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ECMlink Please Help With Idle

Posted by marcman804, Feb 19, 2020

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  1. marcman804

    marcman804 Proven Member

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    Joined Mar 5, 2005
    Cumberland, Virginia
    I really need help with getting my idle dialed in as its very sporadic. Mods are FIC 1050cc injectors, Walbro 450, Evo III intake mani, 1g throttle body, FP Black, FP exhaust mani, Comp 272 cams, Manley valve springs. Ive attached a log of the idle. Let me know if there are any other values I need to record as well. Thanks so much.
     

    Attached Files:

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  2. ishnish

    ishnish Proven Member

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    Joined Jun 26, 2011
    Modesto, California
    Can't view the log here at work but I'm gonna ask the question that probably everyone will ask first: Have you done a boost leak test on the car? That's a HUGE step.

    Also, are you running the stock FIAV? As in, how it normally runs? Or is it blocked off? Bypassed?
     

    Street Build 2K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
  3. marcman804

    marcman804 Proven Member

    445
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    Joined Mar 5, 2005
    Cumberland, Virginia
    Yeah car has been boost leak tested. Stock FIAV. Thanks
     

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  4. ishnish

    ishnish Proven Member

    811
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    Joined Jun 26, 2011
    Modesto, California
    Anyway you can get a screenshot of the car at idle so I can see where some of your values sit? Like I said, I can't view the log here at work. And are you using SD or still the stock maf to tune?
     

    Street Build 2K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
  5. marcman804

    marcman804 Proven Member

    445
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    Joined Mar 5, 2005
    Cumberland, Virginia
    Stock 2g MAF. upload_2020-2-19_13-20-58.png
     

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  6. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    Set your global to -61 https://www.ecmtuning.com/wiki/baseinjectordata

    With the car fully warmed up and everything off including the fan, set your iscposition to around 30.

    Adjust your airflowperrev to .25 by adjusting the 0 & 50hz slider under MAF Comp.

    Then adjust deadtime to get your combinedFT as close to zero as you can get it.

    Reset your fuel trim and post another log.

    Where is your wideband? And are you simulating 02 with it?
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
  7. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    Under MAF Comp and Misc, uncheck "Disable MAF compensation with SD operation". That is used with Speed Density.

    Under Dash, set your Knock CEL to 2
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
  8. ishnish

    ishnish Proven Member

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    I don't think he'll be able to get airflowperrev down to 0.25 since he's running 272s. Marcman, I think you'd be good if you can get your airflowperrev in the 0.25-0.28 range.
     

    Street Build 2K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
    tk106 likes this.
  9. marcman804

    marcman804 Proven Member

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    Cumberland, Virginia
    I have my wideband in the rear location. Are these settings correct?

    upload_2020-2-19_14-18-17.png
     

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  10. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    It's correct now. You should label it also.
    So you have the stock front 02 in place? If so, turn narrowband simulation off. This is just preference.
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
  11. marcman804

    marcman804 Proven Member

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    Cumberland, Virginia
    Which direction should the sliders be adjusted for airflowperrev? As well as adjusting the deadtime? Can any harm be done by going the wrong way? When I set the Global to -61 the AFR went to 19-20+

     
    Last edited: Feb 19, 2020

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  12. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    airflowperrev - down
    deadtime - up. Set airflowperrev first.
    No harm by moving in the wrong direction. Just make small adjustments and see how things change.
    For global, you can leave it until WOT tuning.
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
    marcman804 likes this.
  13. ishnish

    ishnish Proven Member

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    Adjusting the 50hz maf sliders lower will lower the airflowperrev value. Adjusting both maf sliders and deadtimes will not hurt your car.

    I HIGHLY recommend, actually feel that it is REQUIRED, to watch the ECMtuning demo videos as they're VERY informative and will help guide you a good bit.
    https://www.ecmtuning.com/demos.php
     

    Street Build 2K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
    tk106 likes this.
  14. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    +1 on what ishnish said.

    Watch these also.

     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
    ishnish likes this.
  15. marcman804

    marcman804 Proven Member

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    Joined Mar 5, 2005
    Cumberland, Virginia
    Those changes made the idle better already. Got the airflowperrev down to .29 - .31. The ISCPosition wont go lower than 34 so far. I have it showing the wideband as LC1 now. Thanks all you guys help so far, its greatly appreciated. I just wanna get this thing going so I can enjoy it again. I havent driven this car in over 4 years and Im tired of looking at it sit. I attached a screenshot as well as the log.

    upload_2020-2-19_15-16-18.png
     

    Attached Files:

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
    ishnish likes this.
  16. marcman804

    marcman804 Proven Member

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    Cumberland, Virginia
    These are what I used to go by to get as far as I had before help from you guys. Thanks

     

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
    tk106 likes this.
  17. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Independence, Kansas
    Short term fuel trims still need to be within +-5%. Deadtime adjustments will help that.
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    749  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 1K  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
    tk106 likes this.
  18. Vegas smith

    Vegas smith Proven Member

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    Your isc is very unresponsive. It largely just sits at 34 and that doesn't seem right.
     

    Street Build 4K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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    tk106 likes this.
  19. marcman804

    marcman804 Proven Member

    445
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    Joined Mar 5, 2005
    Cumberland, Virginia
    Yeah I dont understand that. It will go up but wont go below 34.

     

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  20. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    Jafro has a video on testing isc also
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
  21. marcman804

    marcman804 Proven Member

    445
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    Joined Mar 5, 2005
    Cumberland, Virginia
    Would the selections on this screen effect the ISCPosition?
     

    Attached Files:

    843  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  22. Vegas smith

    Vegas smith Proven Member

    3,137
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    Joined Dec 2, 2002
    Houston, Texas
    I wouldn't think your setup requires an idle of 1000 rpm; more like 850-950. Everything thing else looks fine. Coasting offset should be, according to ecmlink, set at any number plus an idle of 900. In other words, 900+100= your 1000 idle goal. Therefore, your current coasting offset would be 100.
     

    Street Build 4K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  23. TK's9d2TSi

    TK's9d2TSi Supporting Member

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    Cincinnati, Ohio
    Use the BISS to adjust iscposition. Car has to be fully warmed up with everything off including the radiator fan.
     

    379  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    420  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 3K  6

    1992 Eagle Talon TSi AWD
    12.2 @ 120 · 1G DSM
    Loading...
    Evolving_sti and 1990TSIAWDTALON like this.
  24. Lucky13

    Lucky13 Supporting Member

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    Palm Beach Gard, Florida
    Your TPS Volts in the first picture is at .61....try and adjust it to .63. In your last picture the Idle Switch ( IdleSw ) isn't closed ( showing 0 not 1 ). Maybe needs a throttle cable adjustment though in your first picture it did show closed.
     
    1990TSIAWDTALON and ishnish like this.
  25. ishnish

    ishnish Proven Member

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    Modesto, California
    Dude...
    DEFINITELY disable TPS adjust and set the tps properly (mechanical way) before using that feature.
    And just like the person above me (Lucky13) posted, your idle switch should be reading as closed (1) at idle and should only go to 0 once you depress the gas pedal at around 1% throttle
     

    Street Build 2K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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