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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 using the ve table and not have to go back and change my constant mpw of 1.654 for 36lbs injectors?
Thank you for your time.
so you had tuned it based on a weak fuel pump?
a weak fuel pump would probably not affect the entire operating range the same, it should have increasing effect as fuel volume requirements increase
if the change in fueling is across the board, you might as well change the constant, but the VE table works too. if it's only in one region, change the VE table
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 then from there it went lean to 13.8 from 4700 to 6000rpm at the shut off point for the dyno. It was only 302 hp and 376 tq with the bad fuel pump and I've not had it on the dyno till I get it closer to what should be for the new pull on dyno. So with the ve how much should I bring it down to get 1 point on the AFR or should I go to the maf tables and change it there?
Thank you for your help.