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  • SN95 4.6L Mustang Tech

a/f ratio question

  • Thread starter Thread starter StangLou
  • Start date Start date Jun 12, 2004

StangLou

Active Member
Jul 9, 2003
1,264
0
36
Holly Springs, NC
Jun 12, 2004
#1
  • Jun 12, 2004
  • #1
Ok guys, I was bored today and started looking at my dyno graphs. On my a/f chart with my L/T's, my car starts at about 15, then drops to about 14.2 at its lowest point.
My question is what is a good a/f ratio for our cars?
I know the timing on mine was bumped greatly, so much in fact it sparked knocked a bit so we took it down 2 degree's and its fine. That was way back when I got the gears put in. The same tune has been on my car since then.
What is a safe a/f for our cars guys, if I can have it tuned to squeak out some more power, I could have some dyno time coming up Tues
 

neoclasiccl

Founding Member
Jun 1, 2002
3,043
0
57
Help I can't see !!!!!!
Jun 12, 2004
#2
  • Jun 12, 2004
  • #2
that's lean. On a N/A car mid thirteens is about as high as you want to go.
 
C

CottonBurnerz

Banned
May 10, 2003
1,554
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0
Drink and Drive = Teh Lose
Jun 12, 2004
#3
  • Jun 12, 2004
  • #3
mine's around 12.5 all the way.. Tim told me that it will lean out once I added plenum/tb and pulleys. The ideal a/f ratio for n/a is 13.1:1 or so I think..
 

KaPPaBaLL

New Member
Nov 28, 2003
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BAYAREA
Jun 12, 2004
#4
  • Jun 12, 2004
  • #4
HOT HOT HOT!! Hope your car is ok
 

StangLou

Active Member
Jul 9, 2003
1,264
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36
Holly Springs, NC
Jun 12, 2004
#5
  • Jun 12, 2004
  • #5
Its ran fine for over 4-5 months like this Maybe Im reading the graph wrong or something
 

StangLou

Active Member
Jul 9, 2003
1,264
0
36
Holly Springs, NC
Jun 12, 2004
#6
  • Jun 12, 2004
  • #6
DOH!!! Damn X's
 

StangLou

Active Member
Jul 9, 2003
1,264
0
36
Holly Springs, NC
Jun 12, 2004
#7
  • Jun 12, 2004
  • #7
This one works finally



This is my baseline which trails down to a level you all are talking about, and yes I know its STD, SAE #'s in sig.

My graph with L/T's (not online) stays pretty much straigh across.

Guess Ill take it in Tues and do a pull and see what it looks like again

If it was that bad wouldnt something have went awire by now?
 
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