QUOTE(newby1gsx @ Jul 18 2008, 01:46 PM)
52 is a small 16g and the 47 is the big 16g... i'm lost their.. why is one small and one is big? whats the difference?
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52 is the small one but 42 is the big one. 47 is the Evo III.
the difference between the small and big 16g is not much. bottom line, big 16g will hold boost better to redline, and the small 16g will privide the best boost in the mid range. The small 16's compressor wheel is just slightly more efficient but since it flows less, they pretty much match up the same