It's been a while since I've been here, hello everyone!!. My question is this. Diablo is offering the T-1000 tuner for the 2012 Challenger R/T 5.7 . Should I invest in it? I have made several performance changes to my challenger but this will be the first I try to re-tune the engine. They say they come with pre tune codes or you can customize. Any advice will be most appreciated.