Hi so im a newbie an just bought a 08 jeep srt8 an need to say i love that thing an i just got a diablo trinity tuner was messing with it just dont want to mess anything up so can anyone help me with the best tune for my jeep i do have some mods like a cold air intake an a corsa cat back exhaust system i do run 91 oct an put the turner to that but it started chugging so i put it back to mpg booster tune an it stopped but i want the best tuner on it as far as idle fan throttle booster ect can anyone help a newbie understand his new srt8 please