what tunercat tables are best for adjusting fuel? actual tables, or what about adjusting the fuel injector setting in the constant section? mine is set at 32.something lb. and my injectors are ford 30lb. is this setting right? if i want to add a little fuel, how should i go about doing it? i was driving around earlier and my fuel pressure was about 36-37psi and a couple times when i stepped on the gas i got an intake backfire.

 

The ford 30# are rated at 39 psi to flow that much, our injectors are rated at 43 psi. That will make the ford injectors flow at 31.7 in our car, so 32 is correct. The 36-37 psi is under cruise, at WOT it should be around 43 psi, or you can disconnect the vacum line and it should read the same as WOT.
Haven't seen tunercat, but I guess it's very similar to lt1-edit, there are 2 tables called PE or power enrichment one is rpm vs. % change and the other is coolant temp vs % change, this is where you change the fuel ratio for WOT. At part throtle it should be in closed loop and the ratio maintained by the pcm at 14.7.