I did my own test with my Scace and my Silvia, V3 I think. My results were very different from Auber's. I usually hover around 226 on my PID and get perfectly fine shots. I've taken it up to 229 even, no problem. 220 and below sounds way low to me. I can't remember by protocol, but it was certainly wrong. I remember I temped the reservoir at 70F, and toward the end of my test I added ice to the reservoir to see how cooler incoming water would affect the brew temp. My note at the end of the pic is obviously wrong. It was from 70F to 50F with the ice, not the reverse. According to my chart, PID 220 = Brew temp 200. Can't remember how I got myself up to 226, but I'll try to perform a smarter test and follow up. If I get the chance!