As far as your transmission exploding, the TW has trans settings that won't harm your slushbox.
Now that right there is funny!!!!! I need the little head rolling around here!!
TW as well as DP and any quality tuner will adjust shift patterns and line pressures with their tunes, but this in no way is a guranttee that your slushbox can handle the extra power!! As I have said over and over again, There are No Crystal Balls!!!! If you have a tuned VB you need to tell the tuner this because they will leave off many of the trans variables. There are two ways to tweak the stock trans, electronically and mechanically, but in the end there is no gurantee your trans is going to last 150K, or 15 K or 15 miles for that matter. Just as there's no guranttee how long a stock trans will last. If you take advantage of the extra ponies at every stop light I promise you your trans will give up the ghost soon. The 4R100 is the weak link in our powertrain.