i noticed a big diff going from my NA-T back to NA haha! and that was without a tune in the NA-T state...even still, for a fairly stock 2.5ltr 6 im happy with it. after all, it gets me from work to home to my girlfriends house everyday. one day when i have more many and a garage id get a turbo, but for now non turbo suits fine. plus it sounds a fair bit tuffer than a turbo(}tho i do miss the burble of the turbo )
at the end of the day, like a few other people whov posted in this thread, i love my NA 33, sure there are newer, quicker, more expensive options, but this suits me just fine, and imo looks great. it still turns heads, even if it is 15yrs old