ECMlink Please Help With Idle

[marcman804]

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.

 

[ishnish]

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?

 

[marcman804]

Yeah car has been boost leak tested. Stock FIAV. Thanks

 

[ishnish]

Yeah car has been boost leak tested. Stock FIAV. Thanks

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?

 

[marcman804]

Stock 2g MAF.

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[AWD-Tony]

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?

 

[AWD-Tony]

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

 

[ishnish]

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.

 

[marcman804]

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

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[AWD-Tony]

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

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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.

 

[marcman804]

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+

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?

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.

 

[AWD-Tony]

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+

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.

 

[ishnish]

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?

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

 

[AWD-Tony]

+1 on what ishnish said.

Watch these also.

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[marcman804]

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.

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[marcman804]

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

+1 on what ishnish said.

Watch these also.

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[1990TSIAWDTALON]

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

 

[Vegas Smith]

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

 

[marcman804]

Yeah I dont understand that. It will go up but wont go below 34.

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

 

[AWD-Tony]

Jafro has a video on testing isc also

 

[marcman804]

Would the selections on this screen effect the ISCPosition?

 

[Vegas Smith]

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.

 

[AWD-Tony]

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

 

[Lucky13]

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.

 

[ishnish]

Would the selections on this screen effect the ISCPosition?

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