fuel being eaten like running out fashion

hi new to forum own p38 4.6 with l332 light upgrade and body kit with 21 inch stormer wheels will post pic when i get some decent weather just quick question does any one out there know the correct setting for the fuel injection co ,only owner befor me screwed the air screw in to stop it hunting insted of getting a diognostic which would have told him airflow meter had gone have now replaced but need to reset fuel mixture with gas anerlyser

upto 99my 1.0-2.0%
99> 0.5-1.0%

many thanks mark now all set dont need petrol tanker behind me andy