I get 24 mpg on my Greddy kit driving like a maniac and running 91 octane pump gas. I haven't had to touch my internals and I have spent a little over $3k and am pushing about 210-215 whp, so you decide. N/A is much more work, but if you want a challenge and a money pit for subpar results, be my guest.

If you don't have to deal with smog, why not go for a better kit that will give you a bigger kick in the balls, like one based off the T3/T4 turbo? The Greddy kit is only good for smog standards and it's super fast spool up.