The main site is not updated with the info yet, but maybe soon.
Jan 13: DC Rainmaker Analyzer
Not sure if I want any firmware updates now 
Is that the new firmware?
No, this is firmware 4.1.1 from december 21th.
So whatâs your secret then 
A bunch load of factory spindowns maybe
I made some more test this morning and it really seems like this is the issue.
Basically if you spindown your Kickr at the beginning of the workout (after warm letâs say). It will hold its calibration until you coast or backpedal (usually 2-4 sec is enough). Then it will throw off the calibration is seems and you basically have to re-do a spindown.
Perhaps someone else in this thread can see to see if you get to the same observation.
If thatâs really what it is, itâs a MAJOR flaw and we should have the option to turn off the auto-calibration.
I tested this a while ago and I got the same drift regardless of whether or not I did any spindowns or coasts during the workout.
I get the same gradual drift even if I keep pedaling throughout.
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I think Im gonna use Powermatch with my Favero and not worry about what the heck my Kickr is doing anymore lol. It is too unreliable.
Im struggling a bit to understand you. By spindown, do you mean factory spindown or just auto calibration when coasting?
By spindown I mean a âtrueâ spindown within TR DEVICES section (or wahoo app).
Ok.
There isnt a âspindownâ button in Wahoo app is it? (Before now of course with the new 4.1.2 firmware)
I did some testing with spindown using TR-devices earlier, couldnt seem to get any consistent results:
No exactly the button wasnât there before 4.1.2
All of these is very strangeâŚ
The new fw hasnât made any difference to my drift.
I did the donner TR workout that has 3x 12min threshold efforts and on the first interval my kickr was -0.5% the second -1.5% and the third -2.5%.
I then switched and did a zwift ride (the kickr will have had a chance to auto calibrate) and the difference was -3% over 15 mins.
I cant 100% guarantee that it isnât my pedals drifting but I will say that my L/R balance was constant throughout so if my pedals are off then it is both of them by the same amount.
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Similiar experience. has also not addressed the resistance mode ERG issue some of us have been experiencing in ANT connection
Judging by how quickly this firmware got released after the previous one Iâd guess itâs a either a really simple mod - like adding the ability to do a manual spindown - or fixing a bug they noticed was introduced in the December update.
Same here with âStability Improvementsâ. Ride yesterday started with Kickr reading 3-4% higher than Assioma pedals (first 20 of 120 mins), and ended with them in sync (0.1%) in the last 20 mins.
New firmware/app/etc. and consistent outcome today. ~10 watts low for first 30 mins and then rather than drift up it seemed to almost âsnapâ to within a watt or two at an interval change ~30mins in and then drift a watt or two higher over rest of ride. All in all this is pretty close and acceptable for long rides (slightly easier warm up) but not great for short (<60 min) interval rides.
No impact from a bathroom break (coasting) at ~2:30:00 in.
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Itâs frustrating because the main reason I upgraded to the kickr was because I didnât want to wait 15min for it to warm up - but now I seem to have to wait 40mins instead 
I think the kickr reading 4% lower is reasonable given drive train losses - its the drift in the delta that is the issue for me.
I know Iâve got the (very good) option of using power match but I spent ÂŁ1000 on something and I want it to be right and I love a good experiment 
This got me thinking though⌠trainerroad will have a vast amount of data from people using a kickr v5 and using powermatch. They would be able to spot if this drift is widespread among kickr users and perhaps feed the data back to Wahoo if it is?
Whoâs button do I pess? @IvyAudrain maybe? 