Anyone have exe with JDM performance chips?

Anyone have experience with JDM performance chips?

 

How does this product work?

Using your OBD on board computer port - plugs right in - our product modifies signals sent to your vehicles ECU computer. The module optimizes functions such as ignition timing, air fuel mixture, fuel maps and produces more power and better gas mileage. The ECU of modern vehicles controls a series of actuators on an internal combustion engine to ensure the optimum running. It does this by reading values from a multitude of sensors within the engine bay, interpreting the data using multidimensional performance maps (Look-up tables), and adjusting the engine actuators accordingly.

That has to be a gimmick, there's no way anything that plugs into the OBD port can modify engine signals, the only way to change tuning is to flash a new program to the ECU.
The best tuning options known here for our trucks is Hp Tuners and OV Tune.