• Warning!!

    Riding a tuned or deristricted EMTB is not a trivial offence and can have serious legal consequences. Also, many manufacturers can detect the use of a tuning device or deristricting method and may decline a repair under warranty if it was modified from the intended original specification. Deristricting EMTB's can also add increased loads for motors and batteries. Riding above the local law limit may reclassify the bike as a low-powered bike, requiring insurance, registration and a number plate.

    Be aware of your local country laws. Many laws prohibit use of modified EMTB's. It is your responsibility to check local laws. Ignoring it, has potential implications to trail access, and risk of prosecution in the event of an accident.

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    We advise members great caution. EMTB Forums accepts no liability for any content or advice given here. 

Derestricting bosch smart system

Yes, I plan to do the US update and reduce the rear wheel size by half. I should mention that my bike is an electric mountain bike. So, to be able to reach 45-50 km/h, I'll have to install a larger chainring.

Yes, with wheel size halving, you can trigger an error in extreme cases like that you described, but it wont stop the support, only trigger a crank RPM limit, and after 1,5hour riding like that it will clear byitself, or you can delete it with a diagnostic. It still have all of the power, but only at lower cadence.

I can do the usa software and wheel size halving.
 
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Bike speed rs (real speed) works great.
Plug and Play
No it doesn't. It will throw errors with Gen 5 rim magnet eventually and get you stuck in the middle of nowhere or slow you down in fast moving traffic (ask me how I know).

It will throw 504 and 503 errors.

Just get the firmware mod and forget about errors - also its a complete rip-off for the price compared to 75 euros for a firmware mod.
 
I just did the firmware mod changed to the 32 km i didn’t want to take the chance of getting these errors by getting a volspeed or do the wheel half thing. 32 feels so much better kinda like thats how the bike should be. With the 25 km a little hill and you feel the dragness, been riding my same 8km route now to work with the usa firmware and the difference is significant.
 
Done mine with Mr. Rudie.

Ebike CX4 Smartsystem

7 ☆ service
7☆ person
(btw 7 out of 5! [Edit: Like in 7 star hotel]).
Just recommended to a couple of friends, and now, I'm recommending him here.

Just go to FB and you can get in touch with him.

With all the scamers and scams that we ear everyday, it is fresh air to get to know someone trully GURU and Nice Person!

BTW: My bike appears on Flowapp (not a Cube or other brand) everything is working, and yes, I went for the 64km/h!

Having a final drive of 34t x 11t (from original 36t x 10t)... max speed at 110/115rpm, is not more than 45/46 km/h.
I won't be pedaling that fast, since I like (and trained over the years) to pedal between 80/85 rpm, and at that cadence, I'll be going at 32/34km/h!

Finally I have my ebike has I wanted!!!
And all this because of Rudie!

Cruise on the road around 30km/h, burst, or when we need those bursts to go over steep incline, overjumping, what ever, motor keeps assisting, without the dead anchor syndrome!
And yes, I now use more ECO/Tour than before.
Max. RPM I can make is a bit over 150RPM, so at that cadence, and my final drive, I can reach the 64km/h. At least for a few seconds, and in flat terrain!

Really happy!
Finally my ebike, is as it should be from factory!
And for all of those non-sayers and law obey caracter, YES, my bike normally uses PRIVATE land.

PS: Battery consumption will be higher, if you maintain high speed and don't push those pedals!
Just for reference, my "normal" ride, has an average of 170/180Wh, with 220/230Wh on boring, flat, road terrain --> ± 35km/h
[EDIT: Previously those 220/230wh leg power would make 25km/h and some moments at 27...28..
29... remeber I'm talking Average Power. So when motor assisted stopped, my leg power would be higher than 220/230Wh. Meaning: I'll continue to do exercise, because I normally I use ECO or TOUR on the road, but with the flash, it will reach +30ish km/h as if I would on a normal bike).

PS2- bike & rider is insured, even before the flash! When you ride something (normal/ebike/skates/scooter/mopped), insurance is essencial to cover any misinfortune that you may onflict on others or damage property/goods.
 
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Hi does anyone have any info regarding derestricting the new bosch smart sytem 2022?
Best regards
I realise this is an old question but for what it's worth I've recently fitted the Volspeed Bosch Smart System V2 Tuning kit on my 2022 Cube reaction hybrid pro 750wh.
The only set back that I've had is my Speedo doesn't go over 14/15mph which I knew would happen as I was informed beforehand it would read incorrectly.
My only issue is am I supposed to change the wheel circumference or leave it has it is?
 
I realise this is an old question but for what it's worth I've recently fitted the Volspeed Bosch Smart System V2 Tuning kit on my 2022 Cube reaction hybrid pro 750wh.
The only set back that I've had is my Speedo doesn't go over 14/15mph which I knew would happen as I was informed beforehand it would read incorrectly.
My only issue is am I supposed to change the wheel circumference or leave it has it is?
The tuning box, manipulate signal, to fool the ebike system.
It communicates a lower speed to the ebike controller, permiting assistance over the 25km/h speed limit.
 
Currently, all "tuning modules" for Bosch Smart engines are pointless. Not only are they expensive, but they are also generally unreliable – sooner or later, the Bosch system detects the module and reports an error.

Why are these modules pointless? Because for a few dozen euros (currently €35 – competition does its job, which is a very reasonable price for the service), you can upload software that increases the maximum speed limit from 25 to 32 km/h. In addition, the maximum assistance speed is fully configurable in the Bosch Flow app. You can set the legal limit of 25 km/h on-road and use the increased maximum speed in off-road mode. Simply move the speed limit slider in the Flow app.

For those who need a theoretical lack of limit, simply combine the US limit (32 km/h) with a reduction by half (or less, but half will give a simple estimate of the current speed) of the possible wheel circumference setting. Why theoretical? Because reaching 64 km/h is only possible for road/gravel bikes with the right gear ratio. In addition, maintaining a speed of >50 km/h requires a lot of power, and although the motor can provide 0.6 - 0.75 kW of power, it can only do so for a relatively short time. Even on a motor with a 25 km/h limit, this can be felt on long, steep climbs. Motors designed for bicycles with a speed limit of 45 km/h have a slightly different design than motors with a lower speed limit. Therefore, the CX motor cannot simply be reprogrammed to a 45 km/h model. Can the CX handle a constant speed of 45 km/h? Perhaps. Does it make sense to increase the limit to 64 km/h? For some, yes, if the 25/32 km/h limit is too low for them. The fact is, they should switch from a bicycle to a moped (even an electric one) if they want to travel at such speeds on public roads. Alternatively, they could switch to approved bicycles with a 45 km/h limit (registration, insurance, etc.). That's the law.

Leaving aside the debate about maximum speeds, hardware limiters do nothing more than programmatically set the limit to 32 km/h and reduce the wheel circumference. What's more, they do it worse, because they are much more prone to error. And they cost a lot. Much more than the software speed adjustment service. This makes software speed increase using BDT3 unrivalled. At least until Bosch introduces regional restrictions, i.e. removes the possibility of reprogramming in areas where 25 km/h applies (e.g. EU/UK) to the limit applicable in the USA, for example. This means that a service technician from the EU will not be authorised to activate the 32 km/h limit. This is easy to implement. Similarly, it is possible to block a wheel circumference that is too small. However, for now, there are no such restrictions, hence the possibility of reprogramming the maximum speed limits of Bosch motors to speeds higher than those permitted in a given area. Is this legal? No. Just like "tuning modules", but people will use it anyway. In the case of software, it is even easier to set a legal assistance speed range of up to 25 km/h than with some modules. In addition, the installation of modules can be problematic, especially with magnets on the wheel rim.

Hence the conclusion that tuning modules are currently pointless. After reprogramming, the only noticeable changes are: a message about the need to be careful and switching to off mode (probably required by law in the US). Can anyone find fault with this? In the case of standard factory bikes, it is highly unlikely. Especially if there is a 25 km/h speed limit on public roads. Of course, if the limit is removed (the so-called 64 km/h), such a bicycle travelling on a public road can quickly be classified as not complying with legal standards, with all the consequences that entails, such as driving a vehicle without a licence (no type approval), no driving licence, no insurance... Personally, I would not take the risk. Riding off public roads does not, of course, have these restrictions, but even here it is worth exercising restraint, if only for your own safety...
 
Currently, all "tuning modules" for Bosch Smart engines are pointless. Not only are they expensive, but they are also generally unreliable – sooner or later, the Bosch system detects the module and reports an error.

Why are these modules pointless? Because for a few dozen euros (currently €35 – competition does its job, which is a very reasonable price for the service), you can upload software that increases the maximum speed limit from 25 to 32 km/h. In addition, the maximum assistance speed is fully configurable in the Bosch Flow app. You can set the legal limit of 25 km/h on-road and use the increased maximum speed in off-road mode. Simply move the speed limit slider in the Flow app.

For those who need a theoretical lack of limit, simply combine the US limit (32 km/h) with a reduction by half (or less, but half will give a simple estimate of the current speed) of the possible wheel circumference setting. Why theoretical? Because reaching 64 km/h is only possible for road/gravel bikes with the right gear ratio. In addition, maintaining a speed of >50 km/h requires a lot of power, and although the motor can provide 0.6 - 0.75 kW of power, it can only do so for a relatively short time. Even on a motor with a 25 km/h limit, this can be felt on long, steep climbs. Motors designed for bicycles with a speed limit of 45 km/h have a slightly different design than motors with a lower speed limit. Therefore, the CX motor cannot simply be reprogrammed to a 45 km/h model. Can the CX handle a constant speed of 45 km/h? Perhaps. Does it make sense to increase the limit to 64 km/h? For some, yes, if the 25/32 km/h limit is too low for them. The fact is, they should switch from a bicycle to a moped (even an electric one) if they want to travel at such speeds on public roads. Alternatively, they could switch to approved bicycles with a 45 km/h limit (registration, insurance, etc.). That's the law.

Leaving aside the debate about maximum speeds, hardware limiters do nothing more than programmatically set the limit to 32 km/h and reduce the wheel circumference. What's more, they do it worse, because they are much more prone to error. And they cost a lot. Much more than the software speed adjustment service. This makes software speed increase using BDT3 unrivalled. At least until Bosch introduces regional restrictions, i.e. removes the possibility of reprogramming in areas where 25 km/h applies (e.g. EU/UK) to the limit applicable in the USA, for example. This means that a service technician from the EU will not be authorised to activate the 32 km/h limit. This is easy to implement. Similarly, it is possible to block a wheel circumference that is too small. However, for now, there are no such restrictions, hence the possibility of reprogramming the maximum speed limits of Bosch motors to speeds higher than those permitted in a given area. Is this legal? No. Just like "tuning modules", but people will use it anyway. In the case of software, it is even easier to set a legal assistance speed range of up to 25 km/h than with some modules. In addition, the installation of modules can be problematic, especially with magnets on the wheel rim.

Hence the conclusion that tuning modules are currently pointless. After reprogramming, the only noticeable changes are: a message about the need to be careful and switching to off mode (probably required by law in the US). Can anyone find fault with this? In the case of standard factory bikes, it is highly unlikely. Especially if there is a 25 km/h speed limit on public roads. Of course, if the limit is removed (the so-called 64 km/h), such a bicycle travelling on a public road can quickly be classified as not complying with legal standards, with all the consequences that entails, such as driving a vehicle without a licence (no type approval), no driving licence, no insurance... Personally, I would not take the risk. Riding off public roads does not, of course, have these restrictions, but even here it is worth exercising restraint, if only for your own safety...
€35?
 
Obecnie wszelkie „moduły tuningowe” dla silników Bosch Smart są bezcelowe. Są nie tylko drogie, ale i generalnie zawodne – prędzej czy później system Bosch wykryje moduł i zgłosi błąd.

Dlaczego te moduły są bez sensu? Bo za kilkadziesiąt euro (obecnie 35 euro – konkurencja robi swoje, co jest bardzo rozsądną ceną za usługę) można wgrać oprogramowanie, które zwiększa maksymalną prędkość z 25 do 32 km/h. Dodatkowo, maksymalna prędkość wspomagania jest w pełni konfigurowalna w aplikacji Bosch Flow. Można ustawić dopuszczalną prędkość 25 km/h na drodze i korzystać z podwyższonej prędkości maksymalnej w trybie off-road. Wystarczy przesunąć suwak ograniczenia prędkości w aplikacji Flow.

Dla tych, którzy potrzebują teoretycznego braku limitu, wystarczy połączyć limit amerykański (32 km/h) z obniżeniem o połowę (lub mniej, ale połowa da proste oszacowanie aktualnej prędkości) możliwego ustawienia obwodu koła. Dlaczego teoretycznie? Ponieważ osiągnięcie 64 km/h jest możliwe tylko dla rowerów szosowych/gravelowych z odpowiednim przełożeniem. Ponadto utrzymanie prędkości >50 km/h wymaga dużej mocy i chociaż silnik może dostarczyć 0,6–0,75 kW mocy, może to robić tylko przez stosunkowo krótki czas. Nawet w przypadku silnika z limitem 25 km/h można to odczuć na długich, stromych podjazdach. Silniki zaprojektowane do rowerów z limitem prędkości 45 km/h mają nieco inną konstrukcję niż silniki z niższym limitem prędkości. Dlatego silnika CX nie można po prostu przeprogramować na model 45 km/h. Czy CX poradzi sobie ze stałą prędkością 45 km/h? Być może. Czy ma sens zwiększenie limitu do 64 km/h? Dla niektórych tak, jeśli limit 25/32 km/h jest dla nich zbyt niski. Prawda jest taka, że powinni przesiąść się z roweru na motorower (nawet elektryczny), jeśli chcą jeździć z taką prędkością po drogach publicznych. Alternatywnie mogliby przesiąść się na homologowane rowery z limitem 45 km/h (rejestracja, ubezpieczenie itp.). Takie jest prawo.

Pomijając dyskusję o prędkościach maksymalnych, ograniczniki sprzętowe nie robią nic więcej poza programowym ustawieniem limitu na 32 km/h i zmniejszeniem obwodu koła. Co więcej, robią to gorzej, ponieważ są znacznie bardziej podatne na błędy. I kosztują dużo. Znacznie więcej niż programowa usługa regulacji prędkości. To sprawia, że programowe zwiększenie prędkości za pomocą BDT3 jest bezkonkurencyjne. Przynajmniej do czasu, aż Bosch wprowadzi ograniczenia regionalne, tj. usunie możliwość przeprogramowania w obszarach, gdzie obowiązuje 25 km/h (np. UE/Wielka Brytania), na limit obowiązujący na przykład w USA. Oznacza to, że serwisant z UE nie będzie upoważniony do aktywacji limitu 32 km/h. Jest to łatwe do wdrożenia. Podobnie, możliwe jest zablokowanie zbyt małego obwodu koła. Jednak na razie nie ma takich ograniczeń, stąd możliwość przeprogramowania limitów prędkości maksymalnej silników Bosch na prędkości wyższe niż dozwolone na danym obszarze. Czy jest to legalne? Nie. Podobnie jak „moduły tuningowe”, ale ludzie i tak będą z tego korzystać. W przypadku oprogramowania, ustawienie zakresu prędkości pomocy prawnej do 25 km/h jest jeszcze łatwiejsze niż w przypadku niektórych modułów. Ponadto montaż modułów może być problematyczny, zwłaszcza w przypadku magnesów na feldze.

Stąd wniosek, że moduły tuningowe są obecnie bezcelowe. Po przeprogramowaniu jedyne zauważalne zmiany to: komunikat o konieczności zachowania ostrożności i przełączenie w tryb off (prawdopodobnie wymagane przez prawo w USA). Czy ktokolwiek może mieć do tego zastrzeżenia? W przypadku standardowych motocykli fabrycznych jest to wysoce nieprawdopodobne. Zwłaszcza jeśli na drogach publicznych obowiązuje ograniczenie prędkości do 25 km/h. Oczywiście, jeśli ograniczenie zostanie zniesione (tzw. 64 km/h), taki rower poruszający się po drodze publicznej może szybko zostać uznany za niezgodny z przepisami, ze wszystkimi tego konsekwencjami, takimi jak jazda bez prawa jazdy (bez homologacji), bez prawa jazdy, bez ubezpieczenia… Osobiście nie podejmowałbym takiego ryzyka. Jazda poza drogami publicznymi oczywiście nie ma tych ograniczeń, ale nawet tutaj warto zachować umiar, choćby dla własnego bezpieczeństwa…

Mam zainstalowane oprogramowanie układowe w wersji amerykańskiej. Jak mogę znacząco zmienić obwód koła? W aplikacji minimalna wartość to 2169. Nie próbuję nawet zmniejszać jej o połowę, tylko dostosowuję ją na tyle, aby utrzymać prędkość około 35 km/h. Teraz, gdy pokazuje 32 km/h, jest to w rzeczywistości bliżej 30 km/h, a potem wspomaganie znacznie spada.
 
Mam zainstalowane oprogramowanie układowe w wersji amerykańskiej. Jak mogę znacząco zmienić obwód koła? W aplikacji minimalna wartość to 2169. Nie próbuję nawet zmniejszać jej o połowę, tylko dostosowuję ją na tyle, aby utrzymać prędkość około 35 km/h. Teraz, gdy pokazuje 32 km/h, jest to w rzeczywistości bliżej 30 km/h, a potem wspomaganie znacznie spada.
You can do nothing about that.
 
Yes, although I think they already cost around €50. But it’s still a good deal when you consider the price-to-functionality ratio.

Mam zainstalowane oprogramowanie układowe w wersji amerykańskiej. Jak mogę znacząco zmienić obwód koła? W aplikacji minimalna wartość to 2169. Nie próbuję nawet zmniejszać jej o połowę, tylko dostosowuję ją na tyle, aby utrzymać prędkość około 35 km/h. Teraz, gdy pokazuje 32 km/h, jest to w rzeczywistości bliżej 30 km/h, a potem wspomaganie znacznie spada.

Only with the same software that was updated to the US version. You need to set the wheel circumference to half the current tire circumference. Unfortunately, this will result in the displayed speed (and distance) being halved. Actually, if you’re halving the wheel circumference, switching to the US software doesn’t make much sense. Halving the value in the EU version will allow for assistance up to 2x25 km/h = 50 km/h. The only catch is that the displayed speed will be half as much.

In the EU software, power assistance cuts off very close to 25 km/h, if not immediately after exceeding 25 km/h. In the US software, it provides assistance up to 30 km/h; after that, there’s a noticeable drop in assistance, and above 31 km/h, the assistance is practically negligible. I was also surprised by such a difference. For me, the minimum wheel circumference is 2130 mm; the actual (27.5") is about 2160 mm, so there’s not much I can do to try to shift the power cut-off speed higher.

However, for me, 30 km/h of assistance off-road is enough. I don’t need an electric motorcycle and riding with active assistance up to the 32 km/h limit (less in practice) has a fairly significant impact on energy consumption — for me it's an extra 2–3 Wh/km. I have the assistance levels set fairly low and rely more on my own legs (mainly off-road riding with only a small amount of uphill riding — about 1 km per 100 km). The range drops by about 35 km from roughly 130 km on a 750 Wh battery (the average over 5,000 km is about 5.7 Wh/km). This is of course acceptable; it would be worse if someone wanted to ride at the highest assistance levels. I didn’t run any energy consumption tests at maximum assist; as I mentioned, I like to keep my legs working. In theory, moving the speed limit slider from 32 km/h to 25 km/h doesn’t increase the range by much (and vice versa), but in practice, the difference is noticeable.
 
Hello,
I try to understand and find information of the us software update.
How it works, what is needed, …
Thanks
Belgium gen4 owner
 
Hello,
I try to understand and find information of the us software update.
How it works, what is needed, …
Thanks
Belgium gen4 owner
It’s quite simple. The service technician connects your controller (e.g., LED Remote, etc.) via a USB-C cable to a PC (Windows) running the Bosch DiagnosticTool 3 service software. This can be done on-site—in which case the technician performs the task on their own computer—or remotely—in which case you must connect the appropriate USB-C data cable (it must support full data transmission, not just power) to connect to the Bosch controller, and on the other end, the appropriate USB plug (usually USB-A) to connect to your Windows computer (minimum Windows 10 or 11). Remotely, the technician must install USB virtual port software on your computer to authorize their permissions (they connect their dongle to the remote computer) and Bosch DiagnosticTool 3. Next, they verify their permissions to change parameters on the computer connected to the Bosch controller, select the appropriate bike (the one the user owns, e.g., Cube and model) and the correct motor. Then they select the location, and this is where the location is changed from EU to US/CA. Additionally, they can change the wheel circumference—if someone wants to increase the speed limit for the assist. The configuration is then sent to the controller and... that’s it.

If there have been no changes to the current assist modes, they will be set to a speed limit of 32 km/h. If any changes have been made—such as reducing or increasing the assist level—the speed will remain at the previous level (25 km/h), but you can, of course, change it to any value up to 32 km/h.
However, it is important to note that in regions where the maximum assisted speed is set to 32 km/h, the speed limit works differently than in regions where it is set to 25 km/h (EU). In the EU region, the cutoff for power assistance is very close to the maximum power-assisted speed, e.g., 25 km/h; however, in the US region, full power assistance is available up to approximately 30 km/h, after which it begins to decrease. Once 31 km/h is exceeded, it becomes very weak, and at around 32 km/h, there is practically no power assistance left. It works the same way after manually setting the assist limit, e.g., to 25 km/h—meaning if someone wants to comply with EU regulations and sets the assist level (e.g., for city driving) to 25 km/h, they will have full assist up to about 23 km/h; above 24 km/h, there will be practically almost no assist left. Therefore, to achieve assistance up to 25 km/h, you should set the assistance in the app to 26 km/h or even 27 km/h. In the latter case, the motor will provide assistance up to a speed slightly above 25 km/h—noticeably around 25.5 km/h.
 
“The service technician connects…” That is/was my question , who is willing to do that, how to that (trusted) technician?
 
Id imagine walk assist will turn into run assist with the circumstance change.
They change to config to the USA one so I assume the walk assist will remain unchanged ( I don't believe the Yanks walk any faster than people in the rest of the world, more likely the opposite ;)) i.e. it will stay at a specific speed, it is only the max cycling assist speed that is increased. Of course if you also plan to have the wheel size reduced as well then it will change everything else in proportion.
 
They change to config to the USA one so I assume the walk assist will remain unchanged ( I don't believe the Yanks walk any faster than people in the rest of the world, more likely the opposite ;)) i.e. it will stay at a specific speed, it is only the max cycling assist speed that is increased. Of course if you also plan to have the wheel size reduced as well then it will change everything else in proportion.
I'm talking about the circumference change. If the bike thinks 10km/h is 5 then walk assist is going to be impacted.
 
Id imagine walk assist will turn into run assist with the circumference change.
No. A bit more vigorous, but nothing significant

If you want, you can "pedal through the ground", and be seated. Bike won't stop assistance - can help if you dag a foot on steep technical climb, and just want some help to continue.
 
I saw the option to set walk assist speed in the software used to chnage the wheel circumference, so it should be possible to change it. I didn't think about it at the time, and for me the doubled speed is a bit too fast. But I rarely use walk assist so it doesn't matter that much.
 
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