Thanks for the info ,but i already find out the solution to that problem..So i have a EURO model evo 8 and the apexi is for the evo 7 there is two things that needs to be done before it works probelly.One is the 8 and 22 pin change and the other is that you will need to add the vacuum sensor that is not on the 260, but is expected by the ecu.
There is available remote mount unit which simplifies fitment and requires a simple ground and 5v signal live from the throttle sensor and a signal wire running through to the ecu. This needs to be run to pin 73 at the ecu.
Then you will need to check for earth at the cam and crank sensor and the air flow meter and make good the one that is missing in the engine bay. Usualy one or the other not both, but check both. As yours starts and runs to 2000rpm, I would suggest it is the AFM that isn't earthed (air temp is in that unit).