As Levi indicated A/F is just the default from the Dyno shop. With the run file it can be changed to Lambda, still indicates the same thing, need more fuel.
As far as injector size, keep in mind we are in Denver. Because of our altitude we only have 80% of the air (and fuel) going into the engine as you would at sea level.
My chip is currently the base upgrade for stock engine with light weight flywheel. Since I have added headers and cams (which bumped my HP quite a bit) I probably need to get a new chip that better matches the engine. Steve offers custom programmed chips tunned to your engine.
john