• 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 The previous version was outdated and no longer supported.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!

Slip-on silencer suggestions for TE511?

bigmo said:
A bit back on topic...

OP - I went the route of modifying the stock can (albeit the other stock can). It DID make a difference...but was not what I was looking for.

I wound up with the FMF with the quiet core insert and could not be more pleased. In additon to, and maybe more importantly, I also shed right at 5 pounds. That missing 5 pounds up so high makes the bike immensely more maneuverable.

I am a huge advocate of dropping easy weight off the bike. With a lithium battery and an FMF you drop a full 10 pounds off the bike...you are flirting around with 250 4S weights now...MUCH more usable in the woods.
Click to expand...
The weight is a big issue and it also seems to cool better. There are a lot of things you can do with the insert to make it quieter. Closing up the end and forcing gasses to flow around the sides will also reduce the overall sound while keeping back pressure in check. The resonator helped me the most on this engine. It provided the back pressure of a long header at low rpm and exhaust scavenging at high rpm. Flame outs were nearly non-existent.

Here's a core with half moons welded alternatively. Sound waves are forced upward into the absorption packing while exhaust gasses are evacuated. This greatly reduces sound with little back pressure increases.

b-quiet-core.jpg


Here gasses are forced to flow around the outside of the insert and then out. This helps cancel some of the sound traveling down the silencer core.

220-BBR-1014_A_Large.jpg


http://media.bbrmotorsports.com/Riding/Windows/cancelcore09.wmv
 
Tinken said:
Flame outs are due to a lean condition. Increasing that condition will increase the chance for flame outs. Toss a Powercore 4 on without an insert or fuel tuner, we'll see if you are still laughing.
Click to expand...

All good big fella.

Just saying, my bike flamed out from day one, with the Akra installed, until I pulled the butterfly & adjusted the tps.
Yes, would likely have been worse with a more open exhaust, would have been better if MAPII was tuned for the supplied muffler from factory too.
I know it's old news for you , leaving it alone.
 
If anyone is interested, I am selling my ZipTy Racing Fmf exhaust. It will not fit the 511 unfortunately but it will fit the te310 and txc310 from 2012 and probably a few years before that even. It will come with everything you need except for the longer bolts. I am also selling the quiet insert (bought this separately though fmf) and the spark arrestor (also bought separately through fmf).
 
I just pulled the trigger on a PC4 from OEM Cycle. I did not order an insert (they did not have any) and I run MAPII. From the below statement, I infer that I am inducing flameout issues into this fantastic bike?

"Flame outs are due to a lean condition. Increasing that condition will increase the chance for flame outs. Toss a Powercore 4 on without an insert or fuel tuner, we'll see if you are still laughing."​
 
You will have flame outs for sure. Just off idle when you first touch the throttle, and when clutching in to decel.

You can remedy both of these by turning the air screw out which will raise the idle also but it seems to get past the point of "coughing" at around 2200rpm or so. I did this termporarily to keep my bike rideable as a daily rider.

Then I vented my airbox and it got wose again with the clutching causing flameouts.


My power commander leans out alot of the settings from ZIP-Ty's race map 3. SO I would send it in to zip ty to get race map III flashed. It is cheap and affective. Then if you still have flameouts I am confident that the air screw will help or fix it. If not you can remove the secondary throttle plate instead of or in addition to the other mods. It will make the engine MUCH snappier and more responsive, but wont help with lean or rich conditions. May help with flameouts and the problem of loss of engine braking.
 
huskylove said:
You will have flame outs for sure. Just off idle when you first touch the throttle, and when clutching in to decel.

You can remedy both of these by turning the air screw out which will raise the idle also but it seems to get past the point of "coughing" at around 2200rpm or so. I did this termporarily to keep my bike rideable as a daily rider.

Then I vented my airbox and it got wose again with the clutching causing flameouts.


My power commander leans out alot of the settings from ZIP-Ty's race map 3. SO I would send it in to zip ty to get race map III flashed. It is cheap and affective. Then if you still have flameouts I am confident that the air screw will help or fix it. If not you can remove the secondary throttle plate instead of or in addition to the other mods. It will make the engine MUCH snappier and more responsive, but wont help with lean or rich conditions. May help with flameouts and the problem of loss of engine braking.
Click to expand...

Thanks for the quick reply. Is the "secondary throttle plate" the butterfly mod that was infamouly mentioned earlier in this thread?
 
Waverider said:
I just pulled the trigger on a PC4 from OEM Cycle. I did not order an insert (they did not have any) and I run MAPII. From the below statement, I infer that I am inducing flameout issues into this fantastic bike?​
​
"Flame outs are due to a lean condition. Increasing that condition will increase the chance for flame outs. Toss a Powercore 4 on without an insert or fuel tuner, we'll see if you are still laughing."​
Click to expand...
http://www.ebay.com/itm/191123570978?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
 
huskylove said:
tinken is correct bud, with the fmf pipe and smallest insert and racemap ii my bike was perfectlt fine with no flameouts.

i lost my exhaust insert and it stalled all the time, so i vented my airbox and inatalled a pcv with auto tuner and the power difference is staggering. bike hits the revlimiter with ease.

it is worth every penny. With the pipe and airbox mods. It takes the bike from a 35hp turd to a screaming banshee.


removing the butterfly just made it much much snappier.
Click to expand...

I have a 2013 TE449 that experiences stalling on slow technical climbs. I first noticed this only after installing an FMF powercore 4 and having a local shop reprogram the mapping to what they called (according to KTM) the akro pipe setting) They also told me there is no such thing as the Race map 3 setting for this year bike. The other thing I have been told by my local shop is that I need to do an emissions deletion. If possible, can you please direct me on the following: Butterfly removal, emissions deletion. Unfortunately I cannot spend the money for a power commander at this time.
Thanks,
Bryan
 
Bryan Allison said:
I have a 2013 TE449 that experiences stalling on slow technical climbs. I first noticed this only after installing an FMF powercore 4 and having a local shop reprogram the mapping to what they called (according to KTM) the akro pipe setting) They also told me there is no such thing as the Race map 3 setting for this year bike. The other thing I have been told by my local shop is that I need to do an emissions deletion. If possible, can you please direct me on the following: Butterfly removal, emissions deletion. Unfortunately I cannot spend the money for a power commander at this time.
Thanks,
Bryan
Click to expand...


Sent you a PM.
 
So, I installed my FMF PC4 with quiet insert. The pipe is awesome (I cant believe I did not do this earlier); however, I now get the flameouts. Will race MAP3 help alleviate this? I am reluctant to pull my ECU, package it, and put it on a round trip to mainland.....
 
Waverider said:
So, I installed my FMF PC4 with quiet insert. The pipe is awesome (I cant believe I did not do this earlier); however, I now get the flameouts. Will race MAP3 help alleviate this? I am reluctant to pull my ECU, package it, and put it on a round trip to mainland.....
Click to expand...
It will help greatly. Do not send your ecu without insurance of at least $500.
 
Most flam out can be corrected with a TPS set for a richer setting at idle. a +.01 to +.02 voltage change in the TPS will make a big difference in the mixture.

Paw Paw
 
Quick question. Im putting together my FMF system for my 2012 TE449. I have so far the TC flange, outer sleeve, graphite gasket and springs. Just received the TC megabomb and the TC FMF Q4 Ti slip-on will be delivered on Wednesday.

So for my question: I was wondering if there is any other parts i might need? Is there a mid pipe to connect the megabomb to the Q4 muffler?
 
Received the FMF Q4 muffler last night. So The Q4 does have a midpipe witch was included. I'm going to install the system and adjust my jd tuner this weekend. I will post my review in my "post your tuner settings" in the EFI section.
 
So I just installed my fmf system. I noticed that the Megabomb head side doesn't fit inside of the other Sleeve #8000H5994. Does it's actually slide inside? Can anyone post a picture of there Megabomb where it connects to the head?
 
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