PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

MAFLESS VE Tuning

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Old Sep 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?
Yes you can. I am not to sure aobut plugging it back in, and i havent tried yet. Yes the ve table will affect PE with the maf unplugeed you ve table better be dialed in. Yes, that is one way to look at it.
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Old Sep 18, 2004 | 03:58 PM
  #62  
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Here is a pic of my VE table, all hand smoothed.

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Old Sep 18, 2004 | 04:22 PM
  #63  
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DAYUM THAT IS SWEET. How come the axixies (sp) are reversed?

Hell I am about to send you my bin file so you can get mine to look like that. :cheers;

j/k
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Old Sep 18, 2004 | 04:37 PM
  #64  
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You try out that Holden MAF table yet?
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Old Sep 18, 2004 | 04:38 PM
  #65  
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nope not yet. The weather is affecting the car. Acts like a carb if you ask me
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Old Sep 18, 2004 | 05:20 PM
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Originally Posted by HumpinSS
nope not yet. The weather is affecting the car. Acts like a carb if you ask me
Really? I haven't had that problem, what is it doing?
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Old Sep 18, 2004 | 05:28 PM
  #67  
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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
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Old Sep 18, 2004 | 05:36 PM
  #68  
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I just swung the table around a little bit. hold both mouse buttons and drag the table around.

edit: I believe that info is in the help files.
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Old Sep 18, 2004 | 05:44 PM
  #69  
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LOL I havent read the help files :doh::sillyme:
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Old Sep 18, 2004 | 11:02 PM
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Yeah, you have to read the help file. LOL.
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Old Sep 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.
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Old Sep 19, 2004 | 01:20 PM
  #72  
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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!
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Old Sep 19, 2004 | 03:04 PM
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I agree, his readings below 1600 rpms are low from scaling them. As he tunes the VE it should start to pull up. I would think.
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Old Sep 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!

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
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Old Sep 19, 2004 | 09:35 PM
  #75  
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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...
Attached Thumbnails MAFLESS VE Tuning-mikeve.jpg  
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Old Sep 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...
They are all starting to look very similar. Mine looks pretty close, but I am not done yet.
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Old Sep 19, 2004 | 10:02 PM
  #77  
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If that is the case :wtf: am i doing wrong
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Old Sep 19, 2004 | 10:17 PM
  #78  
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Why do you think you are doing something wrong?
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Old Sep 19, 2004 | 10:25 PM
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nothing necessarily wrong, just a litlte out of whack but im just judging form you VE. It seems to be right on where it looks like it should, your rich from torque peak to hp peak right
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Old Sep 19, 2004 | 10:38 PM
  #80  
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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
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