Author Topic: Husqvarna 562xp autotune  (Read 12353 times)

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Offline EHP

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Re: 562 Xp auto tune
« Reply #120 on: August 20, 2014, 07:43:38 pm »
what your going to find with either the 562 or the 550 is this , if you run the saw easy it becomes set to that way of work and is lazy , if you limb small wood all the time or cut real small stuff it does the same thing , I cut 1500 apple trees down with my 550 after I used the saw to cut firewood and after cutting those apple trees it became 1 lazy mother , One of my friends needed a saw so I gave it to him and it took about 60 face cord of cutting firewood before it started to run strong again , Pete who cuts firewood bought a new 562 and babied it and hated it but ran my stock 562 and said it was night and day stronger than his and my saw did not have the bog in it like his did , he took his back to the dealer and traded it in on a new 372xt

Offline Jason K

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Re: 562 Xp auto tune
« Reply #121 on: August 20, 2014, 07:57:33 pm »
EHP, How do you run them right so they are not lazy? I am buying Tim's 562xp. I want it to run strong. I will be using a 24inch bar with full chisel chain.

Thanks
Jason

Offline Cut4fun .

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Re: 562 Xp auto tune
« Reply #122 on: August 20, 2014, 07:59:40 pm »
I am buying Tim's 562xp. I want it to run strong. I will be using a 24inch bar with full chisel chain.

Thanks
Jason

You stole that saw. But you already know that.   ;)


Offline Old Iron Logging

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Re: 562 Xp auto tune
« Reply #123 on: August 20, 2014, 08:50:42 pm »
what your going to find with either the 562 or the 550 is this , if you run the saw easy it becomes set to that way of work and is lazy , if you limb small wood all the time or cut real small stuff it does the same thing , I cut 1500 apple trees down with my 550 after I used the saw to cut firewood and after cutting those apple trees it became 1 lazy mother , One of my friends needed a saw so I gave it to him and it took about 60 face cord of cutting firewood before it started to run strong again , Pete who cuts firewood bought a new 562 and babied it and hated it but ran my stock 562 and said it was night and day stronger than his and my saw did not have the bog in it like his did , he took his back to the dealer and traded it in on a new 372xt

Been wondering if the auto tune and CM for that matter worked that way. See a big difference in my 241 and the others we sold.

Offline SawTroll

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Re: 562 Xp auto tune
« Reply #124 on: August 21, 2014, 01:21:33 pm »
I've run a couple 562s' that I wasn't very impressed with, one was ported. So far after 2.5 years I'm still impressed with my 562. Like I said, I don't believe they're all created equal. I would like to try a 665 at some point, but I've never seen one.
I see a large problem with comparing the Solo 665 to the true 60cc saws - it is a much heavier and bulkier saw, so much that it pulls it firmly out of the 60cc class.

Offline KilliansRedLeo

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Re: 562 Xp auto tune
« Reply #125 on: August 21, 2014, 01:34:02 pm »
Jason, do what EHP said, run the snot out of it in big wood from day 1!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline Jason K

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Re: 562 Xp auto tune
« Reply #126 on: August 21, 2014, 03:14:12 pm »
Tim, So you are saying work it hard as I can. For how long and how many tanks before I back off?

Thanks
Jason

Offline aclarke

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Re: 562 Xp auto tune
« Reply #127 on: August 21, 2014, 04:09:57 pm »
I'm trying to figure out why Husqvarna would design a micro processor based tuning package and have it set carburetor and ignition parameters using a cumulative run-time trend based on how the saw was run the last few tanks of fuel. Half-assed engineering if they aren't taking advantage of real time information and making continuous adjustment. 




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Offline KilliansRedLeo

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Re: 562 Xp auto tune
« Reply #128 on: August 21, 2014, 05:05:29 pm »
Unfortunately that may have been the only option open to them since the fast data storage/retrieval capacity of the MP is usually limited, and the processing power of the MP may also be limited in its' ability to process simultaneous data streams in real-time. Whole bunch of computer speak that says they did not have enough compute power or cash to do it a better way. They had to have a known trend on which to make adjustments to because the chip was not powerful enough to figure it out new each and every time the engine was run.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline aclarke

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Re: 562 Xp auto tune
« Reply #129 on: August 21, 2014, 05:20:18 pm »
Tim, did a little reading on the system and from what I understand,  the processor does indeed make continues adjustments during operation AFTER the initial and complete run in has be performed. That run in is crucial to setting baseline tuning, after that the sensors and processor make small tuning changes.  If the prescribed run in isn't done properly, which calls for WOT in wood for X amount of time, the saw stays in the default mode. Seems to me that this may be the issue with the saws that folks are complaining about low power?

 

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