Tuning For tuning and related discussions

LTFT and STFT range

Thread Tools
 
Search this Thread
 
Old Jan 1, 2008 | 12:44 PM
  #1  
Kaisoboy's Avatar
Thread Starter
Senior Member
 
Joined: 12-20-06
Posts: 2,379
Likes: 0
From: Calgary, AB Canada
LTFT and STFT range

I am tuning my VE and MAF. I was just curious as to what the range for these should be during WOT and highway cruising. I think I have it dialed in but am not sure. At WOT my LT and ST are at +/- 0.0 and at cruising speed LT = 2.5 to 5.0 and ST = 0.0 to -5.0.

Pleases post your LTFT and STFT at WOT and Cruise speed (highway speed).

thanks

Originally Posted by Kaisoboy
I am tuning my VE and MAF. I was just curious as to what the range for these should be during WOT and highway cruising. I think I have it dialed in but am not sure. At WOT my LT and ST are at +/- 0.0 and at cruising speed LT = 2.5 to 5.0 and ST = 0.0 to -5.0.

Pleases post your LTFT and STFT at WOT and Cruise speed (highway speed).

thanks
bump

Last edited by Kaisoboy; Jan 1, 2008 at 12:44 PM. Reason: Automerged Doublepost
Reply
Old Jan 1, 2008 | 12:47 PM
  #2  
spaz's Avatar
Senior Member
 
Joined: 12-01-06
Posts: 1,676
Likes: 1
From: Calgary,Canada
ltft and stft are not used at wot. They are only used in closed loop.+/- 4 good for ltft don't worry about the stft.
Reply
Old Jan 1, 2008 | 12:47 PM
  #3  
Sunburst_SS's Avatar
Senior Member
 
Joined: 04-08-06
Posts: 2,395
Likes: 3
From: Charlotte, NC
fuel trims are not active at WOT since you are in open loop. Fuel trims will read with the vehicle in closed loop...you want to be +/- 5% about no more then that
Reply
Old Jan 1, 2008 | 01:15 PM
  #4  
Kaisoboy's Avatar
Thread Starter
Senior Member
 
Joined: 12-20-06
Posts: 2,379
Likes: 0
From: Calgary, AB Canada
Talking

ok. looks like I still got to do some more tuning then as soon as my car is out of the shop.

thanks

So when is the car running in closed loop? Sorry for these questions but I'm cooonnnfffuuussseeeddd....

Last edited by Kaisoboy; Jan 1, 2008 at 01:15 PM. Reason: Automerged Doublepost
Reply
Old Jan 1, 2008 | 01:18 PM
  #5  
Sunburst_SS's Avatar
Senior Member
 
Joined: 04-08-06
Posts: 2,395
Likes: 3
From: Charlotte, NC
car will run in closed loop after it reaches operating temp. and generally under cruising conditions. WOT will kick it out of closed loop.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Meadowvalien
Drivetrain
1
Aug 17, 2017 06:32 PM
agentirons
Electronics, Audio, and Video
2
Oct 16, 2015 02:11 AM
Jesse
Parts
15
Oct 13, 2015 09:32 PM
MrInsanityWolf
New Members Check In!!
3
Sep 29, 2015 04:54 PM
Highgross89
08-10 SS Turbocharged General Discussion
20
Sep 11, 2015 03:24 PM




All times are GMT -4. The time now is 10:19 AM.