I am very new to tuning but i built my daily driver an 88 landcruiser with the new 5.3 erod. I have attached a scan file and my tune file. I keep tripping a lean code on both banks at idle. it is the factory tune but it seems my long term fuel trim is very high. thanks for any help.third scan.hplstocktune.hptthird scan.hplstocktune.hpt