I just re-read your posts, have you ever swapped out the IPDM?

Have you ever checked it for water/moisture damage?

 

No I haven’t swapped the ipdm, doesn’t appear to be moisture just some cobwebs. But I haven’t done a proper check on the relays or where they plug in to make sure I’m getting the proper amount of power or resistance.

Would the engine harness being from a 350z play into role? There’s 2 extra connectors that I haven’t seen on any g35 that come down onto the cabin with the engine harness.

 

Replaced the engine harness with matching one from 07 g35, car starts no but won’t idle. Is there anyway to check timing without taking whole cover off? & might be my map of maf sensor. Gonna erase all codes and try again, and see what codes pop up.