[Fasterthanyou]

AFPR are for tools or people that can't afford larger injectors. I know that's harsh but I've got reasoning and no, I don't ACTUALLY consider you a tool, it's just me pushing a point without using curse words.
For only $40 more you'd have your burner and chip adaptor to retune your own chip controlling the AFRs based on RPM. An AFPR will only shift the WHOLE afr curve up or down. This is fine if you're just playing the dyno horsepower game. But for $40 why not have it so you can richen up the 4-5k range and leave the less than 4k rpm alone? Yes it's more difficult and takes more time than just turning the fuel pressure but it's a hell of a lot more fun when you don't screw up your cold starts .
I'd say you're near spot on with the afr but unless you try it either way you'll never know. I personally shoot for a 12:1 below peak torque and blend it into a 12.8-13.6 (depends on engine specific output) at peak torque and then back down to the mid to high 12's at high RPM. That's my start, then I try richer, compare the graph, then I try leaner, compare and make the required adjustments. I also isolate the timing because SA can hide a lot of horsepower if it's not utilized.