Throttle/speed settings

I believe you can do it by going to the Aircraft folder in the general FS9 folder and select an aircraft, and go to the config file in that particular aircraft folder. Could be wrong though

😉

I will agree with Jon without know anyhting specific about it.In the crafts cfg.file (B737 in the example)i find the followings.

[Reference Speeds]
flaps_up_stall_speed = 142.0 //Knots True (KTAS)
full_flaps_stall_speed = 113.0 //Knots True (KTAS)
cruise_speed = 477.0 //Knots True (KTAS)
max_mach = 0.82
max_indicated_speed = 340 //Red line (KIAS)

I dont know if they are what you are looking for(maybe im off your point),

Try this?

[GeneralEngineData]
engine_type = 5 //0=Piston, 1=Jet, 2=None, 3=Helo-Turbine, 4=Rocket, 5=Turboprop
Engine.0 = -8.3, -4.8, 0.5 //(feet) longitudinal, lateral, vertical distance from reference datum
Engine.1 = -8.3, 4.8, 0.5 //(feet) longitudinal, lateral, vertical distance from reference datum
fuel_flow_scalar = 1.0 //Scalar for fuel flow efficiency
min_throttle_limit = -0.25; //Minimum percent throttle. Generally negative for turbine reverser

[propeller]
thrust_scalar = 1.0 THIS INCREASES THRUST AS A MULTIPLE OF NORMAL THRUST //Propeller thrust scalar
propeller_type = 0 //0=Constant Speed, 1=Fixed Pitch
propeller_diameter = 8.8 //Propeller Diameter, (feet)
propeller_blades = 4 //Number of propeller blades
propeller_moi = 24 //Propeller moment of inertia
beta_max = 45 //Maximum blade pitch angle for constant speed prop, (degrees)
beta_min = 15.2 //Minimum blade pitch angle for constant speed prop, (degrees)
min_gov_rpm = 25520 //Miminum governed RPM
prop_tc = 0.004 //Prop time-constant
gear_reduction_ratio = 17.6 //Propeller gear reduction ratio
fixed_pitch_beta = 0 //Fixed pitch angle of fixed pitch prop, (degrees)
low_speed_theory_limit = 80 //Speed at which low speed theory becomes blended in (feet/second)
prop_sync_available = 1 //Prop synchronization available? 0=FALSE, 1=TRUE
prop_deice_available = 1 //Prop de-icing available? 0=FALSE, 1=TRUE
prop_feathering_available= 1 //Prop feathering available? 0=FALSE, 1=TRUE
prop_auto_feathering_available= 1 //Prop auto-feathering available? 0=FALSE, 1=TRUE
min_rpm_for_feather = 700 //Minimum RPM for prop feathering
beta_feather = 79.3 //Feathering pitch angle (degrees)
power_absorbed_cf = 0.9 //Coefficient of friction for power absorbed by propeller
defeathering_accumulators_available= 0 //Defeathering accumulators available? 0=FALSE, 1=TRUE
prop_reverse_available = 1 //Prop reverse available? 0=FALSE, 1=TRUE
minimum_on_ground_beta = 1.0 //Miminum pitch angle on ground, (degrees)
minimum_reverse_beta = -14.0 //Minimum pitch angle in reverse, (degrees)

[TurbineEngineData]
fuel_flow_gain = 0.011 //Gain on fuel flow
inlet_area = 1.0 //Square Feet, engine nacelle inlet area
rated_N2_rpm = 29920 //RPM, second stage compressor rated value
static_thrust = 158 //Lbs, max rated static thrust at Sea Level

[turboprop_engine]
power_scalar = 1.0 //Scalar on Turboprop power
maximum_torque = 3270 //Maximum torque available (ft-lbs)