This post is a good example of what I'm talking about with the different personality.
http://www.e90post.com/forums/showpo...postcount=1580
Quote:
FBO stock turbo with meth map 3 349 WHP and 489 WTQ
FBO Pure STG1 with Meth map 6 400 WHP and 480 WTQ (16.5 PSI peak)
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Notice the torque numbers are very similar, this is because the peak torque comes in at lower rpms where the stock turbo is able to perform well. The HP numbers are much more different, though, because the stock turbo can't hang on into the higher rpm's for those.