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

How long does it take for your AFR/Trims

Thread Tools
 
Search this Thread
 
Old 04-17-2005, 04:08 PM
  #1  
FormerVendor
Thread Starter
iTrader: (1)
 
HumpinSS's Avatar
 
Join Date: Feb 2002
Location: Waldorf, MD
Posts: 3,059
Likes: 0
Received 0 Likes on 0 Posts
Default How long does it take for your AFR/Trims

to stabilize after a gas refill?
Old 04-17-2005, 06:59 PM
  #2  
TECH Addict
iTrader: (11)
 
405HP_Z06's Avatar
 
Join Date: Jun 2003
Location: Arlington, Tx
Posts: 2,215
Received 18 Likes on 14 Posts

Default

Mine usually take ~25 miles of driving for me.
i.e.Fill-up and drive to work(25 miles) - skewed fuel trims.
Drive home at the end of the day and fuel trims - now stabilized.
Old 04-17-2005, 07:12 PM
  #3  
TECH Senior Member
iTrader: (7)
 
slow's Avatar
 
Join Date: Dec 2001
Location: Orlando
Posts: 6,151
Likes: 0
Received 1 Like on 1 Post

Default

depends on the fuel added.

I always use relative fresh gas, and refill it within 5 days, so it is not a big deal

but tuning a car that sat for 5 months, then we added gas while tuning, everything was screwed up, since we were tuning it on bad gas.
Old 04-18-2005, 07:53 AM
  #4  
TECH Junkie
iTrader: (36)
 
Black02SS's Avatar
 
Join Date: Oct 2002
Location: Kokomo, IN
Posts: 3,291
Likes: 0
Received 1 Like on 1 Post

Default

From what we saw this weekend, too damn long!!
Old 04-18-2005, 12:12 PM
  #5  
TECH Fanatic
 
WS6snake-eater's Avatar
 
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts

Default

I've seen that happen a lot too...Mine always seem to get pushed negative. I say about 25 miles.
Old 04-18-2005, 03:45 PM
  #6  
TECH Fanatic
iTrader: (1)
 
RedHardSupra's Avatar
 
Join Date: Sep 2003
Location: Laurel, MD
Posts: 1,904
Likes: 0
Received 1 Like on 1 Post

Default

i usually take 2 15 mins trips, and it's pretty solid after that.
Old 04-18-2005, 04:44 PM
  #7  
FormerVendor
Thread Starter
iTrader: (1)
 
HumpinSS's Avatar
 
Join Date: Feb 2002
Location: Waldorf, MD
Posts: 3,059
Likes: 0
Received 0 Likes on 0 Posts
Default

Does anyone have an explanation beside depressurizing the gas tank
Old 04-18-2005, 05:34 PM
  #8  
Launching!
 
God Forgives I Dont's Avatar
 
Join Date: Mar 2004
Location: Dallas Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default

I have to wonder if it isn't the added wieght of the fuel itself throwing off the trims. But stickly an uneducated guess don't have any facts to back it up with.
Old 04-18-2005, 05:36 PM
  #9  
TECH Fanatic
 
WS6snake-eater's Avatar
 
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by HumpinSS
Does anyone have an explanation beside depressurizing the gas tank

nope completely baffled over here...
Old 04-18-2005, 05:59 PM
  #10  
TECH Fanatic
 
WS6snake-eater's Avatar
 
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts

Default

anyone ever notice, that you get better gas milage the 1st half tank of gas? HHHHHHMMMMMMMMMMM. I wonder if the negative trims upon fill up have anything to do with that?
Old 04-18-2005, 07:47 PM
  #11  
FormerVendor
Thread Starter
iTrader: (1)
 
HumpinSS's Avatar
 
Join Date: Feb 2002
Location: Waldorf, MD
Posts: 3,059
Likes: 0
Received 0 Likes on 0 Posts
Default

LMAO i noticed that with my stock setup. The first half would go by slowly and then after the needle touched the half tank mark it seemed to drink that ****
Old 04-19-2005, 04:52 AM
  #12  
TECH Junkie
iTrader: (36)
 
Black02SS's Avatar
 
Join Date: Oct 2002
Location: Kokomo, IN
Posts: 3,291
Likes: 0
Received 1 Like on 1 Post

Default

Your car drinks the gas now weather you are above 1/2 or not.




All times are GMT -5. The time now is 09:59 PM.