I’ve been a good C racer for a couple of years, but have improved to the point where in some shorter (15-20 mile) races I’ve been able to compete in the B cat. However, this now means I CAN’T enter any longer races as for anything over 20-30 minutes I just can’t keep an average over 3.2 wkg, and if I enter as a C cat I get UPG on ZwiftPower.
what’s your weight?
About 75kg most of the time.
Zwift Power (ZP) uses 95% of you your peak 20 performance during a race to determine your Cat. now that you are one level up you will have to start at the bottom and work your way up.
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That’s what I was afraid of, but fair enough!
Nothing to be afraid of, Next year you race as an A cat. 
ZP use your best 90 days, so if you do the longer races and you do indeed perform worse you will be moved down to C. but lets hope you don’t move down and improve your finishing positions in B.
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Could be worse; you could be like me.
Got upgraded to B, changed from a Vortex to a Neo 2 and BOOM! Right back down into C. 
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Yes, I have heard stories that the direct drive trainers like the Neo and Kickr are a more realistic performance indicator which affects your times. I believe the wheel-on trainers are a little flattering, but not nearly as much as the completely dumb trainers that have been Zwift-ified.
When i switched to Bs, it took me 2 months to get used to it.
Keep pushing! Ride on!
The good news is there’s plenty of us at the same level so you still get a good race - it’s just for 50th spot in B rather than placing in C. You do certainly improve doing it though.
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Yeah. I just got upgraded to B; so I expect a few weeks of bringing up the rear, then being unceremoniously dumped back into C.
Yep same here, entered a cat c race…been upg, can’t keep up with cat b, go straight out the back on start gate! Why does it not automatically upgrade you! it Used to do. All that effort wasted no position, not been on Zwift for a while thought i would enter cat c, tbh they were quite quick.
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Oh what! No way…I think I was on zwift power guestimate… maxing out at 400watts! I was getting uncatagrized I was using cadence and speed sensor… because my wahoo was knackard…on a bkool now. I have lost fitness, due to been I’ll. My ftp his 200watts weight 75kg height 6ft 1.
Another question, when a event starts I have to pedal like hell with 40secs to go, the speed goes up very slow resulting in me going out the back! Why? Iam on a bkool pro FEC enabled.
That’s how it works.
Acceleration from zero is slow in Zwift. So, as you’ve seen, everyone winds up to high power just before the start so that they shoot off like a rocket.
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Yes I’ve tryed this…dont work for me! Still very slow at start. I was thinking delay in internet connection, dont wana be pushing 300watts and having heart attack a mile down road.lol.
@paul_canham - I have a Bkool pro 2 as well- exactly the same issue. It doesn’t matter what what’s I am pushing or for how long before kick off I still don’t have a chance.
BKools are rubbish, you are 2 grades less than what you think you are;
I started with a Bkool pro2, i use a kickr now. good luck impressing your family.
Iam not impressing no one…its a tool when the weathers crap, I’ve had and gone threw 4 wahoo kickers all
Knackered up with in 6 months! There not worth £1013 bundle…chain alignment was poor, and the units all developed faults, went noisy! tbh the power data was good…you still have to spin up like mad on line.i got given a bkool pro 2 got it fec enabled by bkool over the internet via remote pc. Not buying any more expensive trainers.