diff --git a/conf/airframes/booz2.xml b/conf/airframes/booz2.xml
index ec3e445d5f..6864611504 100644
--- a/conf/airframes/booz2.xml
+++ b/conf/airframes/booz2.xml
@@ -78,8 +78,8 @@
     <define name="ACCEL_Z_NEUTRAL" value="32768"/>
 
     <define name="ACCEL_X_SENS" value="( 1250.)"/>
-    <define name="ACCEL_Y_SENS" value="(-1250.)"/>
-    <define name="ACCEL_Z_SENS" value="(-1250.)"/>
+    <define name="ACCEL_Y_SENS" value="( 1250.)"/>
+    <define name="ACCEL_Z_SENS" value="( 1250.)"/>
 
 
     <define name="MAG_X_CHAN" value="0"/>
diff --git a/sw/simulator/booz_sensors_model_accel.c b/sw/simulator/booz_sensors_model_accel.c
index f4e8e4f11b..ca6ae2f88f 100644
--- a/sw/simulator/booz_sensors_model_accel.c
+++ b/sw/simulator/booz_sensors_model_accel.c
@@ -91,11 +91,11 @@ void booz_sensors_model_accel_run( double time, MAT* dcm ) {
 	     accel_body->ve[AXIS_X], 
 	     accel_body->ve[AXIS_Y], 
 	     accel_body->ve[AXIS_Z]);
-#endif
 
  
   accel_body = mv_mlt(dcm, g_inert, accel_body);
   accel_body = sv_mlt(-1., accel_body, accel_body);
+#endif
 
   //  printf(" accel_body ~ %f %f %f\n", accel_body->ve[AXIS_X], accel_body->ve[AXIS_Y], accel_body->ve[AXIS_Z]);
 #endif
diff --git a/sw/simulator/booz_sensors_model_params_booz2.h b/sw/simulator/booz_sensors_model_params_booz2.h
index 92fc47479f..df718290c0 100644
--- a/sw/simulator/booz_sensors_model_params_booz2.h
+++ b/sw/simulator/booz_sensors_model_params_booz2.h
@@ -31,15 +31,20 @@
 #define BSM_ACCEL_RESOLUTION      (65536)
 /* ms-2 */
 #define BSM_ACCEL_SENSITIVITY_XX  1250.
-#define BSM_ACCEL_SENSITIVITY_YY -1250.
-#define BSM_ACCEL_SENSITIVITY_ZZ -1250.
+#define BSM_ACCEL_SENSITIVITY_YY  1250.
+#define BSM_ACCEL_SENSITIVITY_ZZ  1250.
 #define BSM_ACCEL_NEUTRAL_X       32768
 #define BSM_ACCEL_NEUTRAL_Y       32768
 #define BSM_ACCEL_NEUTRAL_Z       32768
 /* m2s-4 */
-#define BSM_ACCEL_NOISE_STD_DEV_X 0
-#define BSM_ACCEL_NOISE_STD_DEV_Y 0
-#define BSM_ACCEL_NOISE_STD_DEV_Z 0
+//#define BSM_ACCEL_NOISE_STD_DEV_X 0
+//#define BSM_ACCEL_NOISE_STD_DEV_Y 0
+//#define BSM_ACCEL_NOISE_STD_DEV_Z 0
+
+#define BSM_ACCEL_NOISE_STD_DEV_X 5e-1
+#define BSM_ACCEL_NOISE_STD_DEV_Y 5e-1
+#define BSM_ACCEL_NOISE_STD_DEV_Z 5e-1
+
 /* ms-2 */
 #define BSM_ACCEL_BIAS_X          0
 #define BSM_ACCEL_BIAS_Y          0