• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 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 The previous version was outdated and no longer supported.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!

Poll - 449/511 EFI butterfly removal

449/511 EFI butterfly removal

  • Total voters
    97
Ha ha, cool. :)

A motorbike mechanic mate of mine has an funny saying he rolled out when I told him about mine.
'Parts removed cost nothing & cause no problems'!

Meant to be 'tongue in cheek' but might be true in this case I think.
 
I removed the fly by wire butterfly from my 2012 TE449, now my throttle has no brain I get to do it myself. I like it! The bike has much improved throttle response and it seams to start faster, no waiting for the computer to make up its mind.

I am concerned that my bike may be emitting more carbon.
So I am going to stop eating beans in order to limit my methane output.
This should keep my carbon footprint at about a size 9.5.

:rolleyes:
 
I had a custom map on my 511 SMR (PCV) but I still had the occasional flame out, now my flame outs may be different to everyone elses. I never got flame outs straight off the throttle but I would get countless flame outs/dead throttles when I was clutching up wheelies. Since removing the 2nd butterfly I havent had a single flame out :)
 
The 'dead throttle' is the second throttle not opening up.
Can't happen if the butterfly isn't there!
Awesome dude, glad it is working for you :)

Don't forget to cast a vote in the poll.
 
Pull the EFI butterfly out of mine last weekend. Cant say I really noticed more power or power delivery, but it has 100% removed the dead throttle problem, which is what I was chasing.

I did wind my Air bypass back in about 1/2 a turn (was out 5 3/4) thinking I could run it a little less, but found my flame outs came back on tight single trails. Move it back to 5 3/4 turns and no flame outs, and now no dead throttle. You could say its "like a new bike should be".....

Bike is 2013 TE 511, Map 3, Australian delivered with RACE MAP II.
 
tjb45 said:
Pull the EFI butterfly out of mine last weekend. Cant say I really noticed more power or power delivery, but it has 100% removed the dead throttle problem, which is what I was chasing.

I did wind my Air bypass back in about 1/2 a turn (was out 5 3/4) thinking I could run it a little less, but found my flame outs came back on tight single trails. Move it back to 5 3/4 turns and no flame outs, and now no dead throttle. You could say its "like a new bike should be".....

Bike is 2013 TE 511, Map 3, Australian delivered with RACE MAP II.
Click to expand...
Cool. Yep, FBW throtte can't be 'dead' if it isn't there! :)

So it wasn't snappier down low for you, as in quicker to respond?
Removing the butterfly doesn't make more power outright, it'll be the same, but certainly made my bike snap like it should be when cracked open, not doughy.
:)
 
Pulled the butterfly today. My bike has map3 and fmf power core. I did not adjust the TPS or idle. It ran good before the removal and better after. With these 3 mods the bike runs strong. One of the best changes is hot starting. I was having difficulty with that. If I added a little throttle it did not help. Now I can add a touch of throttle and it fire right up. Doesn't seem to make much sense with the fbw butterfly being open a bit, but it did make a difference. From the bike purchased to now is night and day improvement.
 
I put a full free flowing FMF on mine yesterday. Still runs very good and has more power. I know some guys that ran the FMF and removed the BF had some bog issues. Not mine. It does pop on decel so will JD that out.

IMG_20140618_181803.jpg
 
OKAY...finally carved some time to mess with the 449 this weekend and was contemlpating the BF removal (though I only have hot start problems on occasion) so I came back to this thread and reviewed/caught up with the progress.

Searched this thread, then forum, then the entire site for more info on this engine braking stud removal. WTF???? Anybody got something to point me in the right direction? Pics? Bueller? I'm about ready to start making my eyes bleed in the repair manual just to find it. The things I see about grinding/punching out a pin make me think this is not something easily reversed like just taking off a couple of screws for the plate.

Then again maybe I'll just do an oil change and go for a ride. Still messing with my JD - only 2 rides on it so far. I don't do more than one mod at a time. The engineer in me won't let me sleep if I do! :eek:
 
Thanks Kelly. So just to be clear, both mods are required? I've never had a hanging throttle issue before. Perhaps I should take out the BF, then test?

My ECU map is the locked kind and I'm one of the lucky ones who hasn't had the nasty flame outs and dead throttle stuff. I think the throttle has only gone dumb once and its never done it again after the JD. I agree with you that making it too rich on the lower settings with the fueler does more harm than good. I found the point where a quick whack of throttle would kill it and leaned slowly to where I've got it set now.

Jeez maybe I'll even get a pipe some day...
 
You do not have to remove the throttle stud. You can just do the butterfly first and see how that is. Removing the throttle stud gives you lots of engine braking and prevents 'hanging idle'. I believe Kelly just did the butterfly and not the stud.
 
Gracias! Gotta do some chores today first, hoping for a nice maintenance evening whilst smoking a nice pork shoulder. Cold beer, fresh oil and butterfly removal. Then hopefully a day in Gorman to check my work Sunday!
 
The guys are correct. You can do just the butterfly & have a have a test from there. Even if it needs a little tweak on the JD, I think you'll be surprised by the results. I still have my butterfly......in a bag! :)
It won't ever be going back in ha ha.
 
I remember many years ago, removing secondary butterflies on a GSXR1000, and it was very effective.
Suzuki, and yamaha had those secondarys on their superbikes, I think to give smoother throttle response,
and maybe to keep the newbies from flipping them over, LOL!
 
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