MAFLESS VE Tuning
09-18-2004, 03:07 PM
#61
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Originally Posted by screamn03
My question(s) is this. Can I get my LTFTs squared away without the MAF and then just plug that MAF back in, would that be the best approach? Also, if the MAF is the primary device being used for the airflow calculation from 4000+, then when it's disconnected will the VE table affect PE? Do you look at the PE multiplier and then see if it matchs you a/f ratio, if not then add or subtract to the VE table accordingly?
09-18-2004, 05:28 PM
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It just may be the short drives... I will verify for sure tomorrow sometime.
It still seems like its loading up a bit. But that may mean i need some more logging time to really get it dialed in
Do you use the avg when you are logging?
I am and just wanted to make sure we are on the same page
It still seems like its loading up a bit. But that may mean i need some more logging time to really get it dialed in
Do you use the avg when you are logging?
I am and just wanted to make sure we are on the same page
09-19-2004, 12:51 PM
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Yes, I use the average when I am logging. If the average is closer to 0 I figure it has to swing less either direction which would make the tune more stable. That part is just my opinion though.
09-19-2004, 01:20 PM
#72
unless the VE table operates differently then what im used to, Dirk it look like youll be lean at peak torque and rich up top, assuming injector flow ratings are where they should be. Have you had it on a dyno to check this out?
Part of the benefits of the MAF, is that it does a decent job accounting for weather changes because the density of the air changes. Im sure thats why GM likes to rely on 2 inputs, to reduce error. Remove the MAF, and now you have to fix the error!
Part of the benefits of the MAF, is that it does a decent job accounting for weather changes because the density of the air changes. Im sure thats why GM likes to rely on 2 inputs, to reduce error. Remove the MAF, and now you have to fix the error!
09-19-2004, 09:28 PM
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Originally Posted by GrannySShifting
unless the VE table operates differently then what im used to, Dirk it look like youll be lean at peak torque and rich up top, assuming injector flow ratings are where they should be. Have you had it on a dyno to check this out?
Part of the benefits of the MAF, is that it does a decent job accounting for weather changes because the density of the air changes. Im sure thats why GM likes to rely on 2 inputs, to reduce error. Remove the MAF, and now you have to fix the error!
Part of the benefits of the MAF, is that it does a decent job accounting for weather changes because the density of the air changes. Im sure thats why GM likes to rely on 2 inputs, to reduce error. Remove the MAF, and now you have to fix the error!
I havent had it to the dyno but the WB indicates me being rich throughout the range based on some track runs... 4k-6.5k
The maf has been removed because it seemed to cause issues with fueling. IE postive trims no matter what i did. even scaling the ifr table had no effect on the trims.
The table overlay indicates higer than stock values from 3600 on up in the higher map values.
My ve table is being tweaked via the trims histogram minus the MAF, trying to hit as many closed loop cells on the histogram as possible.
Jeff do you have any suggestions or anyone else for that matter
09-19-2004, 09:54 PM
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Originally Posted by horist
We spent alot of time last night on my car but here's my new VE table Idles better than with the MAF that's for sure...
Idles better than with the MAF that's for sure...
09-19-2004, 10:38 PM
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Originally Posted by Magnus
Why do you think you are doing something wrong?
Just asking everyone seems to have a smooth table except MEEEEEEE!!!!!!!!!!
I guess I need to take some more time rotating and smoothing
Jeff not to bust your ***** but your two posts seem to contradict each other after all you are the resident guru and i am jut the whipper snapper