You would NEEEEEEED a tune.
Could you run it without one? SURE! once... twice? ten times? who knows.. all depends on how far off you A/F is with those shots.
So.. is it POSSIBLE to put it on without a tune? sure... but its also POSSIBLE to drive through a brick wall in your car like they do ion the movies.. doesn't mean there won't be any damage done.
If $200 is enough to sway you not to purchase that setup, then I suggest you take a little break from the performance bug for a bit, save up some more cash and do it right, when you can afford it without worry. You'll be glad you did. Rush this, and you may be paying for it for a LONG, LONG time.
