@johnfarr has linked to the best explanation for the QESB+ above. If you take time to learn how the trainer software works you will get the most out of it.
It is a fantastic interactive trainer but needs some effort to get it running well. People who have complained above don’t seem to have understood that unlike a lot of smart trainers you can actually get your hands on the power curve mapped inside the trainer! Granted like any other power meter it needs to be calibrated. See if you can borrow a friend’s power meter pedal. Or ride a friend’s calibrated trainer and see what value watts you put out: for the P3, ride at 24mph/40kph on a zero gradient. For the P2, ride 18mph/30kph on a 5% grad. For the P1, 12mph/20kph on 10% grad. You will see where you input the values in the MyETraining software that came with the trainer. @SteveRicketts explains it well further back in this thread…
The factory settings are P1 171, P2 186 and P3 155.
After gradual adjustments to the values from http://athletictechreview.com/2017/01/14/elite-qubo-smart-digital-b-calibration/ I have found that for me, male, 5ft 10in, 160lbs (72.5kg) with fitness level from riding approx 4000 miles with 123,000 ft of climbing (in the real world in the last year) my values are:
I’ve made them stand out because I know a lot of people will want to just scroll down and grab them, being too lazy to do what I did and follow the athletictechriew.com’s advised and start with his figures and then gradually adjust them 30-watts at a time until they start to feel realistic. Then I adjusted in 10-watt increments before switching to 5-watt adjustments, which I was amazed that this too made a noticeable difference. (Sorry I come from a scientific background and can get a bit obsessed!)
I deleted each test ride from Zwift because when I first started with his figures I was flying uphill and banging out some big max power, all of which I’ll never match or beat and so are of no use me in terms of representing my PR’s.
Now when I ride with my road club riders on Zwift, we are quite well matched as we are in the real world, where we fall positionally on a long climb, fast-flat rides or cheeky sprint battles. Well, there is a guy who’s always behind me on the road but who always beats me on Zwift but that’s human nature… ;)
It is mooted above in threads about this trainer overstating the power compared to Zwift and how rubbish that is. As far as I’m concerned it makes for better training and when I race on the road in the spring it is going to pay dividends!
NOTE: The Elite documentation is the worst of any product that I have ever bought. There is no manual, printed or on-line. The software is as attractive as a dos based program from the 90’s! If you want ANY information you have to email them and wait days for a reply. Very poor in this day and age.