IMO, if your are looking for performance gains don't waste your money on Superchips. I have never noticed any difference with Superchips, except for a slightly quicker shift at hard/full throttle. If there are actual measurable (dyno, 0-60) performance gains you will not be able to notice them as they are very small. In fact, this dyno comparison shows Superchips was slower than Stock.
Super Chips worth it or not
The best thing about Superchips is the data logging, ability to read/clear trouble codes, set the tire diameter, and increase the speed limiter.
If you want these extra features, than a Superchips for around $100 or less might be worth it.
There are a lot of raves for the Predator (just like there was when Superchips first came out). I think the Predator data logging capture is a little more cumbersome than Superchips, as you need a laptop in your car.
I don't think I have yet seen a convincing Predator dyno on a
stock 5.7L that shows an improvement in performance. There might be one, but I can't recall seeing it. I would get a Predator if there was a proven 0-60 gain of 0.2 to 0.3 tenths of a second on a stock 5.7.
