Originally Posted by
traviz06
I am not new to tuning, but new to tuning gm ecm's. I have done megasquirt and holley efi before.
Where do I begin? I set basic perimeters such as when fans turn on/off. I have messed with idle to get it to idle nice. I have just about adjusted the throttle cracker good so i don't get a hanging idle when coming to a stop. (it hangs about 1200rpm before dropping to 900) acceptable for now.
Now I need to get my WOT tuning dialed in according to my afr gauge. I have an innovate wideband. Cruising under normal driving conditions my afr swings from about 14.5-15.1. WOT my afr starts around 11.8, drops to about 11.1 and then at around 5800 sharply starts leaning.
Since this is boosted, I can't rely on a VE table, only the maf table. The trouble I am having is understanding how the maf table translates to rpm. What is the best route for figuring out where in the maf table I need to increase/decrease fueling for a targeted 11.3:1 AFR ?
my PE table is set to 1.30 all across the board