My whole thing is that I'm replacing the injectors anyways, getting everything I can freshened before I go on and add some of the more intensive mods. I was thinking that if I'm doing it anyways, I may as well upgrade.
My next step though is a new O2 sensor, then an upgrade to MSD coils and wires.

The AFC I was interseted in because the last time I had my car on the dyno they ran a tailpipe sniffer and I registered as a bit rich.

I say go for it if it makes you feel good inside, I probably would too.