as an enthusiast you really shouldn't make suggestions about garden hose...yes I saw you wrote jokes after it BUT there are people out there dumb enough to try that.
so here is the way you would like other people to check for that leaks......of course you already know this but for the benefit of others we will write it.
fill cooling system with clean water...best if de-mineralised.....fill completely with engine running.
attach the radiator cap....and allow the engine to reach operating temperature.
drive the car onto a hard level surface...chock the wheels and apply the parking brake.
switch off the engine...then and only after it is switched off begin to look for the leaks.....there are two steel lines that go down and attached to the turbo. these lines have rubber hoses attached at the ends up near the thermostat.
find the leak and order the correct hose from travis..or a mitsubishi dealer..not a bit of garden hose. first becasue it wont hold pressure and second because the hose will most likely be a special shape with bends etc
