I am in the market for a big stihl saw in the 440 to 660 range ($$$) that will handle a 30"+ bar with ease.
In my research I have discovered stihl is offering an optional engine management system that automatically adjust AF ratio for all conditions, temperatures and fuel quality. from stihls site:
"The STIHL M-Tronic™ engine management system electronically controls the ignition timing and fuel metering in any operating condition, factoring in altitude and fuel quality. This system provides professionals with optimum performance, whether you are just starting to work or resuming after a break.
Just Pull and Start
Thanks to the simplified warm start procedure, there is only one starting position on the combination lever.
No Manual Carburetor Settings
The STIHL M-Tronic system electronically adjusts the fuel/air mixture in the carburetor for all operating conditions: start, idle, partial and full load. With the STIHL M-Tronic system always taking external conditions into account, you save time and money.
Continuous Engine Performance
The STIHL M-Tronic continuously monitors the operating conditions of your chain saw or brushcutter, calculating engine speed to continuously meter fuel. You save on fuel costs while experiencing optimum engine performance.
Excellent Acceleration
Thanks to the electronic ignition timing and fuel metering, you can quickly accelerate – even after a cold start.
Memory Function
From the second you start it, the built-in intelligence of the STIHL M-Tronic engine management system begins saving you time – and money! STIHL M-Tronic remembers your last setting under the same external conditions and resets to it every time once the engine reaches full power. "
http://www.stihlusa.com/products/technology/stihl-m-tronic/
THis sounds incredibly high tech, but the simplest in me wouldn't mind just a regular carb, however, this sounds like the bees knees for efficiency and longevity if the system is bullet proof and wont require a $200 ECU replacement a few years down the road.
Thoughts?
In my research I have discovered stihl is offering an optional engine management system that automatically adjust AF ratio for all conditions, temperatures and fuel quality. from stihls site:
"The STIHL M-Tronic™ engine management system electronically controls the ignition timing and fuel metering in any operating condition, factoring in altitude and fuel quality. This system provides professionals with optimum performance, whether you are just starting to work or resuming after a break.
Just Pull and Start
Thanks to the simplified warm start procedure, there is only one starting position on the combination lever.
No Manual Carburetor Settings
The STIHL M-Tronic system electronically adjusts the fuel/air mixture in the carburetor for all operating conditions: start, idle, partial and full load. With the STIHL M-Tronic system always taking external conditions into account, you save time and money.
Continuous Engine Performance
The STIHL M-Tronic continuously monitors the operating conditions of your chain saw or brushcutter, calculating engine speed to continuously meter fuel. You save on fuel costs while experiencing optimum engine performance.
Excellent Acceleration
Thanks to the electronic ignition timing and fuel metering, you can quickly accelerate – even after a cold start.
Memory Function
From the second you start it, the built-in intelligence of the STIHL M-Tronic engine management system begins saving you time – and money! STIHL M-Tronic remembers your last setting under the same external conditions and resets to it every time once the engine reaches full power. "
http://www.stihlusa.com/products/technology/stihl-m-tronic/
THis sounds incredibly high tech, but the simplest in me wouldn't mind just a regular carb, however, this sounds like the bees knees for efficiency and longevity if the system is bullet proof and wont require a $200 ECU replacement a few years down the road.
Thoughts?