Adjusting PAS levels of assist on Engwe EP2-Pro

Hi. I have an Engwe EP2-PRO 250w bike. It is the EU version rather than international. I read online that you can adjust the levels (percentages) of electric motor assist using the display, mine is YL-80C EU version).

 

There are YouTube videos how to do this going into settings of the display, but my display is a different version to those on YT.

 

Rather than the normal 3 'primary 'options(on a YL-80C) and then subsidiary selections, my display offers number 1 - 19 options and nowhere allows what is called (on the Engwe site) 'ASSISTANCE RATIO SETTING OPTION which would allow me to tweak the '%' of motor assist in each gear. (Eg: Level 4 PAS default set to 60% would be better at 80%)

 

I have contacted ENGWE and they said because my bike is NOT the '750w International' bike it is not possible to adjust this (... as fitted with different electronic components??)

 

Any other owners on here with a 250w 'EU' Engwe - have you found the option to change the ASSISTANCE RATIO SETTING?

 

Thanks for your replies.

 

Paul

Hi Paul Welcome, Yeah thats about it im afraid.. your only real option would be to replace the controller and headset/display combo. bikes sold within the eu/uk are limited to comply with the local regs and have closed systems that dont allow mods.

you may find alternative firmware to flash onto your controller but thats a somewhat involved procedure, the endless sphere ev forum may be able to help with that.. https://endless-sphere.com/sphere/ ??

If you look at the display manufacturers manual (Yolin), you'll see that there are various parameters the bike maker can choose to include or not allow with your display. Obvs, Engwe aren't allowing some of those user settable options on your legal EU 250w model, but are on the more powerful US 750w model.

Hi. I have an Engwe EP2-PRO 250w bike. It is the EU version rather than international. I read online that you can adjust the levels (percentages) of electric motor assist using the display, mine is YL-80C EU version).

 

There are YouTube videos how to do this going into settings of the display, but my display is a different version to those on YT.

 

Rather than the normal 3 'primary 'options(on a YL-80C) and then subsidiary selections, my display offers number 1 - 19 options and nowhere allows what is called (on the Engwe site) 'ASSISTANCE RATIO SETTING OPTION which would allow me to tweak the '%' of motor assist in each gear. (Eg: Level 4 PAS default set to 60% would be better at 80%)

 

I have contacted ENGWE and they said because my bike is NOT the '750w International' bike it is not possible to adjust this (... as fitted with different electronic components??)

 

Any other owners on here with a 250w 'EU' Engwe - have you found the option to change the ASSISTANCE RATIO SETTING?

 

Thanks for your replies.

 

Paul

Here's an old Indian trick. Buy a display for the 750w bike and use it on the 250w one.

https://vi.aliexpress.com/item/1005003617367209.html?gatewayAdapt=glo2vnm

Think I have got to the bottom of this now.... My bike has been equipped with a YL20C not a YL80C!!

Here's an old Indian trick. Buy a display for the 750w bike and use it on the 250w one.

https://vi.aliexpress.com/item/1005003617367209.html?gatewayAdapt=glo2vnm

 

But would that work alone? Is it not the 'controller' that governs the functions of the display??

But would that work alone? Is it not the 'controller' that governs the functions of the display??

Most often the oposite.

while the controller updates the display with speed battery and power metrics for display, its the display that sends the config parameters you have set within it to the controller at start up as a general rule.

Thats very useful information. Thanks for your help.

UPDATE

 

I have now fitted the new yolin LCD display (YL-80C)

 

As discussed above the original (YL-20C) didn't allow me to adjust the pedal assistance settings.

 

I have two problems with the new display:

 

1) The lights do not come on when I switch on the light button. Only the brake light operates from operation of the brake lever.

 

2) The motor is not working when I pedal the bike? I get an error code 030.

 

I have tried a reset of the LCD display.

 

Any ideas what could be wrong?

The display is incompatible with your controller , a firmware issue ?

Error 30 is Comms so the display and controller aren't communicating, it may be a case the YL20/controller pairing is annolgue and the YL80 being a digital isn't compatible.

I thought in this amazing age of technology that everything is digital now?

I thought in this amazing age of technology that everything is digital now?

They are digital, but the two different displays have two different sets of features that go with two different controllers.

There are systems that are anologue.

There are systems that are anologue.

I've nver seen an analogue LCD apart from those ones that only show speed and battery level, which aren't really analogue because they don't communicate with the controller. Have you seen one?

I didn't mean LCD systems but there are the crappy 3spd led systems.

Has anyone on here learned (using the usb interface lead ) how to reprogram an ENGWE 250w controller / hub drive?

With the Bafang system/UART config tool, some parameters can only be set in the controller, but other parameters (like max speed) you can choose to either fix in the controller, or read a user setting from the display. I think Yolin may be similar, but where would you get the software from?

 

I know with my own Fiido/Yolin display, you can occasionally get an Error 30 comms message when it doesn't understand, rather than a physical connection fault. Eg, Cheating wheel size to get maximum/ top motor speed, then cycling so fast it's beyond an acceptable range.

 

Maybe you've got parameters set which conflict with each other?

my bike engwe ep-2 pro was sold to me with a yl20c ,i thought i could [according to the ad i bought from]engage pure electric ,i am not bothered about max speed but i would like to have the electric only , i have changed 10p to 01 or to 02 which is suppose to be electric only or both ,but it does not work ,do i need to change ,ped assist 5p to different i have set it 1-5 any ideas ?guys

FINAL SOLUTION. After many, many months of emailing ENGWE customer support. I have finally!! received a new lcd display and controller that allows me to change the PAS levels as I require. So it is possible but you need to be very persistent with their Customer Service...

They work because they are a compatable paired system .

They work because they are a compatable paired system .

Engwe said they wouldn't give me guarantee it would work for my bike. I took the risk and fortunately it worked out...

Hey! I have the same issue as you did. Can you tell me what you ordered and the cost?

FINAL SOLUTION. After many, many months of emailing ENGWE customer support. I have finally!! received a new lcd display and controller that allows me to change the PAS levels as I require. So it is possible but you need to be very persistent with their Customer Service...

Hi paul,

I’ve read these posts with interest as I’ve not long purchased an Engwe L20SE, 250 watt and I’ve the same issue with not having an option to change the PAS power output settings. In fact there isn’t even the option to change the default 5 PAS settings to 7 or 9 levels but only managed to achieve this by following other Engwe instructions and when eventually in the 7 or 9 options the power levels are very random and there is no option so change them so it seems i need to do the same as you and change the display and controller.

If you don’t mind me asking, what was the cost of the replacement display and controller from Engwe as it seems I’ll have to do the same as Engwe have already told me my model isn’t equipped with the option of changing the PAS options, let alone the power outputs.

Thanks,

Bob.

I have am Engwe L20SE, 250 w, 36v folding step thru and that doesn’t allow the PSA percentages to be changed either.

Im not bothered about going beyond the legal 25 kph, I just want the to be able to select 7 PAS settings and equal out the power settings to get a smother transition as I work up thru the PAS settings.

I asked Engwe how this could be achieved and they told me I’d need to change the current display and controller for the previous models but they no longer have any in stock.

If anyone knows how to get round this please let me know.