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I think you'd be safe to follow the standard Fox DPS guide: https://www.ridefox.com/dl/bike/my22/605-00-250-FLOAT-DPS-Tuning-Guide-white-revB.pdf
350psi for EVOL shocks
chiroshi
@hippy
It doesn't mention max pressure or guidlines. Got my digital shock pump. How much more air can I add to this shock before it explodes?
https://www.mtbr.com/threads/super-high-pressure-in-2020-scott-spark-rc.1123333/
https://www.ridefox.com/fox17/help.php?m=bike&id=1157
https://www.youtube.com/watch?v=7y1xoUtb63g
I'm about 80 kg and hover around 230 psi at 25% sag. To set your sag, put the dropper down if you have one, sit on the bike with your feet on the ground without bouncing on it, then raise your feet, carefully put them on the ground again, and gently stand without bouncing the bike. Then measure the distance between the sag ring and the wiper's outer edge. Keep filling it until you measure around 11mm from the wiper edge to the sag ring. This will be ~25% sag for that shock. It's a good starting point.
At 90 kg, I wouldn't be surprised if you end up at around 250 psi, give or take. But make sure to fill the shock with 50 psi at a time and cycle the shock by sitting on it about 10 times before adding more air. This is so that both chambers equalize. When you're done with your sag, then you need to set your rebound, which is a totally different process