no need to go to town, over tightening fails IMO... the torque setting is specified for a reason. if the bolts are coming undone, your doing something wrong.
Use a hi strength thread locker... you can usually get low, med and hi strength.
Torque to factory spec or as per instructions and torque in the correct pattern.
would advise applying torque in 1/3'ds.
eg, final value 60nm, start with 20, then 40, then 60.
if using arp gear, and dont have the spec sheet...