ECMlink Good Bad and Ugly? (idle log)

[2GAWD4U2NV]

Alright, I need someone to help guide me in the right direction. Here is an idle log with some revs thrown in.

If you notice, the car wasn't idling on it's own well until it finally got warm. You can see this by scrolling more towards the end.

I am throwing a random misfire CEL, so I believe my timing may be off? Checked timing with a timing light and all checked out.

I have driven it a few times and the car drives fine after 2500 rpms and accelerating. If you try and maintain a set speed, it's very annoying as it misses and sputters. Tap the gas a few times and you're on your way again.

 

[snowborder714]

1. Who did the current adjustments that are in there? Your fuel settings are not right (missing a global number, which should be -40%). And I have no idea how that fuel "curve" got there. That should be zero'd out.

2. Are you on a 6 or 7 bolt?

3. Are you using a 1g or 2g TPS (how many pins? 3 pin = 1g, 4 pin = 2g)?

4. Your simulated front o2 isn't cycling. That needs to be addressed and probably has something to do with the crappy idle.

5. Check the "Use non-95/96 cam angle sensor" box in the Misc tab unless you are using one.

6. Make sure your plug wires are in the correct (swapped) order.
swapplugwires [ECMTuning - wiki]

7. Log ISCPosition.

8. Make sure there are not boost leaks.

9. Check base timing (and possibly adjust if you're running a 1g CAS).


Once that's all done and taken care of, grab a new log once the car's up to temp.

 

[kthackst]

I see you have the narrowband simulated. Are you sure you have the correct voltage in there or are you just guessing?

Your combined fuel trims are pulling a TON of fuel. You need to get the combined FT closer to 3-5%. Your grams per rev should be .25-.28. Another thing is your MAFCOMP needs to be done.

Edit. I see in your profile you have 750cc injectors but your global scalling in Link is 0%? What size injectors do you have?

 

[2GAWD4U2NV]

1. Who did the current adjustments that are in there? Your fuel settings are not right (missing a global number, which should be -40%). And I have no idea how that fuel "curve" got there. That should be zero'd out.

2. Are you on a 6 or 7 bolt?

3. Are you using a 1g or 2g TPS (how many pins? 3 pin = 1g, 4 pin = 2g)?

4. Your simulated front o2 isn't cycling. That needs to be addressed and probably has something to do with the crappy idle.

5. Check the "Use non-95/96 cam angle sensor" box in the Misc tab unless you are using one.

6. Make sure your plug wires are in the correct (swapped) order.
swapplugwires [ECMTuning - wiki]

7. Log ISCPosition.

8. Make sure there are not boost leaks.

9. Check base timing (and possibly adjust if you're running a 1g CAS).


Once that's all done and taken care of, grab a new log once the car's up to temp.

7 bolt
2G TPS

I won't be able to log again until tomorrow, but I definitely will with you're provided options.

 

[snowborder714]

Since you have a 2g TPS, uncheck the "Simulate idle switch from TPS" box in the RPM/TPS tab. This will allow the built-in idle switch to do its job.

 

[2GAWD4U2NV]

I see you have the narrowband simulated. Are you sure you have the correct voltage in there or are you just guessing?

Your combined fuel trims are pulling a TON of fuel. You need to get the combined FT closer to 3-5%. Your grams per rev should be .25-.28. Another thing is your MAFCOMP needs to be done.

Edit. I see in your profile you have 750cc injectors but your global scalling in Link is 0%? What size injectors do you have?

The voltage was on a guideline thread on the forums. I just transferred the information over. It said slight adjustments may be needed.

Check the last 20 seconds of the log. It should be pegged around .28gm/rv which doesn't make sense. I'm running speed density. Should I still do MAFCOMP?

FIC 750s. For whatever reason, when I cut 40%, the car is absolutely terrible. Won't idle. Will start then die. I didn't place the "-" in front of a value I was trying and it 0'd the global and then the car started and idled. I don't get that personally. My only guess is it was socketed for 750s when I sent it out to ECMLink for v3 upgrade. I had left the not saying 750s; however my receipt said 450s. Once again, confusing.

Since you have a 2g TPS, uncheck the "Simulate idle switch from TPS" box in the RPM/TPS tab. This will allow the built-in idle switch to do its job.

I have a 1G TB with 2G part conversion. Does this still make your statement valid?

 

[snowborder714]

Set the global to -40% and zero out the fuel sliders.

You should put on "Track Datalog" and see what cells on the SD table are being used at idle. Then adjust them to get your AirFlowPerRev down to .28. Once that's solid, then go to your deadtime and adjust it to get your CombinedFT as close to 0% as you can.

 

[2GAWD4U2NV]

Set the global to -40% and zero out the fuel sliders.

You should put on "Track Datalog" and see what cells on the SD table are being used at idle. Then adjust them to get your AirFlowPerRev down to .28. Once that's solid, then go to your deadtime and adjust it to get your CombinedFT as close to 0% as you can.

That's the catch. Last time I had the global calculated, it wouldn't idle. Just start then die. Will this same method work if I adjust while manually keeping the car running until I get the value in the ballpark for it to catch and idle?

 

[snowborder714]

If it didn't run with the fuel settings input properly, then airflow is to blame. You need to adjust the SD table to get values in check.

 

[2GAWD4U2NV]

If it didn't run with the fuel settings input properly, then airflow is to blame. You need to adjust the SD table to get values in check.

Great. I may not be able to tonight, but as soon as I get the chance I will input these options and uncheck what's needed and zero out that "curve"

As soon as, I'll repost log.

I didn't really accomplish anything. I spent 15 minutes with 40% fuel cut patting my throttle and editing SD VE table and got absolutely no where.

I need a better understanding of the "basic concept" for adjusting with the VE table to increase/decrease gm/rv.

And like always, the car ran 1000000000000000% when no fuel was cut. I know it is opposite of what everyone says, but it currently makes more sense to me, until i can get the gm/rv concept down.

Additional log