Haha, my message looks out of place with the thread merge. Good luck with your car, maybe post s vid when it's broken in. :)

How can I disable NATS if I cant connect with the OBD port?

You can tap into CAN a lot of places but you may have to splice some wires. If you are using the same BCM and ECM, NATS shouldn't be the problem. My money is on the wiring/connectors. YMMV

Does the ecu need a ground wire directly off of it or is it ran into the fuse box?

Comes out fuse box and goes to neg battery.

Was going to see how it was going. I agree with SouthArk.

Does anybody have a schematic of the ECU power? I seen it was grounded properly under the carpeting. I looked at all my fuses and none are blown.

I checked the IPDM box, the main fuse box by the that and the fuse box under the steering wheel.

However, I never did find an "ecu" or "ecm" fuse.

Does anyone know where this is located?

Or if they call it by a different name?

The FSM has wiring diagrams, pinouts, physical locations, and more.

Whats the word? Got it running boss!

MAN I WISH!! I have checked every fuse, found the grounds and power and have researched pages and pages of the FSM. I have a buddy who is a Honda tech that is coming over on Saturday to take a look. If that all fails then its off to Nissan dealer. Who can then make sure my key fob is programmed to the ecu still. If that fails my next step is a new ECU.

This is killing me....

If you have some spare time before your buddy gets there, I'd unplug all the connectors on the ECM and BCM, check the pins for damage, and plug back in. You may have trapped some dirt on a pin or bent one.

Edit: If that doesn't work, I'd next do the same with the key/immobilizer circuit.

You have been very patient. I think I would have lost my mind. My car is a daily driver, I always plan these projects for the weekend so my wife can got to work on Monday. When something goes wrong it suck. Thats when we feel like the image below.

Truly wish you luck!

Hahaha!!...I showed guys at work this.

Finally!!! It was the connector from the engine bay by the firewall under the boot. I didn't even know they split there. It wasn't snapped together all the way. Car started up perfectly. First time ive driven it in 7 months. Built motor. Ready for some serious boost soon!