Tune change just needs to be in the injector constant. Change it to roughly 42# and put some miles on it. Make 1 adjustment after getting a good idea how far off percent wise it is at cruising speeds. I usually rely on medium loads and higher than normal rpm to collect the most accurate data from the o2 sensors.
I do have a tune prepped with the injector tables modified. I am still curious why I shouldn't change the stoich. Table though? I would think I could just change stoich and PE table and be done. Is it true that the stoich tables don't work well in the 3800 PCMs?
1998 GTP sedan: sold, 1999 GTP coupe #1: sold, 1999 GTP coupe #2 on E85: totalled
2002 GTP sedan: 3" downpipe|PLOG|poly mts|160 T*|60# Injectors|ZZP Intake|1.8 YT RRs|Ported Gen3|Ported ZZP S2 TB|E85|FP rewire|ZZP FSIC|WP UD Pulley|2.8 MPS|HP-Tuners