Not my own setup, it's my roommate's setup, but It's what I use to wash my car.
Car is self PPF'd.
All steps are done with a 1800psi pressure washer
1. Koch Chemie active foam (HEAVILY diluted) as pre-wash foam gun with softened water (car + wheels)
2. Full Rinse off with softened water
3. Meguiar's Gold Class (mild dilution) with a cap of ONR as main Foam wash foam gun with softened water (car + wheels)
3a. Microfiber Sponge to agitate foam on body (no pressure applied, just gentle once over)
3b. Separate Sponge to wash wheels if i feel like it or if it's extra grimed up, otherwise I don't even touch
4. Full Rinse off with DI water
5. Dry with 70/30 twisted loop giant towel on body
car washed usually every 2 weeks, 3 weeks max.