Yes, the stock tune has worked for me, but i think i am among the few to be lucky. I will be honest, upgrading the magnacharger isn't the easiest. basicly all that can be done is swap out the upper 3.0 to a 2.8 to get 7 psi, that should roughly put you at 370-400 rwhp depending on mods.. there are few other things you can do as well..

So I take it the stock tune worked right out of the box for you then? Thats what I'm looking for, a kit thats a good price with good #'s and no issues. How upgradeable is the magna charger incase I do decide I need more power?

If you have any other Question about the magnacharger shoot me a PM..