Well the first reason that I ask this is cause it is from off idle to 6300 rpm as that is my shut off point. The reason I changed fuel pumps is on the dyno it showed 12.7 in pe mode until 4700 and...

Hello I have a 383 with 36lbs injectors and replaced fuel pump and by doing so it took my afr from 14.9 to 13.4 and that is warmed up to temp. So my question is can I lean it back down to the 14.7 by...