FuelX Lite Review - Svartpilen 401

FuelX Lite adjusts based on mods, riding style, weather conditions. FuelX Lite will help protect your engine in closed loop scenarios where the motorcycle tends to run lean. With the air filter setup, you will need something like this to help optimize the fuel mixture.
"Closed loop" is where the O2 sensor is used. This is typically where emissions standards are at play and the Svartpilen 401 tends to run lean. Closed loop is based on throttle position and RPMs. After that, you enter Open Loop where the ECU fully controls the fuel mixture and your bike runs richer. "Jerky" response and stalls are often because this motorcycle runs lean on fuel. FuelX Lite (or Pro) will optimize that and smooth everything out. You will use more gas, but that's not a bad thing because the goal is not cost savings in running lean on gas; the goal is optimizing the fuel mixture for the best motorcycle performance and long-term engine protection.
When you throw in air filter modifications (like K&N High Performance Air Filter and DNA High Performance Air Filter), it is important to get that fuel mixture right. You have more air intake, but the same fuel mixture unless you install a FuelX Lite or something similar (or re-tune your ECU).
If you are concerned or want to optimize at higher RPMs/throttle positions for Open Loop, then consider an ECU re-tune or another modification like an ECU replacement.
It's pretty easy to install. I did a video on that.
• FuelX Lite Installatio...
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[@officialhavre]

People keep saying "improved throttle response." What does that even mean? What is good throttle response? :D I installed one today and I don't feel like its that big a difference, maybe it needs time. But then again its still a big ass thumper so its never going to NOT be jerky in low speed. Might be slightly less tho and smoother running in lower revs when cruising the city.

[@ridingwithgravity401]

I think of it as steady and smooth performance from the throttle. I didn’t honestly notice anything on my first few rides but then it was a noticeable difference. Before the bike sort of jerked forward a bit more. Now it is very consistent and I have a more predictable way to work the throttle for the desired outcome. Accelerate slowly is smoother. Accelerate quickly is of course super fun.

[@officialhavre]

@@ridingwithgravity401 Interesting, will see how mine develops going forward. 🙂

[@baldbipolarbikerboy]

​@@officialhavrehow is it bro

[@officialhavre]

@@baldbipolarbikerboyIt helps. Obviously it can't do 100% magic but indeed it's better. Engine runs smoother.

[@TheBigBlueMarble]

If the FuelX lite does all that, what is the point of the FuelX Pro?

[@prosongo2007]

Hi, why from time to time you get this orange led flashing? Is this a check engine notification?

[@prosongo2007]

in 3:20

[@ridingwithgravity401]

I restarted the bike at that light. When you do that the ABS light turns on. It turns off when you start moving. So that particular light was the ABS.

[@kceip]

Do I need it if I only have full system exhaust (header and slip on) but no air filter mods? I only want to know if my engine will be safe.

[@ridingwithgravity401]

Full exhaust usually the recommendation is to also do a fuel management system, which has its own benefits anyway. This article on exhausts has a little snippet about that.
www.revzilla.com/common-tread/motorcycle-exhaust-101

[@ErelasInglor]

In terms of fuel economy, how much are you getting by the numbers as a difference from the OEM? Do you need to have any other mods installed or can this be equipped to a bike solely without any other additions?

[@ridingwithgravity401]

I need to ride a bit more to have a good fuel answer for you. Right now I’m using more fuel because I’m pushing my Svart more at higher revs to test out the performance across different conditions. I’ll make a note to report back on this.
You could do the FuelX Lite by itself for sure, with no other mods.
Here is the product description (see below). That’s just the marketing message though, so…
Most noticeable for me was no more jerkiness. (I sometimes miss the jerkiness LOL but it is seriously much smoother). They say more torque but I honestly can’t tell.
Some bikes have stalling problems (I think the KTM Duke 390 in some cases was one) and I have heard it is coupled with emission standards and resulting fueling. This could potentially resolve that because it auto tuned the fuel mix.
I only had one random stalling issue (knock on wood) in my first 2500 miles. All the rest were my own darn fault.
Marketing Message:
"FuelX is a state of the art electronic plug-in fuel-injection optimizer for modern engines. It autotunes the engine to its best operational parameters, constantly monitoring, learning and adapting to the engine’s condition, wear and tear, riding style, add-ons (such as air filter and/or exhaust), as well as the environmental conditions such as temperature, humidity, altitude etc. It always ensures that the engine performs in the safest and most optimal zones.
WHY FUELX -
Eliminate/reduce jerkiness and stalling
Reduces downshifts
Increases torque
Better throttle response
Engine runs cooler
Enhanced engine life"

[@ErelasInglor]

@@ridingwithgravity401 Look forward to what you find! I’ve looked into the product before, but hadn’t seen a review on the mileage before and after for fuel consumption. Good to know it is a stand alone product! I may try it out on my Scram 411.

[@ridingwithgravity401]

First fill up I was at 48.6 Miles Per Gallon instead of 63.3 Miles Per Gallon. That's with K&N High Performance Air Filter, DNA Airbox Cover (Stage 2 Air Filter), LeoVince LV10 Exhaust, and FuelX Lite. I wish I had some mileage readings with just the FuelX Lite, but I didn't capture those. I'm definitely riding more aggressively because she's so peppy and I'm sure that is hurting my gas mileage. I'll keep tracking it but I'm guessing about 50 is going to be my average now. Worth it. 😃

[@ErelasInglor]

@@ridingwithgravity401 So shouldn't the FuelX Lite give you more than the 63.3 mpg that you mentioned above if that was what you originally had had?

[@ridingwithgravity401]

I have heard that a lot of Svarts run lean in stock and so the FuelX Lite might optimize in the direction of using a little more fuel. I don’t have much data though because then I went ahead and did high performance air filters that are increasing the horsepower and I’m just generally using more fuel now.
I can say this. I used to gas up and it would tell me my range was 180 miles. After the FuelX Lite, I gassed up a few times (before I put in the air filters) and it read 160 or 140, so it seems like my motorcycle was running lean on the fuel mixture.

[@ptiscool3334]

Does yours go from flashing orange to green periodically? It seems to be flashing red until throttle input is given then it turns green.

[@ridingwithgravity401]

I haven’t noticed it doing that, but honestly after it was installed and working I haven’t fussed with it.

[@ridingwithgravity401]

This thread is a good one about the lights.
www.reddit.com/r/svartpilen401/s/X59oFCAU4z

[@TommyStarwind]

Better to do a higher octane then?

[@ridingwithgravity401]

I prefer a higher octane. 👍🏻

[@Astrojamus]

how do you use the quickshifer on this

[@ridingwithgravity401]

Just shift up or down but without pulling in the clutch.
You just have to be in the right rev range. See manual for more info.
Shifting UP just need to be above 2200 RPMs.
Shifting DOWN:
6 to 5 below 7700 RPMs
5 to 4 below 7500 RPMs
4 to 3 below 7200 RPMs
3 to 2 below 7000 RPMs
2 to 1 below 6500 RPMs

[@Astrojamus]

@@ridingwithgravity401 yeah i saw that in manual. guess I wasnt going the right rpm because I went to shift and it didnt go. but i also have a rekluse auto clutch so idk if thats interfering

[@ridingwithgravity401]

@Astrojamus After I adjusted the slack in my clutch, the quickshifter started working better. I found it unreliable myself but now it seems to be working fine.

[@bao7190]

@@ridingwithgravity401 can you make a short video about how to adjust clutch? I have the same issue with quickshifter. Thanks!

[@ridingwithgravity401]

@bao7190 Absolutely! I will try to get one out there within the next week.

[@haymobachmaier]

Good for a 125 too?

[@ridingwithgravity401]

powertronicecu.com/product/fuelx-lite-husqvarna-svartpilen-vitpilen-125-2017-2022/
I presume you will find it similarly smoothed out the ride. Any 125 owners out there with views?

[@respawnicon]

so to be clear, you should install this in tandem with the performance air filter? Is there another component to that filter? I've heard u talk about it but I didn't quite understand what it was

[@ridingwithgravity401]

You can run the FuelX Lite by itself as a great mod.
But if you put in high performance air filters, then you could damage your engine unless you have the FuelX or something like it to modify the fuel mixture to accommodate the fuel balance needed for the high performance air filters.
I did the K&N High Performance air filter and the DNA Stage 2 air filter. The K&N replaces the stock air filter. The DNA replaces the solid cover above the air filter, so swapping that will also give you a little more power.
Those are available on Amazon. The motorcycle is super fun with those air filter mods. (Already a fun bike, just adds to the fun)

[@respawnicon]

@@ridingwithgravity401 oh ok yeah its that dna cover that I was wondering about, ok very good. Thank you for clarifying. I love the bike too. I just got through the 'break in' period so I'm looking to optimize it going forward, your channel is excellent. Thank you for the work you put in.