ok so here specs
Ka24e rebuilt never any problems
dual Efan dual core racing radiator
T3 turbo top mount
with working Ac system still has it efan as well
now never had issues of over heating at all
the car will only start to overheat with ac on underload
car under load no ac it fine
car parked AC on and fine
we flushed new thermostat
we have no clue what to check
...