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  • SN95 4.6L Mustang Tech

air/fuel ration

  • Thread starter Thread starter jt98boost
  • Start date Start date Aug 28, 2005
J

jt98boost

Member
Aug 2, 2003
167
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United States <><>
Aug 28, 2005
#1
  • Aug 28, 2005
  • #1
air/fuel ratio

What would be idel air/fuel on a centrifical supercharged car at wot, I heard blower cars need to be a little richer at wot on the tune. 12.1 sound good?
 

blackink00

I missed a shift & stole Curt's money.
Mar 30, 2005
545
0
0
Tempe, AZ
Aug 28, 2005
#2
  • Aug 28, 2005
  • #2
whats a ration and 12.1:1 is pretty low
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
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134
Aug 28, 2005
#3
  • Aug 28, 2005
  • #3
Did you install the s/c? Have you had it professionally tuned after the install? Were you using a wideband (real) o2 sensor?
 
J

jt98boost

Member
Aug 2, 2003
167
0
16
United States <><>
Aug 29, 2005
#4
  • Aug 29, 2005
  • #4
Yes, it was professionally done, but I was going to ad a power pipe and maybe a small shot later, but power pipe to start with. Currently 11.8 is a/f at wot, I fiqured power pipe might put it a 12.0:1. I have a lm1 wideband that I am going to use to double check my a/f after the power pipe install this week. I also have a msd-dis-4, I don't think I should mess with timming with just a power pipe, but If I do spray a small shot I fiqured I would drop a couple degree of timming using the msd-dis4, What do you think about that sound good ???
 

mr. jones1

New Member
Apr 2, 2005
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0
NJ
Aug 29, 2005
#5
  • Aug 29, 2005
  • #5
sounds OK, my tuner said 12.0/1 was Ok but no leaner. even 12.5/1 is dangerous.
my car had the pipe from the initial install so I don't know how much the ratio will change. the pipe does help boost so be careful.
 
M

mac1009

Founding Member
Feb 17, 2001
187
0
0
Atlanta, GA
Aug 29, 2005
#6
  • Aug 29, 2005
  • #6
I'm right at 11.5:1.
 

forpit2000gt

Founding Member
Jun 30, 2002
2,490
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0
Columbia, SC
Aug 29, 2005
#7
  • Aug 29, 2005
  • #7
11.5 - 12 to1 should be good but I would take and have tuned when you get the pipe on. Do you have forged internals? You will be a lot safer, especially with even a small shot with a good tune.
 
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