I heard that 1,000 times. Then I put a 32x24x4 thick cooler on my SRT4 and it did EVERYTHING better. Maybe with a proper turbo setup you can go too big, but dealing with a tiny turbo that's pumping serious heat due to being past its compressor map, over sized coolers really seem to help.
Funny, the $800 spearco cooler for the srt4 performed worse than the $385shipped ebay cooler with the stock turbo. The better flowing core had the air moving too fast through the cooler. Once they went to a high cfm turbo, the spearco did much better and proved its money worth. Moral of the story is... If your putting a GT35 on your fist, you need a big money core. Other wise, you need a dense cooler that cools the very hot air your putting into it over max flow. In our case, weren't not maxing flow or cooling (yet). The charge temps fist guys complain about ( including me sometimes ), are no where near what turbo cars used to see with stock turbos and intercoolers. I bet the 1g and really the 2G dsm guys had some insane charge temps.