I reworked ALL engines available in GTL from scratch. All you need is Notepad+. Just open an existing .eng-file and replace the old data with the new.
Hint: @ 1000 RPM, u have to give more Torque when your car does not drive qualifying when driven by the AI. Holy shit, it took me 6 months to find that out.
Example :
//Ford Capri RS
RPMTorque=( 0 , -58.40 , -58.00 )
RPMTorque=( 250 , -33.00 , -9.00 )
RPMTorque=( 500 , -13.70 , 75.00 )
RPMTorque=( 750 , -22.00 , 100.00 )
RPMTorque=( 1000 , -30.40 , 200.00 )
RPMTorque=( 1250 , -40.00 , 210.00 )
RPMTorque=( 1500 , -50.00 , 220.00 )
RPMTorque=( 1750 , -60.00 , 250.00 )
RPMTorque=( 2000 , -70.00 , 275.00 )
RPMTorque=( 2250 , -80.00 , 300.00 )
RPMTorque=( 2500 , -90.00 , 325.00 )
RPMTorque=( 2750 , -100.00 , 350.00 )
RPMTorque=( 3000 , -110.00 , 360.00 )
RPMTorque=( 3250 , -120.00 , 370.00 )
RPMTorque=( 3500 , -130.00 , 380.00 )
RPMTorque=( 3750 , -140.00 , 390.00 )
RPMTorque=( 4000 , -150.00 , 400.00 )
RPMTorque=( 4250 , -160.00 , 410.00 )
RPMTorque=( 4500 , -170.00 , 411.00 )
RPMTorque=( 4750 , -180.00 , 412.00 )
RPMTorque=( 5000 , -190.00 , 413.00 )
RPMTorque=( 5250 , -200.00 , 414.00 )
RPMTorque=( 5500 , -210.00 , 415.00 )
RPMTorque=( 5750 , -220.00 , 416.00 )
RPMTorque=( 6000 , -230.00 , 417.00 )
RPMTorque=( 6250 , -240.00 , 418.00 )
RPMTorque=( 6500 , -250.00 , 419.00 )
RPMTorque=( 6750 , -260.00 , 420.00 )
RPMTorque=( 7000 , -270.00 , 421.00 )
RPMTorque=( 7250 , -280.00 , 422.00 )
RPMTorque=( 7500 , -290.00 , 423.00 )
RPMTorque=( 7750 , -300.00 , 410.00 )
RPMTorque=( 8000 , -310.00 , 395.00 )
RPMTorque=( 8250 , -320.00 , 350.00 )
RPMTorque=( 8500 , -330.00 , 300.00 )
RPMTorque=( 8750 , -340.00 , 200.00 )
RPMTorque=( 9000 , -350.00 , 100.00 )
FuelConsumption=3.95e-5
FuelEstimate=1.25
EngineInertia=0.200
IdleThrottle=1.0
IdleRPMLogic=(1000.0, 1100.0)
LaunchEfficiency=0.850
LaunchRPMLogic=(7800.0, 7900.0)
RevLimitRange=(8000.0, 0.0, 0)
RevLimitSetting=0
RevLimitLogic=100.0
EngineMapRange=(0, 1, 5)
EngineMapSetting=2
EngineBrakingMapRange=(0.0,0.00077, 10)
EngineBrakingMapSetting=4
OptimumOilTemp=95
CombustionHeat=40
EngineSpeedHeat=12.000e-004
OilMinimumCooling=7.50e-003
OilWaterHeatTransfer=(3.962e-001,7.925e-005)
WaterMinimumCooling=3.962e-003
RadiatorCooling=(1.592e-004, 10.039e-005)
LifetimeEngineRPM=(8200.0, 200)
LifetimeOilTemp=(110.0, 3.0)
LifetimeAvg=30000
LifetimeVar=1000
EngineEmission=(0.0, 0.55, -2.75)
EngineSound=(0.350, 0.50, -2.400)
OnboardStarter=1
StarterTiming=(1.4, 0.4, 1.5)