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

9.8:1 Afr

Thread Tools
 
Search this Thread
 
Old 04-25-2006, 10:03 AM
  #1  
TECH Fanatic
Thread Starter
iTrader: (2)
 
camarokid94's Avatar
 
Join Date: Dec 2004
Posts: 1,154
Likes: 0
Received 1 Like on 1 Post

Default 9.8:1 Afr

i hooked up my dyno tune wideband lastnight and went for a ride. at WOT its at 9.8:1 is that right stock tune and injectors. racetronix pump and longtubes whats the deal.
anyhelp would be great thanks guys
Old 04-25-2006, 10:12 AM
  #2  
TECH Addict
iTrader: (24)
 
Haans249's Avatar
 
Join Date: May 2005
Location: Fort Worth, TX
Posts: 2,045
Received 4 Likes on 4 Posts

Default

I'm guessing with your new pump, you're pulling much more fuel pressures, and its causing too much fuel to be dumped, you're going to need to adjust your tune.

Best Regards,
Adrian
Old 04-25-2006, 11:33 AM
  #3  
TECH Fanatic
Thread Starter
iTrader: (2)
 
camarokid94's Avatar
 
Join Date: Dec 2004
Posts: 1,154
Likes: 0
Received 1 Like on 1 Post

Default

great thats awesome. oh well HP here i come
Old 04-25-2006, 11:51 AM
  #4  
TECH Resident
iTrader: (32)
 
ls1mongrel's Avatar
 
Join Date: Oct 2005
Location: Lakeland, FL
Posts: 842
Likes: 0
Received 0 Likes on 0 Posts

Default

YOu need a tune, the longtubes will make it run rich like that !
Old 04-25-2006, 12:33 PM
  #5  
TECH Fanatic
iTrader: (4)
 
white2001s10's Avatar
 
Join Date: May 2002
Location: Fairview Heights Illinois
Posts: 1,851
Likes: 0
Received 0 Likes on 0 Posts

Default

That's way too far out of range. I'd double check the accuracy of your wideband.
Old 04-25-2006, 12:47 PM
  #6  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes on 6 Posts

Default

It's not that far out of line for, say, a car with the stock
commanded 11.7:1 AFR and some jacked fuel trims from
headers. +15 LTFTs would about do it. Looking at the
idle AFR on said wideband would be instructive though.
Old 04-25-2006, 03:04 PM
  #7  
TECH Fanatic
Thread Starter
iTrader: (2)
 
camarokid94's Avatar
 
Join Date: Dec 2004
Posts: 1,154
Likes: 0
Received 1 Like on 1 Post

Default

at idle it jumps from 19.9 to 9.8 once in a wile it hits 12 or 15:1 never steady 14.7 just jumps back and forth
i just installed it last night and programed like instructions said.
Old 04-25-2006, 08:22 PM
  #8  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes on 6 Posts

Default

It should "flicker" because the engine bounces fuel
around in closed loop. If you turned up the smoothing
it ought to resemble 14.7 (if this is something you can
do in the handler interface program). But at least it's
bouncing on both sides of the right answer, so it's
alive and not completely ridiculous.

What does the scanner show you for WOT fuel trims
whilst getting this low AFR?
Old 04-26-2006, 10:04 AM
  #9  
TECH Fanatic
Thread Starter
iTrader: (2)
 
camarokid94's Avatar
 
Join Date: Dec 2004
Posts: 1,154
Likes: 0
Received 1 Like on 1 Post

Default

im gonna check my LTFT tomorrow




All times are GMT -5. The time now is 01:00 AM.