• 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 The previous version was outdated and no longer supported.

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    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!

How do i stop flame out on 449

James Patton said:
The PCV does reset the tps, and seems to work fine. Running the zipty map and bumping the fuel
5% at 1500rpm up to 2500, adjusting air bypass I have not had a flameout/stall since the mod.
The voltages shown at 0 throttle are .6 something and 3.99+ at 100%.
Click to expand...

What rpm does your bike idle at according to the PCV software? As soon as I drop mine below 2000 it will begin stalling off idle if the throttle is whacked under load. What throttle positions did you add more fuel? I tried removing the FBW flap but it didn't do anything for me so it was reverted back to stock.

I am running an auto clutch and it slightly drags when idling in 1st gear slightly lowering the rpm - if I whack the throttle it stalls. At or above a 2000k idle it does not stall but the idle feels a little high. I'm looking to get my idle as low as possible, within reason.
 
It idles at about 1950. Since I set fuel up 5% it does not stall if it gets a little below. That being said, any bike,
My DRZ400 or my WR125 will stall if the RPM get too low. The WR and the 511 will both idle around in 1st gear
And respond perfectly with a twist of the throttle. If you do alot of technical stuff you might want to try a smaller
Countershaft sprocket, I sometimes run a 13/51 for technical single track, though with that gearing I don't crusie
It over 50mph. Since the PCV, and air bypass adjustment I can run as much as 13/40 and still get by on the
Single track and it rips on the road putting along at 55/60mph, and still easily lifting the front wheel with just
The throttle in 1st.
 
Imagine if you took the accellerator pump off a 4 barrel carburetor and it didn't have a vacuum secondary (a secondary butterfly). When you punched the throttle, the engine would die or bogg massively. Essentially that is the case on the seriously lean 449. By boosting fuel %'s at low throttle, we are creating a "virtual" accelerator pump.
 
Tinken said:
Essentially that is the case on the seriously lean 449. By boosting fuel %'s at low throttle, we are creating a "virtual" accelerator pump.
Click to expand...


Does the PCV software have a separate 'accelerator enrichment' function at all? That would be another useful setting.

(Most expensive stand alone (Motec, Haltech etc) car systems have a setting like this but are at least three times the price of PCV)
 
yes, you can add extra fuel when throttle is twisted by % and for rpm
duration? If you go to powercommander .com and click on support I think,
They have good directions on how to use all of the various functions, fuel, ignition
Timing, ect. There is alot of tunability, a really good product, simple to use,
And with ziptys maps, performance is enhanced.
 
Tinken said:
Imagine if you took the accellerator pump off a 4 barrel carburetor and it didn't have a vacuum secondary (a secondary butterfly). When you punched the throttle, the engine would die or bogg massively. Essentially that is the case on the seriously lean 449. By boosting fuel %'s at low throttle, we are creating a "virtual" accelerator pump.
Click to expand...

Would you mind sharing what a typical fuel table for a pcv may look like in the lower rpm to help with low rpm flameouts on the TE449? I realize mods and the environment play a roll but I'm still curious. I have tried various setting but always fallback on setting the idle around 2000-2100 and it stops flaming out. I run a FMF slip-on with quiet core, stock air filter, pcv (zipty factory map) w/ auto tune, jumper in, map 3. Other mods include your oil breather vent among others but these should not affect AFR.
 
The only change I made to the zip ty map was placing a 5 in the boxes at 1500 rpm up to 2500 at 2% to 10% throttle
My bike idles at 1950 so 2000 is probably ok. Look at your fuel table. What worked for me may not be best
For you, don't be afraid to try to richen it up in small amounts at the smaller throttle openings.
Read the support & videos on PC5's website. I do not have the autotune and since making the changes at
Lower RPM I don't think I will pop for it. Your zipty map has 0's at 2% 1500rpm on up, this is where upping
The # richened it up enough to make low end throttle response as it should be...
 
James Patton said:
The only change I made to the zip ty map was placing a 5 in the boxes at 1500 rpm up to 2500 at 2% to 10% throttle ...
Click to expand...

Thanks. This is what I assumed you did but wanted confirmation. I am not running auto tune below 2%, but I have tried it with an AFR of 13.2 to see what it does to the trim table.
 
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