Idle Airflow config ?
Ahhh dang it. I don’t have my computer with me. There’s a table in fuel, then closed loop at the top left. If adds or subtracts fuel vs temp and map. Or it could be your idle air in that temp range. Or like I originally thought, your ve table. My money is on the ve table to be honest. Change it and see.
I have a **** ton of air in the colder regions. Over 20g/sec in idle air.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
I can't open the file. it says that I am not part of the remote tuning network. GRRRRR.....
I was wanting to look at the Idle - Airflow - General stuff. The IAC reset position, Desired IAC max, Desired airflow max. IAC Park position airflow table also.
I was wanting to look at the Idle - Airflow - General stuff. The IAC reset position, Desired IAC max, Desired airflow max. IAC Park position airflow table also.
I have a **** ton of air in the colder regions. Over 20g/sec in idle air.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
good catch on the maf. What if you just unplug it?
Ive had different results with changing my ve. I’ve had it to where it’ll crank right up or it’ll stumble for a bit and then smooth out with changing nothing but the ve table.
I have a **** ton of air in the colder regions. Over 20g/sec in idle air.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Edit: Just remembered that I already have my follower delay in the 25 to 35 range.
Last edited by Monte4ever; May 8, 2018 at 06:32 PM.
IIRC all those are still stock from a 2002 Camaro.
Ok I will check those stock values. The first cell in the maf curve thing is necessary any time you write a tune -- if you are SD. If you unplug the maf you still need that first cell like JF described. ESPECIALLY if you unplug maf. Needs fuel until it fails. Even on a SD custom OS.
Last edited by Darth_V8r; May 8, 2018 at 06:09 PM.
OK, try the following (UNITS IN G/SEC):
Desired IAC Max Area -- Set to 120.
Desired airflow Max - set to 50
IAC Park Position Airflow table:
42...39...34...30....21....21.....21.....21....21. ....21
If it does what I expect, it'll start and flare really bad vs stumbling to life
Desired IAC Max Area -- Set to 120.
Desired airflow Max - set to 50
IAC Park Position Airflow table:
42...39...34...30....21....21.....21.....21....21. ....21
If it does what I expect, it'll start and flare really bad vs stumbling to life
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Verdad Gallardo OK, try the following (UNITS IN G/SEC):
Desired IAC Max Area -- Set to 120.
Desired airflow Max - set to 50
IAC Park Position Airflow table:
42...39...34...30....21....21.....21.....21....21. ....21
If it does what I expect, it'll start and flare really bad vs stumbling to life
Desired IAC Max Area -- Set to 120.
Desired airflow Max - set to 50
IAC Park Position Airflow table:
42...39...34...30....21....21.....21.....21....21. ....21
If it does what I expect, it'll start and flare really bad vs stumbling to life
I have a **** ton of air in the colder regions. Over 20g/sec in idle air.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Also, the fueling -- are you taking about the EQ ratio? You probably need to be around 1.10 to 1.15 there in the colder regions at around your typical MAP pressure.
Startup VE doesn't do much. Period. But on startup, I keep the VE table at 100-105kPa @ 0 RPM pretty high. In the 80s, even if everything else isn't. That gives fuel. And if your problem is not airflow related, but fuel related, that's one way to do it. I do that because I'm SD.
Also, if you're running SD, try adding airflow to your MAF so that if it reads the MAF before failure, you have enough airflow in there. Try 15g/sec @ 1500 as that's what it will see before failing over.
Last edited by Monte4ever; May 8, 2018 at 08:27 PM.
Let’s do this: (what I did the other day I was having issues)
1) make sure your ve is correct. I keep saying this because ITS VERY VERY IMPORTANT! I chased my tail with idle issues for a while because of my ve was not good enough.
2) put all your idle stuff back to stock. Throttle cracker, throttle follower etc
3) put your stock idle in park and neutral timing tables back in. Add 2-3 degrees of timing to the whole table.
4) put your stock timing in the 400-1200 cells in your main tables. Blend in at the bottom under higher loads.
Flash it.
Start the car. Start your scanner. Force your iac valve shut. If the car does, crack the throttle blade more. Dona tps reset and make sure you unplug your cable while resetting. Start the car again and repeat the process until you can just get the car to idle with the iac closed. Then turn it back on.
5) now run your idle config and do your airflow. If you do your airflow then change your throttle opening, your airfliw will now be off again. Someone told me that it won’t be, but mine always is. So I go by my experience. After these steps, your car should crank and idle well. You may need to play with your spark correction to smooth it out a little more.
1) make sure your ve is correct. I keep saying this because ITS VERY VERY IMPORTANT! I chased my tail with idle issues for a while because of my ve was not good enough.
2) put all your idle stuff back to stock. Throttle cracker, throttle follower etc
3) put your stock idle in park and neutral timing tables back in. Add 2-3 degrees of timing to the whole table.
4) put your stock timing in the 400-1200 cells in your main tables. Blend in at the bottom under higher loads.
Flash it.
Start the car. Start your scanner. Force your iac valve shut. If the car does, crack the throttle blade more. Dona tps reset and make sure you unplug your cable while resetting. Start the car again and repeat the process until you can just get the car to idle with the iac closed. Then turn it back on.
5) now run your idle config and do your airflow. If you do your airflow then change your throttle opening, your airfliw will now be off again. Someone told me that it won’t be, but mine always is. So I go by my experience. After these steps, your car should crank and idle well. You may need to play with your spark correction to smooth it out a little more.
Maybe I am confused. I been approaching this as if the idle stuff is fine, just seems to cold start poorly, then catch and run fine. So I was thinking the max idle area was restricting the IAC from opening past a certain point, but then adaptive idle kicks in and it takes off and runs.
If there is a whole slew of idle issues then I missed something.
If there is a whole slew of idle issues then I missed something.
Maybe I am confused. I been approaching this as if the idle stuff is fine, just seems to cold start poorly, then catch and run fine. So I was thinking the max idle area was restricting the IAC from opening past a certain point, but then adaptive idle kicks in and it takes off and runs.
If there is a whole slew of idle issues then I missed something.
If there is a whole slew of idle issues then I missed something.
Well without me being there I was just suggesting a start over. I’ve had to do that because sometimes you make so many changes you forget what did what. If your running in sd mode, maybe that’s messing with it because it’s picking up the maf for a little bit. Your settings could be wrong for that. Do a search on how to put it in sd mode and make sure everything is correct. Maybe your diagnostic codes aren’t set correctly.
And check your startup flare spark. You could try making the startup flare less negative spark.
Sorry if i confused anyone, I’ll leave what I posted up because if someone is having idle issues, that process will help.
And check your startup flare spark. You could try making the startup flare less negative spark.
Sorry if i confused anyone, I’ll leave what I posted up because if someone is having idle issues, that process will help.
Originally Posted by Kfxguy
Well without me being there I was just suggesting a start over. I’ve had to do that because sometimes you make so many changes you forget what did what. If your running in sd mode, maybe that’s messing with it because it’s picking up the maf for a little bit. Your settings could be wrong for that. Do a search on how to put it in sd mode and make sure everything is correct. Maybe your diagnostic codes aren’t set correctly.
And check your startup flare spark. You could try making the startup flare less negative spark.
Sorry if i confused anyone, I’ll leave what I posted up because if someone is having idle issues, that process will help.
And check your startup flare spark. You could try making the startup flare less negative spark.
Sorry if i confused anyone, I’ll leave what I posted up because if someone is having idle issues, that process will help.
Ok, here's what I did:
1. Added 2* timing to the crank spark table
2. Changed the IAC table to the figures Darth V8R posted and
3. Raised the MAF table's first cell from 13g/sec to 15
Car started as usual so my thinking was that it didn't have time to adjust to the new IAC settings so I cut it off after 20 seconds or so of idling. I waited for a few seconds and tried to restart it but it would not start. After trying 3 times I switched back to the original IAC settings and it started right up. IDK if this matters but the logged Idle Desire Airflow and the Dynamic Airflow was approx 50% off from each other with Idle Desire airflow being the lowest (7.19 to 15.53).
1. Added 2* timing to the crank spark table
2. Changed the IAC table to the figures Darth V8R posted and
3. Raised the MAF table's first cell from 13g/sec to 15
Car started as usual so my thinking was that it didn't have time to adjust to the new IAC settings so I cut it off after 20 seconds or so of idling. I waited for a few seconds and tried to restart it but it would not start. After trying 3 times I switched back to the original IAC settings and it started right up. IDK if this matters but the logged Idle Desire Airflow and the Dynamic Airflow was approx 50% off from each other with Idle Desire airflow being the lowest (7.19 to 15.53).
Thanks for giving it a try. It was a bit of a stab in the dark without being able to read the file, but it did not do as I expected. After the car catches and idles, but while it's still cold, what is your dynamic airflow (not commanded airflow)? And, are you definitely SD or MAF?
The fact that your dynamic and commanded are so far apart, that tells me the IAC effective area table is off - likely still stock. But if we mess with that right now, it's going to continue to do what it is doing right now and possibly act worse.
The fact that your dynamic and commanded are so far apart, that tells me the IAC effective area table is off - likely still stock. But if we mess with that right now, it's going to continue to do what it is doing right now and possibly act worse.
Last edited by Darth_V8r; May 9, 2018 at 06:43 PM.