Husqvarna 550 Mk 2 or older MS 261-CM

[Echo]

What ever you want to think gary112

[gary112]

2 minutes ago, Echo said:

What ever you want to think gary112

[Stubby]

1 hour ago, Echo said:

Autotune will adjust the amount of fuel to the saw, this makes up for any small inconsistencies such as 40:1, there are plenty of people who prefer this as opposed to the 50:1.

I don't now if A/T can tell if you are running 40:1 or 50:1  . What it will do is add or subtract air to the mix to suit ambient conditions , partially blocked air filters etc .   I call the mix the fuel .  That is oil + petrol/Aspen

Edited April 4, 2019 by Stubby

[Echo]

If AT or MT could not adjust for different quality fuels, then it would be useless.

Thats all it is, a different amount of oil alters how the fuel burns, At or MT can indeed cope with this situation, randy evans uses nothing but 40:1 in all the saws he ports, that includes AT and MT systems, and thats good enough for me.

[Stubby]

2 minutes ago, Echo said:

If AT or MT could not adjust for different quality fuels, then it would be useless.

Thats all it is, a different amount of oil alters how the fuel burns, At or MT can indeed cope with this situation, randy evans uses nothing but 40:1 in all the saws he ports, that includes AT and MT systems, and thats good enough for me.

Both 40:1 and 50:1 can be the same quality , good or bad .  Are you saying it does not adjust the amount of air for a given situation ?

[Echo]

Am not talking about bad fuel, am talking only about 40:1 versus 50 in a saw that is capable of managing fuel in relation to rpm temperature and a few other parameters.

Am saying these systems can cope with the above.

[Stubby]

Just now, Echo said:

Am not talking about bad fuel, am talking only about 40:1 versus 50 in a saw that is capable of managing fuel in relation to rpm temperature and a few other parameters.

Am saying these systems can cope with the above.

You said " quality of fuel "  You miss led me .   I am saying it adjusts the amount of air to the mix ( 40:1 if you like ) to suit ambient conditions , altitude , temp , partially blocked air filter etc . 

[carlos]

10 minutes ago, Echo said:

If AT or MT could not adjust for different quality fuels, then it would be useless.

Thats all it is, a different amount of oil alters how the fuel burns, At or MT can indeed cope with this situation, randy evans uses nothing but 40:1 in all the saws he ports, that includes AT and MT systems, and thats good enough for me.

Randy evans..... now thats a cool name

[Echo]

Just now, carlos said:

Randy evans..... now thats a cool name

You know him carlos

[carlos]

1 minute ago, Echo said:

You know him carlos

no just thought it a funny name