what should may air fuel ratio be
07-15-2012, 06:49 PM
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what should may air fuel ratio be hi, i have a 02 trans am ls1 with all the bolt ons. i just installed some new gauges and my air fuel ratio is at 14.60. i have a mail order tune and just wanted to make sure thats within specs. can someone that has experience let me know if its ok.
thanks,mike
thanks,mike
07-15-2012, 08:00 PM
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a/f ratio at idle it starts around 13.00 and fluctuates when i give it gas. once it warms up it stays at 14.60 even if i give it gas. it stops fluctuating and stays at 14.60.
07-15-2012, 08:38 PM
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It depends on preference. I set mine to run at stoich once its warmed up (14.62 here.)
So there is startup enrichment, and once it's warmed up it leans out a little and runs at 14.62. Dialing my PE (POT) in now to 13. Should richen up a tad on WOT.
But yours sounds like it's dialed in the same.
So there is startup enrichment, and once it's warmed up it leans out a little and runs at 14.62. Dialing my PE (POT) in now to 13. Should richen up a tad on WOT.
But yours sounds like it's dialed in the same.
Last edited by bayer-z28; 07-16-2012 at 08:46 PM.
07-16-2012, 02:45 PM
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As for what the numbers should be (when using a wideband sensor/guage) on a bolt-ons car, 14.5-14.9 is target range for idle and part throttle. When the engine is under load and power enrichment kicks in, 12.7-13.0 is target range. Higher numbers are leaner and you don't want to go leaner than 13 at WOT.
