$.02 Here is what I have found:
The RAD is the ONLY thing that will completely eliminate torque managment on a 01 or 02 auto. The Smarty does reduce it however. The older RAD's had a three position switch, the newer ones have a two position switch. On the newer ones it still eliminates the top speed limiter even when it's off, so it doesn't need the third position. The RAD doesn't extend the rpm, just the mph. I under stand not wanting to lose the use of gauges, but I typically don't have time to be watching them during competition anyway. On the newer RAD's you can turn it off after it hits third gear anyway, and the gauges come right back on.
The only thing I have found that will fuel hard to 4000 rpm is a red line box. My drag comp starts to defuel about 3100 rpm, a TST comp about 3400 rpm, and the Adrenline about 3600 rpm. This is all based on 1/4 mile passes and not on a dyno. The defueling detection is based on boost and EGT reductions. The question is why do you need 4000 rpm with an auto, when drag racing? 4.10 gears would be a reason...
The Adrenline has great potential. Will it surpass a $2000 drag comp/redline stack? I don't know yet. It does spool very quickly. This is still a best test. It has not yet surpassed the drag comp/redline stack to this date, but the testing and development are not over. It does perform on par with a drag comp. Another question is reliability. I can't afford to lose rounds because of part failure. I can lose enough on my own.LOL The only way to know this on a new product is by testing it.
For bracket racing I like the drag comp/redline stack the best so far. The comp is adjustable for bottom end fueling (launch), and the redline for everything else. The combo makes it easy to build and hold boost, and adjust launch fueling so that I can leave at a higher boost (for reaction times), while having control of over powering the track (drag comp power level, ie. CAN bus fueling). The redline only adds fuel (at least a significant amount) when over a certain throttle position. The redline allows you to adjust the fueling going down the track to find the "sweet spot". My pickup runs the most consistient at up to 93% fueling. Over that, and consistiency falls off.
This is just my $.02 worth, and what I have found on my truck. As we all know every truck is just a little different.
Paul