PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

LTFT log help

Thread Tools
 
Search this Thread
 
Old 01-31-2003, 10:40 AM
  #1  
Teching In
Thread Starter
 
red01z06's Avatar
 
Join Date: Jan 2003
Location: San Antonio, TX
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts

Default LTFT log help

After doing some logs this morning, I am getting large negative numbers. I have been averaging my fuel cells 4-16 and throwing out the large numbers. Is this normal, or is there a problem that I am missing? My csv file

What do you guys think?

2001 Z06 with:
Haltech TRIC
MAFT
30lbs injectors
B&B shorty headers and Borla stingers.
Old 01-31-2003, 11:11 AM
  #2  
TECH Apprentice
 
J&JsTA's Avatar
 
Join Date: Dec 2001
Location: Whitby Ont Canada
Posts: 357
Likes: 0
Received 0 Likes on 0 Posts
Default Re: LTFT log help

Not sure about the big bumps(-95)as I have never seen that but if you remove them your averages are around -4.5 which is not all that bad. You may want to try the F setting which is 5% lean and give it another go after approx 30-45 min of drive time to let it settle.

<small>[ January 31, 2003, 11:21 AM: Message edited by: J&JsTA ]</small>
Old 01-31-2003, 11:53 AM
  #3  
TECH Addict
iTrader: (6)
 
The Dragon's Avatar
 
Join Date: Nov 2001
Location: Tampa, Florida
Posts: 2,099
Likes: 0
Received 0 Likes on 0 Posts

Default Re: LTFT log help

I didn't look at your file but what do the other parameters look like and in which fuel cell are you when these spikes occur?
Old 02-01-2003, 12:24 AM
  #4  
Teching In
Thread Starter
 
red01z06's Avatar
 
Join Date: Jan 2003
Location: San Antonio, TX
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts

Default Re: LTFT log help

The spikes occur at all fuel cell ranges. And also at different times from bank to bank.
Old 08-31-2003, 02:55 PM
  #5  
Teching In
 
REVZ's Avatar
 
Join Date: Aug 2002
Location: Dallas, TX
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default Re: LTFT log help

I am having the same problem. I was all good a few months ago. Got out ATAP a few days ago to see how the car was doing and now I am getting -100 or more spikes every couple seconds. Other than that my LTFT averages are slightly neg. It's almost like it is getting a bad frame from the OBDI or ATAP... ? I am going to try and follow this up with the manufacturer.





All times are GMT -5. The time now is 02:20 PM.