• 4 Stroke Husqvarna Motorcycles Made In Austria - About 2014 & Newer
     FE = 4st Enduro & FC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

FE/FC Switching to VP fuel, any issues with injection adjusting?

octagon pilot

octagon pilot

Husqvarna
AA Class
I have been running pump gas with ethanol all summer. Now, not able to get out as much, so I was looking around for some ethanol free fuel for the bike, a 2016 KTM 350xcf.

In my search, I found out that a place locally has VP fuel available, namely VPR in 5 gal metal containers.

If I get this VPR stuff and switch from the pump premium ethanol junk I have been running all summer, will my fuel injection handle this ok as far as adjusting the mixture?

Also, I am assuming this stuff is more stable over time than ethanol free pump gas, which I can also get locally...

Recommendations, tips, info appreciated
 
I ran VPR for years in my 4 stroke. Better throttle response and never had to put fuel stabilizer in it over winter months.

A lot of Gncc teams run it.

You should not have to re map.

Had less flame outs and deceleration pops.
 
You may need to turn up your idle. Also I recommend starting the bike and letting it idle for 5 minutes without touching the throttle or anything. Then shut it off and turn it back on. This should allow the ecu to reprogram itself to the new conditions. (Temp, alt, octane, etc.)
 
I have wondered about trying it as well. Living on a lake non-ethanol is readily available, but some times quality can be questionable. This got me thinking about it again. So I called VP and inquired about purchasing some. I only live about 30 min from their manufacturing facility. I can drive down and buy direct from them for $56.08 per 5gal can. Its about $3.50gal for 90 octane non-ethanol about a mile from my house. So, its $17.50 vs $56.00 for 5gal. Is it worth it? Still thinking on that....

They did say that an open container is good for about six months. Sealed, about two years. So, there is that. But we ride year round here, so I doubt it would ever sit for over a month anyway. I guess I am just looking for something else to spend money on. And I love the smell of race gas :)

I guess I am looking for somebody to talk me into it.
 
You should not have to make any adjustments but there is some performance gain to be had if you do. You can take advantage of the higher octane and slower burning properties of vp110 by adding a little more fuel and spark advance to the lower rpm range and leaning out and retarding spark advance on the upper rpm range. You could not get away with this on pump fuel because it would detonate. I've done this on many different engines (Yamaha with their GYTR tuner makes it the easiest) but I don't know what is possible when it comes to re-mapping a KTM/Husky.

I buy VP110 in MO for $8.50 per gallon and $7.25 per gallon in CO when I'm there. The price diff is dependent on how it is purchased form VP, the more you buy in bulk the cheaper it gets. I run it in everything I own including chainsaws, lawn equipment and all my dirt bikes.
 
VP makes a lot of different fuels. I asked specifically for pricing on the VPR. There are places I could get the standard VP110 for less. But with that you run into the issue of how old is the fuel? They buy in bulk and keep it in a storage tank.

That also brings up the question of which one would be the best choice.

http://www.vpracingfuels.com/motocross.html
 
Thanks for the info guys!

I've difinitely been on the VP site a bit the past 24 hrs!

I found another shop close to me that sells VP by the gallon from a drum. They have several of the VP fuels available, but recommended T4 as an easy replacement for pump gas. close to $13/gal. They are a KTM dealer and say T4 is fine for stock mapping, or I should say, stock mapping is fine for T4.

Age of fuel stock is a concern i have, not just for the VP, but I figure the non ethanol places may have the same issue of age before I buy it.

Also, the amount of particulate matter in the fuel is another concern. I don't know if their delivery systems are well filtered for these. I don't have a sock or screened funnel, prolly need to get one...

I'm leaning toward the T4 for the winter months, thinking it'll last a bit longer than Non-E pump premium gas. Im figuring I'll be lucky to get out once a month, so this next fill up will be in there a while, maybe 2-3 months. Or maybe we'll have awesome weather in Dec-Feb and I'll be able to ride a bunch!
 
I was told by a VP dealer that VP110 has a 3 year shelf life with no additives. VP also makes a 100 octane fuel for museum and classics that has a 30 year shelf life if you're worried about fuel going bad.
 
$13/gallon would be expensive around here. I'm paying $8/gallon from the drum for Sunoco 110, I think VP110 was $10/gallon. :cheers:
 
I drive by a airport every day to and from work,friends have told me I can buy AV gas there by the gallon in my on container, does anyone know anything about it or have any experience with it ? I would like to try it in my 2 stroke and my FI 4 stroke. mainly to not worry about the ethanol problems,but performance gains would be nice also !
 
Hey hillbillly, here's more info: https://en.wikipedia.org/wiki/Avgas
It's still pretty common to burn avgas in dirt bikes. 100ll is the most common I think and I've burned it in 4t XRs in the past and my racing bud used it in 2t YZs. It works great and gives a nice boost in performance. You may have to jet accordingly, but it's worth it.
:cheers:
 
I've used AV100LL and while it's much better than pump gas and at $4 per gallon it's only $1.60 per gal higher than no ethanol 93, the down side is it's much less dense and missing the long slow burning qualities that give VP110 the advantage at lower rpms in a hard pull. AV fuel is rated differently so it's actually around 96 octane. If you've modded your 2 stroke for 100 octane or better race fuel AV100LL probably won't work for you unless you're riding at very high altitude. I can use it in my yz125 and my Husky with no problems but my 13:1 Honda 500 vintage flat tracker doesn't like it and my son's yz450 runs noticeably better on VP110.
 
Thanks guys.. lots of knowledge on this site, I think I will give it a try, just wasn't sure if it would cause any issues I didn't know about..Thanks
 
I always got a lot of lead build up on my pistons using VP110. 2 stroke and 4 stroke, carbed and FI... Since I went to Sunoco unleaded 98 octane (260-GTX), no build up at all.
 
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