anyone know a bootup command similar to what we use for the hackable crate to change the timer on the mlrs from 10 mins ???

Not sure but try this command "brokenDownMinutes" Found this in the latest devblog now...
 -> Press button to fire. The MLRS will shoot all the rockets you have loaded, and break down for 10 minutes (or whatever the brokenDownMinutes console variable is set to).

thanks it worked 

mlrs.brokendownminutes 1 
1 minute cooldown 

so i went one better and did 
mlrs.brokendownminutes 0

Now it never breaks down :)