The Saab we recently bought came with no intercooler - but with a boost control valve as part of the setup. Apparently they had either or. Anyway, we've bought an intercooler and a freeflow airfilter (which we're told actually makes a difference in this case). So, intercooler, filter and a remapped ECU courtesy of
So, no questions here - just a couple of worthwhile mods. (IMHO)