it s directly the ECM (engine Ecu), it is inside the plastics in front of the passenger seat

Page literally mentions the ECU and you didn't bother to look at that?
This does not bode well for someone boosting their car.

were can I get this adapter??
 

how can I get this adapter to tap my CPC input on my BRZ???

Yes, I was looking. It didn't help that there is a very large wire loom hiding it. I had to really get in there and dig to find it. I was hoping someone would be nice enough to give a little insight as to where it is and the best way to tap into the CPC input.

https://photos.app.goo.gl/kBdSADYWJsBpjkKy5

Okay, I've got the Delicious Tuning OFT Flex Fuel Kit installed and connected to the CPC input on the ECU. I've checked and double checked that it's the right lead in the block and that there is continuity from the D-Box CPC lead through the ECU block connector.

I'm getting the P0037 CEL, I'm guessing it's from the fact that the O2 sensor is disconnected to power the Dbox. It looks as through people are keeping the O2 sensor connected and simply tapping the O2 sensor for the power.

Is that the solution to the P0037 CEL??

https://servimg.com/view/19658073/92

Need to disable that CEL in the tune.

so, OFT needs to send me a different Tune that disables the CEL. Cool.