DITTO!!!!!!!
Its a Gemmic....From what I see it is just another device. That changes input sensor parameters. The ECU will relearn around this. Or eventualy set off the cel, as a sensor input out of range.
Plus looking at some of his other items, e-supercharger..LOL, etc. I see about four items that have been tested by profesionals as useless.
I would stay away from this company. The only way to retune an EFI/ecu controled motor. Is as Todd said, XCAL. The tuning parameters from the xcal are directly loaded into the ROM and RAM memory of the engine computer. By pluging into the obd2 jack.
Plus with the xcal3 you can always go back to stock. Without all the cutting and splicing into the wiring harness.
Keep an eye on swap and sale. Or for another $200 you can get the tunes you want from Torrie. With a lifetime of tuning service.