I have a 2006 Nissan Skyline 250GT with a VQ25 (DD) motor. This car was purchased from Japan. It's giving p1130 and 1110 codes. The problem that I''m having is that I can''t locate the Swirl control valve Solenoid valve and VTC solenoid on my car. I viewed a diagram for the 2006 Infiniti G35 and G25 where these parts are easily located but they are not in the same location on my car. Are parts for my car internal? If not where are they located. Could help me locate these parts on my car and a diagram will also be helpful. Thanks.

The problem you are running into is that it looks like Nissan transitioned motors on you at some point. The Infiniti VQ25 is a HR motor, not a DD. That's why you are not finding the parts in the same location.