Agree!! its much better to have one really good tune such as the h&s or spartan, rather then a pile of crappy ones.Stacking crappy tuners might end up trashing a $14,000 motor. But if your happy, keep what works for you.
The stack works on mine. I get 8 sec with just one and the other gives me another sec. But im not boost launching either
I dont have a Spartan but from the concensus on here, they are right there next to H&S with their quality tunes. You will be impressed, especially after running crappy tunes. Money well spent in my opinion. The continual R&D that is behind these HS and Spartan tunes is ridiculous! Fuel mapping and air ratio mixtures, ect. are too important to leave in the hands of a crappy tuner!Just bought a spartan phalanx. Now I need to get rid of the egde juice and race.