Context I'm asking about AFR in the hemi forums, but some twat told me to come in here.
I figure you guys may be more helpful.
Q: How do we pick a target AFR in general?
It's great if someone tells me "Running an AFR of 12.2-12.4 is ideal for engine X."
What this doesn't tell me is how someone reached that conclusion.
How do you find an AFR range for any engine? Start from stock and work from there?
I have also seen multiple people claim "See what the car responds best to."
What data are we logging here? Butt dyno? 0-60 E.T?
I'm looking for a measurement here.
Q: What is an acceptable range of AFR values? 0.5? 1.0?
Going from 13.0-12.0 seems like a large swing.
Going from 12.4-12.2 seems like a small swing.
Maybe I am over emphasizing the importance of AFR, but i don't understand how we figure out what AFR is best for any given engine.