Tune Or No
Yes, get a tune. It will help shift extension, lockup, and keep the engine from hitting the limiter.
I ran a 3000 2.0 stall converter for over a year w/o a tune, and the only issue I had was a lazy lockup on the freeway.
By this, I mean that most of the time I would have to drive a good mile at 55 plus mph before the converter would finally lock up.
Everything else was fine.
I would drive it for a while and see what you think.
If you are planning other performance mods in the near future, and your car drives okay you could wait for a tune.


