So, I have had a few Audi Cars. I just purchased a used 2016 Audi A5 with the 220hp motor. This will my my daily driver. So, I don't have to spend hours researching, what is the best way to increase HP on the cheap. Figure I have like 1k. I also want to replace the grill. Any help is appreciated.

Tune it. Easy bump in HP that will make a big difference in the way the car feels.

Recommendations for tune? I am in Calif, and we only have 91 octane.

APR stage 1 upgrade, increases HP 50+ and Torque 70+ (from their website goapr.com)

APR Thank you researching now. Noticed tonight this car does not have a dipstick, just a plug. Can I buy a dip stick? I would like to check oil levels.

you can check the oil through the MMI. I think your owner's manual can walk you through it. I did buy a dipstick for my Q5 but don't recall the vendor.