Rb25Det Neo Cold Start Knock. Piston Slap?

[NeoMaggots]

Bah @ Guilt -Toy You cursed me with that second post

[NeoMaggots]

Okay here goes so I pulled the motor, Rebuilt the entire thing. every i dotted and t crossed. crank collar you name it. finished reassembly and started it up all was fine, noticed my AAC valve or w/e is not letting me get a high cold idle. And also noticed It still does that knock when its cold. Any ideas? I also cant seem to figure out why when I start it idles so low when cold. The aac valve opens and closes when I put power and ground to it. im guessing its not stuffed?

[GTSBoy]

The Neo AAC has two paths in it. One is warmed by coolant and so closes up as the car warms up. This is the cold start idle increase. The other path is the ECU controlled AAC.