share that he valve's coil feed frequency is 137.7 Hz. I had to disconnect the emulator and use the valve as I got a flat spot at around 2200RPM, it was quite annoying so I plugged the valve back and all is fine. Can't be bothered at the moment to sort out the emulator.
  2. J

    Help to Design EGR Valve Simulator- Cheater

    Remap Remap done today, all went fine and engine performs superb, - More power & torque, (from 82bhp to 110bhp approx) - Sharper throttle response. -Virtually no smoke, -Less smelly exhaust -Better engine idle. ERG valve could not be forced shut this time during remap, doesn't matter...
  3. J

    Help to Design EGR Valve Simulator- Cheater

    :) My engine as with most these days is controlled by an electronic brain called the ECU, sort of a simple computer, by replacing the manufacturer's standard software many benefits can be achieved within the safe operating ranges of the engine's design. More BHP, torque and better MPG, it's...
  4. J

    Help to Design EGR Valve Simulator- Cheater

    Dunno if the guy will let me :)
  5. J

    Help to Design EGR Valve Simulator- Cheater

    remap ECU remap booked for next Thursday, :D (with EGR valve operation delete included)
  6. J

    Help to Design EGR Valve Simulator- Cheater

    Hi there, I'm waiting to receive this.. apparently it's able to measure Hz http://www.ebay.co.uk/itm/230746727616?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_2848wt_1270 -Yes there are tuning boxes to increase BHP available, but I've opted for a professional ECU remap, it's...
  7. J

    Help to Design EGR Valve Simulator- Cheater

    Hi, yep the valve was left after the mods, the idea is to get rid of it as it's a bit heavy and I'd rather have a solid state circuit instead. See my mods thread here http://www.renaultforums.co.uk/showthread.php?t=125843 IMO EGR on diesels is a messy business, these valves are a pain and...
  8. J

    Help to Design EGR Valve Simulator- Cheater

    Hi, Just measured. REAL VALVE; . -Ground to pin 5 @ idle=9.6v average accelerating (very..very short peaks of 13v flashed on the meter's LCD), then 9.5v average -Pin 4 to pin6 same results. Pin 6 @ ilde 1.48v, accelerating peaks at 1.6v (While driving pin 6 returns up to 1.88v approx)...
  9. J

    Help to Design EGR Valve Simulator- Cheater

    With the real valve connected, engine at idle unless otherwise stated and @ normal running temp. Car Ground to: 1= 14.2v 2= 5v 4= 0.01v 5= 9.5v 6= 1.5v Tapping At Valve Leads; Pins 1+5= 4.4v (pin 1 shows as the possitive on my meter) Pins 2+4= 5v (pin 2 shows as the...
  10. J

    Help to Design EGR Valve Simulator- Cheater

    Tell me what you need and I can do here, let's see if we can get this perfected :) even if it means building another one.. Just for the sake of it, as with the ECU remap with EGR delete this one might suffice, but would be good to get the simulator spot on so others can use it too.
  11. J

    Help to Design EGR Valve Simulator- Cheater

    ECU might interpret this low voltage and lack of increase as EGR rate too low, might not be a bad thing after all. yep tomorrow I might do some measuring, Got a remap coming soon! yeppee :D
  12. J

    Help to Design EGR Valve Simulator- Cheater

    Thank you! -Circuit finished -Now is protected in black heat shrink tubing and provisionally fitted in the car. -Plugged it today and no dash warning, good I thought! -Plugged my OBD gear and saw live data, looked ok as the ECU seem happy to see 1.3v at pin 6. -Accelerating made voltage...
  13. J

    Help to Design EGR Valve Simulator- Cheater

    Got all the bits today :) Hoping I'll have time tomorrow to assemble it.
  14. J

    Help to Design EGR Valve Simulator- Cheater

    I see, Thanks, I hope I can come back for assistance if need be :) I will report how all goes and post pictures etc I'll be making a start maybe Tuesday if I can get the bits locally. Got to walk the dog now..wife says ;)
  15. J

    Help to Design EGR Valve Simulator- Cheater

    Hi there, :) Thank you, Could you tell me what this means please? "It may need to be changed if the ECU objects though" Thanks,
  16. J

    Help to Design EGR Valve Simulator- Cheater

    1- What type capacitor will that have to be? electrolytic? 2- That's right, post 1, that's my valve. 3- If I remember well.. -I used a standard dig multimeter, selected 20v DC & tapped into cables to pins 1 & 5 to check coil voltage whit engine running, I was puzzled to...
  17. J

    Help to Design EGR Valve Simulator- Cheater

    Will do:)
  18. J

    Help to Design EGR Valve Simulator- Cheater

    Thank you. 1-Got some 1N4001 are they any good? 2-" and the one you posted last (P1 = 12V PWM, P5 = GND)" I think that was posted markm, not me 3- Yep, across the coil, i noticed that my multimeter showed the - minus sign (Inverted) polarity while measuring coil and pin 6 (if...
  19. J

    Help to Design EGR Valve Simulator- Cheater

    What transistor do I need to build this? -I get around 4.5v at coil even at idle, measured yesterday, I need to find out why that is. The valve opens even at idle. Maybe it's a dodgy valve but it's pretty new. Maybe the ECU has to force it to open to reach the wiper 1.1v min expected at ECU...
  20. J

    Help to Design EGR Valve Simulator- Cheater

    Don't think there is any need as the valve doesn't do that. The simulator wouldn't need to either. The valve simply opens-closes controlled by the ECU and he is the one making the calculations to do so. At same time the ECU receives feedback from the valve's position sensor (pot) , simple...
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