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ECMlink problem after 1450cc installed

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Sam's GSX

Sam's GSX

5+ Year Contributor
395
54
Jun 10, 2018
Hohenwald, Tennessee
just installed fic 1450cc bluemax, set the recommended global and deadtime (-69.1 and 735) the car started up, sounded a bit different, choppy i guess, i ran it for a couple minutes before shutting it off,
came back to it a couple hours later, ran it for longer and it started to sputter out then died, if i started it again, it would run for a couple seconds then die.
now, in the past few months, my wideband has been reading stupid lean numbers at idle, i was going crazy trying to fix it a few months ago when it was like 18-1, but it has recently been like 25-1, and the car sounds very healthy, plus if i hold the gas at like 1600rpm, it quickly jumps down to 14.7 without changing pitch, so that cant be correct, ill post 2 logs, one is short from yesterday of me starting it, and it dying a few seconds after, and one from today that is a long idle, the car didn't die today, but sounds terrible, the same as yesterday. i have not tried to drive it yet
 

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you have any vacuum leaks or exhaust leaks anywhere? also your "TPS" im sure you know is off as well as the your maf comp sliders are adjusted throwing which is also throwing off your "Air Fuel Per Rev". im not familiar with the inline aem gauge but i have an aem wideband and had to adjust the voltages within link to try and get it to read more accurately or at least with uego gauge anyway. your STFT if your trying to reach 0% add more deadtime.
 
I'll double check for leaks, it's an aem series x, but that's to new for link, so online is what people said to do, yes I am aware about the tps.
Sometimes else that is weird is the isc position is very high, in between 80 and 100, and I can't get it lower no matter where I turn the biss screw.
Ok I'll try messing with the maf comp, and dead time, I might also try starting the tune from scratch other than the injector settings.
Thanks man
 
Ok here is what i see. ISC position looks little high for idle but not the cause of your issues. TPS volts is off a hair again not the cause of your issues. The car is in open loop and not entering closed loop at idle that is a biggy. Airflowperrev is to high. Your openloop max octane table looks terrible. What year is the ecu and the car? Your cas is not inverted. is the ecu not a 95-96? Oh hey uncheck LOCK in open loop mode under MISC. For idle and crusing ignore the wideband and instead tune off the short term fuel trims.
 
It's a 97,
So I have been running in locked open loop for about half a year because I couldn't get closed loop to 14.7, it was more like 17 at cruise no matter what I did, a side that point though, I did switch it to closed loop to see if that helped, it seemed to change it slightly, probably made it a little more fluctuating, but still the same rough idle.
The ecu I got from somewhere already socketed, I believe ecmlink, if it is a 95/96, is there something I need to do differently?
 
If it is a 95-96 and you are on 97+cas the cas signal needs inverted aka check use non 95/96 cam angle sensor. and we can get the idle and cruise correct in closed loop. let it idle in closed loop and send me a log.
 
735 deadtime sounds like way to much DT to me but I haven't looked at the logs, I'm not close to a computer currently. Just stuck out to me.
 
Ok, I have tried increasing it a bit, seemed to help a tiny bit, but not much, I haven't tried lowering it yet, I was just using the suggested deadtime from an older forum,
I'll try that, also I'm almost positive I have exhausted leaks now, it seems that's the only explanation for the very lean wideband reading
 

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You can't go by what someone else's global/deadtime as each car/engine is different. It will get you started but it still needs to be dialed in. Go to ecmlink's website, into demos and watch initial setup or fuel trim...think it's fuel trim.

http://www.ecmtuning.com/demos.php

Those are low impedance, correct?
 
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Do you have injector voltage offsets set? If you DO, zero the deadtime and work from their on getting 14.7-15.0 at idle on the wideband. Fuel trims need to be within +/-5%.
 
Also, as things normally go, I believe I have a unrelated problem that happened while I was switching the injectors, I believe I have a bad alternator, or something along those lines, because I've had to jump the car every time I go to start it with the new injectors, I was so blinded by the car not running well, that I disregarded that completely, but that could have something to do with it trying to die, once I fix that, it should just be dialing in the injectors, which that demo is great, I had watched them a couple years ago, but they are super helpful, thank you
 
No matter what you do they will never idle correctly. That's the issue with big low impedance injectors. I'm sure someone on FB already told you about that.

You really need a fic easy tune or something similar to run those injectors or move on to high impedance.
 
From what I had read on here, 1450 are the biggest you can run without an easytune, and I haven't had a perfect idle sense I went to 850cc, so I'm not to worried about that, just as good as I can get it will work.
also I get all my information here, I don't use FB information
 
Anything above 1200cc and it becomes an issue/headache. You need to fix your wideband or buy a new one if your still using that cheap crappy glowshift one. You cant adjust or do anything until you have a working/logging wideband.

Get a new wideband. Put the car back into closed loop and do your standard injector tuning by chasing fuel trims, then wot pull for global adjustment and back to readjusting deadtime.

Edit:: seems like you're running an aem now. Either way you need to fix your wideband issue. Your also better off starting off fresh in you're tune
 
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Yes I've already started my tune fresh, replacing the alternator now so the car will stay alive for more than 5 seconds, then checking for exhaust leaks, which is why I believe the wideband is not working at idle.
I personally have never used a glowshift afr gauge, not sure why you thought that.
 
I ran low impedance FIC1650s and although they had a issue transitioning from low to high pulsewidths, they would idle fine. Just takes time to dial them in. Some of the transition issues were from small lines/big pump but you CAN get them to work without an easy tune box if you try.
 
Sam's GSX said:
Yes I've already started my tune fresh, replacing the alternator now so the car will stay alive for more than 5 seconds, then checking for exhaust leaks, which is why I believe the wideband is not working at idle.
I personally have never used a glowshift afr gauge, not sure why you thought that.
Click to expand...

Sorry, must have had you confused with someone else.
 
Sam's GSX said:
Injector voltage offset? It doesn't sound like something I've messed with, but I'll look into it now.
Click to expand...
It is in the Direct Access table.
 
Sam's GSX said:
just installed fic 1450cc bluemax, set the recommended global and deadtime (-69.1 and 735) the car started up, sounded a bit different, choppy i guess, i ran it for a couple minutes before shutting it off,
came back to it a couple hours later, ran it for longer and it started to sputter out then died, if i started it again, it would run for a couple seconds then die.
now, in the past few months, my wideband has been reading stupid lean numbers at idle, i was going crazy trying to fix it a few months ago when it was like 18-1, but it has recently been like 25-1, and the car sounds very healthy, plus if i hold the gas at like 1600rpm, it quickly jumps down to 14.7 without changing pitch, so that cant be correct, ill post 2 logs, one is short from yesterday of me starting it, and it dying a few seconds after, and one from today that is a long idle, the car didn't die today, but sounds terrible, the same as yesterday. i have not tried to drive it yet
Click to expand...
Where you enter 735, I use nothing. I have the exact same injectors. Every time I tried to enter 735 or any number for that matter my car would do as yours was doing.
 
Thank you so much, I'll try that now, I was starting to think something was up with that, because in DA It has injector voltage offset, which I thought was only supposed to be used if you have that at zero.
 
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