Quote Originally Posted by darkhorizon View Post
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?