The standard intercooler is no good for any more than 14psi.Even at that the charge temp's will be sky high.
Half the problem is that it's tucked out the way and not getting much cold airflow to it.
Never heard of the standard one being better than an aftermarket one mate.After market one's are generally at least twice the size,so therefor getting better air to it
The colder the air is reduces the chance of detonation