I've done both the tune and sprint booster...tune is great, the sprint booster imho, works well with the tune...i drive with the sb in the middle setting, i find that for daily driving the red setting is a little to responsive...
I have a new siren module, $229.00 including tax...cdn dollars...i pulled out the trunk foam...not that easy, but take ur time....trunk was dry....the pump looked fine...so i will gamble on the new siren working...if not, i will be going after each switch...doors, trunk, glovebox and hood til i find the
problem, wish it could be disarmed, without affecting any other stuff...let you know in a few days if it fixed the issue....bought the siren at the mb dealer....way cheaper that chrysler.