A/f 11,2 and 12 so difference for acceleration.At 11,2 is better than 12.What wrong with my engine? It should be better 12 than 11,2.
For A/f 12 got easy start engine,more loud exhaust,Doesnt pull my head for accel.
For a/f 11,2 got heavy start engine,exh sound more deep,more power for accel.
Why?

 

Please restate that post. I have half an idea of what you are trying to say, but I'm not real sure. A/F really has nothing to do with the sound of the engine. Your numbers don't seem correct since stochiometric A/F mixture is 14.7:1. Most engines are tuned around 13.5:1 so the mixture is a little rich. 11.2 and 12 are very rich and should not run properly. Make sure that your readings are correct, fix your signature to have your vehicle info and let me know if there's any development.

----- just noticed the turbo ...... you need to fix the sig! I'm not sure if you need a richer mixture since you have a turbo, but I wouldn't think so. When you fix the sig, people with turbos will probably comment.

 

I'll answer as soon as u givea little more info on ur car. im pretty sure i can help... fix signature and ur ready to go... ;P