So honestly, you guys that have the APR Tune. How big of a difference is it over stock. It almost seems to good to be true to get 250+ hp and 300 ft lb. of torque for only 600.00.
So is it a really large difference or is it just a little extra oomph.
Also just FYI, I'm in Texas so we run 93 here, not that crap 91 stuff.