Duramax First Generation: 2001-2004 (LB7)
Alright this is a Bible post but i need help on a customer’s truck.
customer states the following-
Super long story but I'll try to hit the basics here. 2003 lb7 federal emmsions truck, deleted, tuned, I rebuild top end with reman injectors, cups, drop in ddp 64 mm, fass lift pump, intake...