Quote:
Originally Posted by Black kNight
I wanted to ask
why most cars A/F ration from factory comes rich ???
and can someone help with more Info about A/F ratio so I can understand
Thanks
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the main reason is b/c they don't know where teh car is going, your a/f ratios will vary greatly running in 100 degree houston weather, than 30 degree Chicago weather........
When the air is that dense in the cold you need more fuel to compensate.........so I'm guessing they "tune" the stock ECU to handle those type of A/F rations b/c it's better to run rich then lean like most have mentioned.....