Cold Start Up?
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From: San Diego, Ca
Originally Posted by Dixit
Okay heres what I see right off the bat, your LTIT is maxxed out at -3.00. Your STIT almost drops to -2.00+ as well. It seems like your RAF table is WAY too high. Do this. Start from a cold start and log the Idle Desired Airflow in one of your histograms. And use the Base Running Airflow as the labels. And once you get upto almost 180F then take that data and paste it into the RAF table and try it again. Cause it seems like you are way off on that. Remember to turn your AC off and FANs off when you do the logging. And remember it will take 5mins for the LTIT to start learning so it wont take effect immediately, you will have to let it idle after startup for at least 10mins to get it to come back to 0.
Dixit
Dixit
I dont understand way its so high? Thats my second log file starting from a cold start? I should have the desired airflow in there?
No no, you didnt understand me. Im saying you can use this one or do another one from a dead cold start and then insert the values.
Since your scan has it, use these numbers. This is from 68 to 212F on the RAF table.
This is what I gathered from your scan. Put that in your tune and reflash and then start the car up again from a dead stop and see how that goes. Also keep it running for more than 5mins at idle so we can get your LTIT closer to zero.
Dixit
Since your scan has it, use these numbers. This is from 68 to 212F on the RAF table.
Code:
8.20368 5.94644 5.22991 4.96983 4.48185
Dixit
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From: San Diego, Ca
Ok...I will try it again. BTW...that file was from a cold start. I really appricate your help! I might be using an old RAF xls spreedsheat. I am still using ver 1.7.
Ahhh well that explains why you cant do the histograms. Well definetely use those values for now for the respective values then do another cold start and see how far your STIT/LTIT is off. Then tweak it by hand and you will be dead on.
Dixit
Dixit
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From: San Diego, Ca
Originally Posted by ninobrn99
why arent you using 2.0??
I have it...I didn't know I needed to pull the file thats in my car with 2.0.
I have playing with it a bit. Looks a bit more involved. I have a smog this sunday(maybe), and I might be worried if I use 2.0 not fully understanding it. It sounds like its alot easier to use.
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From: San Diego, Ca
Originally Posted by Dixit
No no, you didnt understand me. Im saying you can use this one or do another one from a dead cold start and then insert the values.
Since your scan has it, use these numbers. This is from 68 to 212F on the RAF table.
This is what I gathered from your scan. Put that in your tune and reflash and then start the car up again from a dead stop and see how that goes. Also keep it running for more than 5mins at idle so we can get your LTIT closer to zero.
Dixit
Since your scan has it, use these numbers. This is from 68 to 212F on the RAF table.
Code:
8.20368 5.94644 5.22991 4.96983 4.48185
Dixit
I flashed it last night, and started it up this morning. The lde was good, did not shoot way up! Thanks! but, it would not idle for crap. I will do the idle relearn later today. I'm gonna get the settings you told me from a cold start tomorow morning. Would you mind if I sent you that file?
Thanks again!
Jason
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From: San Diego, Ca
Originally Posted by Dixit
I dont mind, just include the scan and tune file so I can see really whats going on. You really dont have to do idle relearns on drive by wire throttle bodies.
Cool! Thanks. I am assuming the idle will relearn itself?
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Originally Posted by Dixit
I dont mind, just include the scan and tune file so I can see really whats going on. You really dont have to do idle relearns on drive by wire throttle bodies.
I just emailed you the log, and my current tune.
Thanks for the help!
Jason
I also attached it here, just in case.
Code:
17.00000 15.00000 13.00000 8.06055 5.42773 5.12598 4.88672 4.50391 4.50000 4.50000
I also see you dont have a huge surge on startup, seems perfect now. Looking good Mr. Caaaaarterrrrr.
I was going to send you a tune all done for you except I use 2.0 and I cant save it as a BIN format, it wouldve been saved as an HPT format which you cant read.
Dixit
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You are the man Dixit! Thank you very much for your help!
I have another question for you, if you would be so kind to answer? Should I retune my VE table(LTFT) Ie:reflash and do the 100 miles log again...looking at this? Or should I just tune for STFT?
LTFT:
STFT:
Thanks Again!
Jason
I have another question for you, if you would be so kind to answer? Should I retune my VE table(LTFT) Ie:reflash and do the 100 miles log again...looking at this? Or should I just tune for STFT?
LTFT:
STFT:
Thanks Again!
Jason
Since your basically under 10, just disable LTFT from your tune, reflash the car with that tune of the LTFT disabled, then reset the fuel trims, then drive around for like 20 miles and try to hit all the cells like you did before in that screen shot (below 4000rpm) and try to hit them a few times to get a consistent number. Then just use the STFT histogram and make those changes to the VE table as required. Then check again after clearing the fuel trims and if you can get it between 0 and -4, then you are spot on, most aim for just +4 to -4.
Dixit
Dixit
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From: San Diego, Ca
Cool! I was hoping not to reflash and do the relearn again...what a pain. Thanks for all your help!
Now, just so I get it right. When I get my final numbers from the STFT histogram...I paste-special ADD it to the VE table...right, and do nothing with the LTFT?
Now, just so I get it right. When I get my final numbers from the STFT histogram...I paste-special ADD it to the VE table...right, and do nothing with the LTFT?