diff --git a/src/drivers/simplix/src/unitdriver.cpp b/src/drivers/simplix/src/unitdriver.cpp
index 4f72f3927..0164af929 100644
--- a/src/drivers/simplix/src/unitdriver.cpp
+++ b/src/drivers/simplix/src/unitdriver.cpp
@@ -2396,7 +2396,7 @@ void TDriver::InitCa()
   	  if (index == 0)
         FrontWingArea = FrontWingArea * sin(FrontWingAngle - wing->AoAatZRad);
 	  else
-       RearWingArea = RearWingArea * sin(RearWingAngle - wing->AoAatZRad);
+        RearWingArea = RearWingArea * sin(RearWingAngle - wing->AoAatZRad);
 
 	}
   }
diff --git a/src/drivers/simplix/src/unitmain.cpp b/src/drivers/simplix/src/unitmain.cpp
index 92c0adff3..752e04cb7 100644
--- a/src/drivers/simplix/src/unitmain.cpp
+++ b/src/drivers/simplix/src/unitmain.cpp
@@ -803,7 +803,7 @@ static int InitFuncPt(int Index, void *Pt)
     cInstances[Index-IndexOffset].cRobot->CalcHairpinFoo = &TDriver::CalcHairpin_simplix;
     cInstances[Index-IndexOffset].cRobot->ScaleSide(0.95f,0.95f);
     cInstances[Index-IndexOffset].cRobot->SideBorderOuter(0.00f);
-    //cInstances[Index-IndexOffset].cRobot->UseFilterAccel();
+    cInstances[Index-IndexOffset].cRobot->UseFilterAccel();
   }
   else if (cRobotType == RTYPE_SIMPLIX_LS1)
   {
diff --git a/src/modules/simu/simuv4/aero.cpp b/src/modules/simu/simuv4/aero.cpp
index aa588a4c0..49324ae2d 100644
--- a/src/modules/simu/simuv4/aero.cpp
+++ b/src/modules/simu/simuv4/aero.cpp
@@ -122,7 +122,7 @@ tdble CliftFromAoA(tWing* wing)
 		//fprintf(stderr,"a: %g\n",wing->a);
 		double s = sin(wing->a/180.0*PI);
 		//fprintf(stderr,"s: %g\n",s);
-		return (tdble)((s * s * (wing->CliftMax + wing->d) - wing->d) * wing->Kx);
+		return (tdble)(s * s * (wing->CliftMax + wing->d) - wing->d);
 	}
 	else
 	{
@@ -224,7 +224,7 @@ SimWingConfig(tCar *car, int index)
 	}
 	else /* if (wing->WingType == 1) */
 	{
-        wing->Kz = CliftFromAoA(wing);
+        wing->Kz = CliftFromAoA(wing) * wing->Kx;
 		fprintf(stderr,"Kz: %g Kx: %g\n",wing->Kz,wing->Kx);
 
 		if (index == 0)
@@ -297,7 +297,8 @@ SimWingUpdate(tCar *car, int index, tSituation* s)
 		else // if (wing->WingType == 1)
 		{
 			wing->forces.x = (tdble) (wing->Kx * vt2 * (1.0f + (tdble)car->dammage / 10000.0) * MAX(fabs(sin(aoa - wing->AoAatZRad)), 0.02));
-			wing->forces.z = (tdble) MIN(0.0,vt2 * CliftFromAoA(wing));
+			wing->forces.z = (tdble) MIN(0.0,wing->Kx* vt2 * CliftFromAoA(wing));
+			// fprintf(stderr,"%d fz: %g (%g)\n",index,wing->forces.z,CliftFromAoA(wing));
 		}
 	} 
 	else