that was a short log, get some hyway log time you might try the chip eagle mark adjusted and see if it is closer. the blm proble go up as you are driving most chips I have had in my v6 would have blms in the 140's till I changed the ve table. also 4.3 v6's run a higher scotck number .512-.540 instead of .451 like v/8's for some reason. when the egr is called for it will cut the pulse with down causing blms to raise . it is proble in the tune int. trying to take away fuel, blm trying to add fuel I only seen a short idle log.