FuelX Lite Review

blue_monkey

expert rider
Joined
May 31, 2025
Messages
182
Location
Bristol
Hi All,

As promised here is a my short review of the FuelX Lite module. Note: In the UK, you can purchase through Hitchcock's for around £250. See below.

First off, I think the unit is overpriced. I purchased the Fuel X Lite for the 401 Svartpilen about a year ago and it was around £139. I'm sure the technology is almost the same so an extra £100 seems an excessive mark up. If you live in the US, you can pick it up much cheaper, around $240.

The install was about one hour in total. You could do it in 30 mins with some prep. I used @yonsson excellent YouTube video as my reference. Just need to remove the right side tank panel then two panels below the fuel tank to get access to the 3 connectors that you need. I would rate this as an easy install. The only tricky part is routing the cabling neatly to the module (I tucked my next to the battery).

The difference to the bike is noticeable especially at slow speeds. The bike is much smoother and it really enhances the ride. I would say this is how it should come out of the factory as standard.
At higher speeds it is less noticeable but the bike just feels happier and more refined at any speed. I'm very happy!

Is it worth it? I think it is. Even at £250, because it transforms the low speed responsiveness and that is where the 801 is most twitchy. I've never had the issue of the engine cutting out (fingers crossed) so can't comment on whether it affects that or not. Overall, I would say it is must have for any 790/801 owner.

I can add some photos but to be honest I think @yonsson has it covered with his video.


1751826607981.jpg
 
Hi All,

As promised here is a my short review of the FuelX Lite module. Note: In the UK, you can purchase through Hitchcock's for around £250. See below.

First off, I think the unit is overpriced. I purchased the Fuel X Lite for the 401 Svartpilen about a year ago and it was around £139. I'm sure the technology is almost the same so an extra £100 seems an excessive mark up. If you live in the US, you can pick it up much cheaper, around $240.

The install was about one hour in total. You could do it in 30 mins with some prep. I used @yonsson excellent YouTube video as my reference. Just need to remove the right side tank panel then two panels below the fuel tank to get access to the 3 connectors that you need. I would rate this as an easy install. The only tricky part is routing the cabling neatly to the module (I tucked my next to the battery).

The difference to the bike is noticeable especially at slow speeds. The bike is much smoother and it really enhances the ride. I would say this is how it should come out of the factory as standard.
At higher speeds it is less noticeable but the bike just feels happier and more refined at any speed. I'm very happy!

Is it worth it? I think it is. Even at £250, because it transforms the low speed responsiveness and that is where the 801 is most twitchy. I've never had the issue of the engine cutting out (fingers crossed) so can't comment on whether it affects that or not. Overall, I would say it is must have for any 790/801 owner.

I can add some photos but to be honest I think @yonsson has it covered with his video.


View attachment 7266
So, no connection to the lambda sensors?
 
Correct me if I'm wrong, but from my understanding it's the 2020 - 2022 Duke 790 (Euro 5) FuelX unit.
The Euro 5 FuelX works just with the two lambda sensors at the headers (before the catalyst).
The 801 is Euro 5+; that requires an addional third sensor behind the catalyst.
As long, as you don't decat the (Euro 5+) 801, the Euro 5 Duke 790 FuelX works fine.
The Coober "Husqvarna 801 Series LM ECU" is an alternative that uses the two sensors at the headers and also the third sensor behind the catalyst; and is fully Euro 5+ compatible; and you could remove the catalyst without getting any fault-codes.
 
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Good info, @Tom fortunately I won't be removing the catalyst.

All I can say is, the bike runs great with the FuelX Lite. But it's a pricey upgrade for what it is. I'm guessing the Coober ECU will be even more expensive.
EDIT: €449 for the Coober! Quite an investment. But if you are running a full system it would be the way forward.
 
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Reactions: Tom
Thank you for the detailed post!

I'd love to hear from anyone that has bought a Coober and what their experience is.

What's your idle RPM roughly?
 
Thank you for the detailed post!

I'd love to hear from anyone that has bought a Coober and what their experience is.

What's your idle RPM roughly bl
I have the Coober fitted. See my post for a short review. Pretty much the same results as @blue_monkey Tbf. The FuelX lite was showing as out of stock and still is. I also don´t like the separate map switch but @yonsson offered a solution for that. I´m happy with my purchase and am futureproofed.
 
Happy to hear you are happy with the results, so am I. The FuelX Pro+ has new maps so I don’t think the Coober is better by any means, as long as you don’t decat. I had issues with my bike dying a few times before installing the FuelX. It hasn’t happened since the install and the benifit running low rpms is definitely noticeable.
 
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