Zero to Hero. Bargain basement Champ Rockshox Yari gets the Fox 38 Bath treatment
I used this damper
https://amzn.to/48YzXAY
Performance is better, but not much better with the stock air spring. Upgrading the air spring the damper did really come to life
Tools you need to tune suspension here
Digital shock pump https://ebay.us/kUhN4d
Dgital measuring tool https://ebay.us/uieWBV
Pick set https://ebay.us/jKZfeW