worth it to get a tune with no mods?

Originally Posted by JARblue

A sprint booster is a cheap shortcut to the throttle response issue and is an apples to polar bears comparison to a proper engine tune.

You get a lot more out of a proper tune that will help your car run better for longer (assuming a good tuner), such as proper AFR and other misc adjustments your tuner can make. That's totally aside from the RaceRom features that Ecutek offers like mulitple custom tuning maps for various needs, launch control, and custom traction control.