Surging and bucking at low rpm and load.
02-15-2005, 05:31 PM
#41
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Originally Posted by Bink
Forums are terrific!
I wasn't trying to be humble...I was stating the facts!
Figuring out the IAC and RAF tables was very significant
- I also remember when you persisted, on the Edit list, about IAC applying to ETC/ Vettes. 
I'm just trying to give credit where credit is due.
................. 
I wasn't trying to be humble...I was stating the facts!
Figuring out the IAC and RAF tables was very significant
- I also remember when you persisted, on the Edit list, about IAC applying to ETC/ Vettes. I'm just trying to give credit where credit is due.
................. 
02-15-2005, 05:53 PM
#42
Originally Posted by P Mack
I thought we determined that the IAC wasn't causing the bucking problems. Another User said with the IAC locked it didn't make any difference. If that's the case, the RAF table would have no effect.
02-16-2005, 03:40 PM
#43
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For some reason, the whole concept of tuning the idle has been kicking my ***. SO, if yall don't mind, I'd like to throw a few more questions out here.
After reading, re-reading, and re-reading Gojo's post, should we have the Desiac_B or sae.MAF g/s parameter in the data field of the MAP?
If and when I can get the IAF table dialed in, how do I go about dialing in the IAFP table? I understand IAFP this is based on IAT, and directly effects the desiac_b, but what I'm wanting to know is, is this strictly a SOP adjustment or can I match it to logged data?
Gojo - thanks for all your help on the other board. I've been trying like hell to get this to work, but like I said, the idle transition tuning concept is flat kicking my ***!
Originally Posted by ArKay99
3: In the Data tab select Desired IAC Air Flow (Grams/s)
If and when I can get the IAF table dialed in, how do I go about dialing in the IAFP table? I understand IAFP this is based on IAT, and directly effects the desiac_b, but what I'm wanting to know is, is this strictly a SOP adjustment or can I match it to logged data?
Gojo - thanks for all your help on the other board. I've been trying like hell to get this to work, but like I said, the idle transition tuning concept is flat kicking my ***!
02-16-2005, 04:11 PM
#44
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TA,
Good question. I like to use MAF g/s for Idle Airflow values. You can also use Dynair. When you are matching Desiac to MAF values you raise or lower IAPark. If Desiac is logging lower than MAF g/s, raise IAPark values. How much? That's the good question. I do 1 to 1 and then SOP.
We are working with averages when logging so it usually requires some tweaking.
I've noticed that the closer to correct the tune gets the more affect small changes have.
The IAPark table temps show as 0-20-40-60 etc. At times, when tweaking, you may raise a value and lower the next temp value. Ex.raise 0 and lower 20 which creates a midpoint between temps that is different than just raising at one temp level. That make sense?
Hope I did not answer more than you wanted I wanted to be sure to answer the right question.
Good question. I like to use MAF g/s for Idle Airflow values. You can also use Dynair. When you are matching Desiac to MAF values you raise or lower IAPark. If Desiac is logging lower than MAF g/s, raise IAPark values. How much? That's the good question. I do 1 to 1 and then SOP.
We are working with averages when logging so it usually requires some tweaking.
I've noticed that the closer to correct the tune gets the more affect small changes have.
The IAPark table temps show as 0-20-40-60 etc. At times, when tweaking, you may raise a value and lower the next temp value. Ex.raise 0 and lower 20 which creates a midpoint between temps that is different than just raising at one temp level. That make sense?
Hope I did not answer more than you wanted I wanted to be sure to answer the right question.
