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 The previous version was outdated and no longer supported.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

PCV Auto Tune

gillies

gillies

Husqvarna
AA Class
Does the PCV Auto Tune adjust for altitude and how quickly will it do this? I frequently ride at locations between 1,000 and 7,000+ feet - Phoenix desert to Flagstaff mtns. Will the Auto Tune recognize the altitude change and immediately adjust air/fuel accordingly? Does it work in a similar manner to my car or GSA?
 
As far as I know, the PCV doesn't have a separate MAP sensor in it.
There is a spare 5v input you could hook up to it & make a map, but as I don't have any first-hand experience with them, I'm not the guy to ask there.

There is a MAP sensor on the TE449/511s, but it isn't used for engine load measurements. (The engine will run fine with it pulled from the throttle-body as a test, still wired in - no 'Fail' messages)
As far as I can tell, it would likely be there only to measure current atmospheric pressure at switch-on PRIOR to winding the engine over on start-up.
As I see it, if you climb to the point where it runs poorly, if you shut it off, wait for the system to shut-down & restart, it would take on the new atmo reading.

Just my theory, for what it is worth.
 
Yes it adjusts the air fuel ratio, the map sensor does not matter, it works off of the O2 sensor supplied from power
commander. It works pretty slow, but would definitely help. Most on here that ride those type elevations and say
the stock bike does well. If you all ready have PCV, its an easy matter to have 2 maps set for different applications,
 
Yes it would. It changes it basically immediately. It only needs a few miliseconds to 'see' the air/fuel mixture at a certain RPM/throttle position and make adjustments.
 
2200' to 7000' here, PCV/AT, FTMFW!
I got two maps set up. One for fuel mileage and another for power. Works great.
 
Dangermouse449 said:
As far as I know, the PCV doesn't have a separate MAP sensor in it.
There is a spare 5v input you could hook up to it & make a map, but as I don't have any first-hand experience with them, I'm not the guy to ask there.

There is a MAP sensor on the TE449/511s, but it isn't used for engine load measurements. (The engine will run fine with it pulled from the throttle-body as a test, still wired in - no 'Fail' messages)
As far as I can tell, it would likely be there only to measure current atmospheric pressure at switch-on PRIOR to winding the engine over on start-up.
As I see it, if you climb to the point where it runs poorly, if you shut it off, wait for the system to shut-down & restart, it would take on the new atmo reading.

Just my theory, for what it is worth.
Click to expand...


Just found this in the workshop manual.
As I thought, the MAP is only for atmospheric measurement & therefore could only take a measurement when the engine is stopped as it is ported into the throttle-body. (Note line #3)


TE EFI.PNG
 
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