Does changing the AFR from 14.736.... lean or enrich the fuel mixture accross the board? I would assume that it does, but has anyone tried it? If so, what were the results?

 

i was looking at that today too, but i was changing so much stuff today to get the cam and shift points set i didnt want to confuse myself with it LOL <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Jerry

 

I'm wondering would that help a car with a cam pass emissions by leaning it out just a bit more if you choose something around 15.3?

 

Today, I changed the AFR to 15.0 and then logged some Atap runs. The exhaust seemed to smell better (a bit rich for quite awhile due to the Hot Cam and now the TR224) and saw WOT O2's at .920. Went to 15.3 and got O2's of .930. Also noticed that LTrim's were getting a bit more negative as the AFR went higher. Seems to run a bit less rich at idle now. Might try 15.6 tomorrow and see what happens.

 

I think you should alter the VE tables, as the AFR you are using is to maintain the 14.7 AFR while in closed loop, i think it willn't help you get you Rich condition under control, and like i said i think you better stick to the VE Charts to alter you Mixture.
First get you ltrim's to around 0.
I hope someone else can shine some light on this if i'm wrong?.