EFI Tech All things EFI and making classics modern!

          
 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 08-06-2022, 12:58 PM
djustice's Avatar
djustice djustice is offline
Senior Chief
 
Join Date: Jan 2014
Location: Norway
Posts: 258
Default WOT from a dig og just off idle stumble

I have been trying to tune a part of the fuelmap that gives me issues during acceleration.
Going wot from idle or just after about 1000-1100 rpm, what i think is happening is acceleration enrichment is disableing learn when it is active hence this area will never have self learning. i have been manually adding fuel to a portion that is from 80 kpa and up to 105 kpa in the 900 rpm to 2000 rpm area with little change. i have attached the my cfg file and a datalog in the link below.
the datalog has 2x heavy acceleration events one rigth after the log starts and one at very end of the data log, both times experienced stumbeling and hesitation til i eased off the throttle.
if i roll into the throttle and gain more rpm on my way to full throttle there is no issue.
After this log i did a +5% extra fuel to base map in the affected area, but that did produce much worse stumble. so i reverted back.

If anyone is intrested i would love to have feedback on the datalog and base map. there has only been cruising and a few full throttle pulls to about 3500 - 4000 rpm so far. and a lot of transfer learing to base + manual smoothing (no smooth all button used) https://www.dropbox.com/s/92bre9z7ip...20log.rar?dl=0

__________________
Murphy's law - "Anything that can go wrong will go wrong".
-469 ,Butler 310+ Eheads, Hurricane intake portmatched by butler, Butler roller 230/236 @0.50 112 LSA, Johnson lifters, pypes 2 1/2" exhaust, 3.42 yukon duragrip lsd, holley sniper efi, hyperfuel efi tank +++
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:32 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017