When Allison says its a performance upgrade on the PU side and that is not allowed, I questioned itJust_a_fan wrote: ↑29 Jun 2021, 15:05The ERS is not covered by the ban on upgrades. So if they can improve the way it does its thing then that is perfectly legal.Dee wrote: ↑29 Jun 2021, 14:46Derating is a performance issue. https://www.motorsport.com/f1/news/merc ... l/5941677/
"Team boss Toto Wolff reckoned that Mercedes was losing out to Honda in terms of its derating – which is when the engine boost that comes from its energy recovery systems runs out at the end of straights.
Speaking about where Mercedes was losing time to Red Bull, Wolff said: “I think we're losing on the high speed [corners]. We can clearly see there's a deficit.
“We're losing a little bit on the engine side in terms of derate. We are not yet in a happy place with our energy recovery, but it's not one thing we point to where we can say this is the big gap.”
Solving this issue increases performance.. thus a performance update
Mercedes have not gone from having no derating issues in Bahrain to having them and then solving them which would be a reliability update
Derating also occurs if the system isn't happy about something e.g. temperature. So solving that issue would be a reliability fix and, again, legal.
If ERS upgrade is allowed, then that's that. We shall see how much performance that brings Mercedes