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902 11-20-2010, 10:02 AM i have a 2003 lb7 2500hd and i have a lly complete with eng. wiring harness out of a 2004 2500hd. i am having trouble. the ecm plugins are different on the lly. can i use the lb7 ecm or what do i do about the wiring. i sure would like to talk to rick d lance. i heard he changed one. thanks for any help TheBac 11-20-2010, 02:52 PM Read this thread: http://www.duramaxdiesels.com/forum/showthread.php?t=16887&highlight=impossible It is possible to run the LLY injectors with the LB7 FICM, but its a lot of rewiring. It'd be a lot easier to use the LLY wiring harness and modules. Joeairforce 11-20-2010, 09:26 PM Moved to Frankenstein kappelmd 11-23-2010, 11:47 PM http://www.duramaxdiesels.com/forum/showthread.php?t=16887 I read through this entire thread and searched on dieselplace. Has anyone on this board put LLY heads on a LB7 and made it work? I am considering this when I replace injectors and add ARP studs. What performance and/or cooling issues would result? | ||