A/F ratio question

[The_Joker]

On a supercharged car what is the propper air/fuel ratio to have? And what are the dangers of having one that is too high?

 

[anthony05gt]

My a/f ratio is 11.6 at wot. On the 3-valve engines it is very important to have the proper ratio while under boost or you will have a useless engine block when it blows. On the other hand, running too rich will cause it to code repeatedly on you. I wouldn't mess with it if that's what you are thinking. Have an experienced '05-up tuner do any changes to your system.

 

[mustangmike6996]

stoichiometric air fuel ratio is 14.7:1 that is the most efficient for power and economy.

 

[JTGrant]

14.68 to 1 is for cruising not for WOT and it is ideal for emissions.