What a/f ratio is considered dangerously lean? All motor.


[Modified by MPH, 10:08 AM 3/15/2002]

 

13.1 is a good bang-for-the-buck ratio that you can run all year (yesterday 80 degrees, last night 30 degrees). 13.5 is doable too, but I like to know I will not have any problems or have to adjust. 14.1 is perfect, but lets face it - who has perfect conditions on the street.

I'm up to 81,000 miles - no fuel related problems. (btw - ignition timing for me is 17.5 degrees)

 

Most all the cars I have ever had on the dyno made best power between 13.1:1 and 13.3:1.. except for turbo.

 

my A/F was between 14.2-12.1 right Mike

 

when we rolled in, you were 13.5-13.7:1 on the top end.
V-AFC fixed that... fuel pressure didn't do squat.

you left at the same as my car, 13.1:1

 

IMO, 14.7 anything higher will be dangerously lean, but like everybody else says 13 is where you want it.