im runnign the n/a cams not to much by choice by more so since my turbo cams were thrashed, the jurnals did what they do..
my brother's car has the turbo cams in them.
really you cant tell a difference by the seat of your pants,
when i first put them in i was more aware that i was able to break my tires loose easier at lower rpm's but thats about it, i couldn't tell any diff at the top end.
i would not consider them an upgrade, just a decent replacement if needed.