I have been trying it out with the Mini Maxx since the 6.4.28 update( has built in 0-60 timer) but I cant keep traction!!! I have not tried it in 4H yet....
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!
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