The LOP button is designed to be used when you lean the engine to LOP. This advances the timing (usually 3-5 degrees) and picks up some of the power lost when running lean of peak due to the slower burn rate of the mixture.
Usually see 3-6 knots come back over fixed mag timing, depending on airframe and how far LOP you are.
The amount of advance for LOP is user programmable as are the basic RPM and MAP timing curves. In fact, almost every parameter right down to cranking retard and coil charge times can be changed.
This is the "Last Word" in aircraft EI systems where you want full control of your timing and not a canned curve like most other EIs offer.
Usually see 3-6 knots come back over fixed mag timing, depending on airframe and how far LOP you are.
The amount of advance for LOP is user programmable as are the basic RPM and MAP timing curves. In fact, almost every parameter right down to cranking retard and coil charge times can be changed.
This is the "Last Word" in aircraft EI systems where you want full control of your timing and not a canned curve like most other EIs offer.
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