Quick harness plug ID

This is an S14 Zenki SR20DET engine harness. Need a quick answer, what is the section of harness in #1 for?

Currently searching google with no luck so far, help me out.

Looks to me like the turbo, ac, O2 sensor, and power steering wires. But I could be wrong.

Thanks.

Figured it out… Ignitor chip, MAF, boost solenoid, wastegate solenoid, A/C and power steering.