I got my JLT/tuner package from JLT directly. Compared to others I would say mine is a pretty safe/not overly aggressive tune. I noticed a huge improvement in seat of the pants feel but I have only been able to break the tires loose in 1st and 2nd but maybe I got one of the not so strong motors from the factory. However, I've had it in the car for 2 1/2 yrs and haven't had any issues/codes thrown. I would like to get a dyno tune though.
07 GT Prem Vert, Vista Blue, Charcoal Int w/ Satin Alum Trim, Manual, 3:55's, 18" Polished Wheels Mods, Appearance: MRT two-tone light bar, Midwest Auto mirror covers and radiator cover extensions, Billet E-brake handle, cupholder trim, map light accent, door locks, door lock grommets, door sill accent plate bars, & mirror control kit, Roush spoiler, shift knob & floormats, Custom painted plenum and fuse box covers Performance: JLT II CAI w/ SCT XCAL2 93 tune, GTA's