I disagree, I think it to be worth it if you do other mods along with it on a stock engine. I did and a few other things like blue printing and such and I was called a liar when I posted the HP and TQ I got on the dyno. Tuning is everything with any mod. You may see less difference with the injuection, that I can't speak to as I don't run or work on those.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!