Ya if you are using efilive then I would run a 97-02 pcm. I dont think it is a p11 though. I thought the p11 was the 02-05 ecotec. But there are some better tables in the 97-02 pcm. If you use a flex fuel file, injector flow rate is in there. Efilive forgot to include injector flow rate in the non flex 97-02 pcm. Also from what I see there is no injector flow rate in the 02-05 ecotec pcm supported either.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.