Welcome to just answers my name is Kevin
What weight oil are u putting in?
I DID BOLTONS CAI HEADERS ETC YES AFTER THAT THE NOISE IS MORE APPARENT I THINK BECAUSE THE MOTOR IS PRODUCING MORE POWER BUT MARVEL MYSTERY OIL IN THERE NOTHING CAN BE HEARD
all u would be hearing then would be the lifters. If u hear the rods knocking is would be a deep skirted sound. Humm 5.7 has been known for low rpm noise like that now if the upgrades changed the dynamics of the flow it gas and exhaust that could be why u hear it more now to. The MMO is a good detergent for cleaning out things like lifter junk.
I would just keep up with the MMO but thats me.