people who say this are usally are in the lower bracket of power bands, once u start pushing the limits of a factory/aftermarket turbo....ull see the problems.
which is fine because a cheap cooler kit will proberly give them more then wat they want. but if ur moving to the next step i highly HIGHLY recommend a properly researched/contructed kit. eg BLITZ/HKS/ARC
i bought one of of the Just Jap Cooling pro kits for about 300bux wen it was on special, i thought awsome a new cooler for 300bux.
i really regret it now as the quality is just lame, planing to eventually get a HKS or a ARC cooler.
you get wat u pay for, as they say.
i probelry woudlnt bother as much with plazmaman, they are proberly great but i think they are proberly a bit $$$ compared to something like a Blitz/HKS/ARC cooler which are at the top of its class. id stick with those since they are 100% bolt ons.
just curious what are your goals with the car?