i got some EJ20G 4 plug ECU diagrams and they are a bit diff then the H harness.
I am a little familiar(sp?) with the G harness, and the H is a bit diff. instead of having all of the engine controls go in one part of the harness like the G, the H splits of and 1/2 the harness goes from ECU to engine and the other 1/2 of the engine plugs run thrue the interior harness before it goes to the engine
. i can make it work, i just need to know what wires im plicing and what not. its not hard to figure it out, its just hard to figure it out if you dont know what wires your looking at.