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Offline Procycle98

I have run a bunch of U800s and all of them have the same hesitation just off of idle.  Some people saw it is clutching some say it is fuel.   We tried a new ECU off of a 2017 Z800.  FIXED!!!  It was like night and day.  We are contacting CF now to see if we can get this taken care of under warranty.  I will keep you updated.
'16 Z 800 EX
CFM front bumper
Rigid Industries light bar
Super ATV split windshield
PCV
Twinair filter
Russian door
28" Kanati Mongrels

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Offline Jimbo

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #1 on: September 30, 2017, 12:02:46 am »
I have run a bunch of U800s and all of them have the same hesitation just off of idle.  Some people saw it is clutching some say it is fuel.   We tried a new ECU off of a 2017 Z800.  FIXED!!!  It was like night and day.  We are contacting CF now to see if we can get this taken care of under warranty.  I will keep you updated.
Yes, they do have that hesitation unless you get right into them. Curious to hear how this comes out...
2016 U force 800 EPS | UNI filter | Overhead gun rack | GPS | Video Cam | 28" Bighorn 2.0 tires | 2" Lift | Monster Nomad blue tooth speaker | 2 piece windshield with vents | Rear curtain w/ window-Zippered side curtains | Bed seat w/storage | 1 1/2" Precision Motorwerks wheel spacers |
Rear cage, more lights, Elka suspension to come
Other stuff:
Max ll 6 wheel drive amphibious ATV
Kawasaki Bayou 400
Yamaha 200 Big wheel

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Offline MarAgt

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #2 on: September 30, 2017, 10:07:54 pm »
Sub’d

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Offline Andrew1au

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #3 on: October 03, 2017, 06:42:41 pm »
Perhaps the delay is there to prevent wear on a certain part the z800 doesn't have?

Just an idea anyway.  :-\
2017 Uforce 800 EPS
Full Underbody Armour
Twin Snorkle (cvt and engine)

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Offline MarAgt

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #4 on: October 03, 2017, 07:13:29 pm »
Perhaps the delay is there to prevent wear on a certain part the z800 doesn't have?

Just an idea anyway.  :-\

They share many of the same parts to include the motor and transmission.  What damage would a purposeful hesitation prevent? 

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Offline MarAgt

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #5 on: October 03, 2017, 07:15:12 pm »

What does a ZForce ECU cost?  Why can’t the UForce ECU be remapped? 

I have run a bunch of U800s and all of them have the same hesitation just off of idle.  Some people saw it is clutching some say it is fuel.   We tried a new ECU off of a 2017 Z800.  FIXED!!!  It was like night and day.  We are contacting CF now to see if we can get this taken care of under warranty.  I will keep you updated.

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Offline Dutchtrekker

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #6 on: November 04, 2017, 05:46:59 am »
@procycle98

Any news about Warranty ????

Gr. Cees.

CFM U800 with 4406 km.

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Offline Procycle98

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #7 on: March 07, 2018, 12:47:27 pm »
We replaced the ECU/ECM with the Z8 unit.  PROBLEM SOLVED.  Huge improvement.  part number 0800-174000-2000.  Anywhere from $285-$325 i would guess.
'16 Z 800 EX
CFM front bumper
Rigid Industries light bar
Super ATV split windshield
PCV
Twinair filter
Russian door
28" Kanati Mongrels

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Offline Jimbo

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #8 on: March 19, 2018, 09:13:52 pm »
We replaced the ECU/ECM with the Z8 unit.  PROBLEM SOLVED.  Huge improvement.  part number 0800-174000-2000.  Anywhere from $285-$325 i would guess.

So was this fix warrantied, or not?
2016 U force 800 EPS | UNI filter | Overhead gun rack | GPS | Video Cam | 28" Bighorn 2.0 tires | 2" Lift | Monster Nomad blue tooth speaker | 2 piece windshield with vents | Rear curtain w/ window-Zippered side curtains | Bed seat w/storage | 1 1/2" Precision Motorwerks wheel spacers |
Rear cage, more lights, Elka suspension to come
Other stuff:
Max ll 6 wheel drive amphibious ATV
Kawasaki Bayou 400
Yamaha 200 Big wheel

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Offline Procycle98

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #9 on: April 13, 2018, 07:13:48 am »
No luck with warranty but I feel like i heard someone say they got one warrantied a year or two go.  I don't know why they cannot reflash the ECU?  I know my wife's Accord had a reflash but I don't think it is common practice in the power sports industry.  I know Cat had done that years ago to some machines and I would imagine that some of the new Can Ams can. 
'16 Z 800 EX
CFM front bumper
Rigid Industries light bar
Super ATV split windshield
PCV
Twinair filter
Russian door
28" Kanati Mongrels

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Offline 2Lethal

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #10 on: May 05, 2018, 10:51:23 am »
I have the 0800-174001-1 in my uforce 800 would the 0800-174000-2000 improve the performance of my 800?

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Offline Dutchtrekker

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #11 on: June 07, 2018, 03:58:15 am »
Well............someone has to do it...........

I ordered the 0800-174000-2000 ECU and will put it in my U800.
It will be here ( Europe) in 2 weeks ( Alpha Sports ) Let's find out if the hick ups will stop.
Gr. Cees.

CFM U800 with 4406 km.

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Offline bchitwood73

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #12 on: June 18, 2018, 10:41:57 am »
Any update on this?

My 2018 UForce seems to be doing the same thing and its very annoying. I have to think that this would be "fixed" under warranty.


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Offline Big Bob

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #13 on: June 18, 2018, 02:24:35 pm »
Bought a 2018 U Force 800 and having the same low speed bucking as the rest of you, working with my dealer who is going to CF  Moto and then if no luck I will go at them myself as this is clearly a CF Moto problem that should be covered. will let you know what I find out.

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Offline Dutchtrekker

Re: UForce 800 low speed drive ability hesitation bog lean condition FIX
« Reply #14 on: June 20, 2018, 01:08:58 pm »
Track & Trace:

The ECU is shipped; now between Amerika and Europe. ( Amsterdam) It will be here within a week.
Due to the low $ and the high €, the part is under 300 USD all in.
Gr. Cees.

CFM U800 with 4406 km.