HI all, just want tu clear up some things , if my can run lean , what do i have to change on my eprom bin , afr? injector pulse? maf table ? therse alot of ways , i think to do this but i want the right one thanks for ur help guys

 

Your AFR (air fuel ratio) is controlled by the O2 sensor in closed loop.

The tune (oem stock or custom) gets it close, then the O2 trims or fine tunes it. This happens within a range of 108 to 160 Blm's, 128 being the middle. At 160 the ecm is adding additional fuel to the programed amount and at 108 is removing fuel from the programed amount.

At WOT fuel is increased or decreased by the Power Enrichment tables (MAF). A wide band O2 sensor is recommended to tune this area.

 

ok thanks , so if i want more i must play with the PE table and sure , i will get a WB o2 sensor this will helps oh bdw if i want to increase the timming , should i increase it 1 degree at time or globaly raise and get it down if i see knocks ?

 

Get a laptop and cable and start by data logging.

You have to know where you are, to get where you want to go.