diff --git a/src/monocoque/devices/hapticeffect.c b/src/monocoque/devices/hapticeffect.c
index 72db458..919e95e 100644
--- a/src/monocoque/devices/hapticeffect.c
+++ b/src/monocoque/devices/hapticeffect.c
@@ -42,7 +42,7 @@ void getTyreDiameter(SimData* simdata)
 }
 
 
-int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold)
+int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int* configcheck)
 {
     int play = 0;
     double wheelslip[4];
@@ -60,7 +60,12 @@ int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold)
 
             if(hasTyreDiameter(simdata)==false)
             {
+                // check for saved tyre diameter in config file
+                // if not saved version exists get tyre diameter and save it
+                // use config check variable to track if the config check has been performed
+                // avoid many opens of the same file
                 getTyreDiameter(simdata);
+                *configcheck = 1;
             }
             if(hasTyreDiameter(simdata)==true)
             {
@@ -152,6 +157,39 @@ int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold)
 
             break;
         case (EFFECT_ABSBRAKES):
+            threshold = simdata->abs + threshold;
+            if (tyre == FRONTLEFT || tyre == FRONTS || tyre == ALLFOUR)
+            {
+                if(wheelslip[0] > threshold)
+                {
+                    play++;
+                }
+            }
+            if (tyre == FRONTRIGHT || tyre == FRONTS || tyre == ALLFOUR)
+            {
+                if(wheelslip[1] > threshold)
+                {
+                    play++;
+                }
+            }
+            if (tyre == REARLEFT || tyre == REARS || tyre == ALLFOUR)
+            {
+                if(wheelslip[2] > threshold)
+                {
+                    play++;
+                }
+            }
+            if (tyre == REARRIGHT || tyre == REARS || tyre == ALLFOUR)
+            {
+                if(wheelslip[3] > threshold)
+                {
+                    play++;
+                }
+            }
+            if(simdata->abs <= 0)
+            {
+                play = 0;
+            }
             break;
     }
     
diff --git a/src/monocoque/devices/hapticeffect.h b/src/monocoque/devices/hapticeffect.h
index 2f7150e..ea66c38 100644
--- a/src/monocoque/devices/hapticeffect.h
+++ b/src/monocoque/devices/hapticeffect.h
@@ -3,6 +3,6 @@
 
 #include "../simulatorapi/simapi/simapi/simdata.h"
 
-int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold);
+int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int* configcheck);
 
 #endif
diff --git a/src/monocoque/devices/simdevice.c b/src/monocoque/devices/simdevice.c
index a4d57e7..cc37dff 100644
--- a/src/monocoque/devices/simdevice.c
+++ b/src/monocoque/devices/simdevice.c
@@ -41,6 +41,7 @@ int devinit(SimDevice* simdevices, int numdevices, DeviceSettings* ds)
                 //simdevices[j].initialized = true;
                 simdevices[j].type = SIMDEV_USB;
                 simdevices[j].tyre = ds[j].tyre;
+                simdevices[j].configcheck = 0;
                 devices++;
             }
             else
@@ -59,6 +60,7 @@ int devinit(SimDevice* simdevices, int numdevices, DeviceSettings* ds)
                 simdevices[j].initialized = true;
                 simdevices[j].type = SIMDEV_SOUND;
                 simdevices[j].tyre = ds[j].tyre;
+                simdevices[j].configcheck = 0;
                 devices++;
             }
             else
diff --git a/src/monocoque/devices/simdevice.h b/src/monocoque/devices/simdevice.h
index 1b1ca63..dacc634 100644
--- a/src/monocoque/devices/simdevice.h
+++ b/src/monocoque/devices/simdevice.h
@@ -23,7 +23,9 @@ struct SimDevice
     int id;
     bool initialized;
     DeviceType type;
+    // possibly move these to a haptic effect struct
     MonocoqueTyreIdentifier tyre;
+    int configcheck;
 };
 
 typedef struct {
@@ -94,6 +96,7 @@ typedef struct
     SimDevice m;
     int id;
     SoundType type;
+    int configcheck;
     VibrationEffectType effecttype;
     double slipthreshold;
     SoundData sounddata;
diff --git a/src/monocoque/devices/sounddevice.c b/src/monocoque/devices/sounddevice.c
index a132c7e..2febd7b 100644
--- a/src/monocoque/devices/sounddevice.c
+++ b/src/monocoque/devices/sounddevice.c
@@ -42,7 +42,7 @@ int sounddev_tyreslip_update(SimDevice* this, SimData* simdata)
 {
     SoundDevice* sounddevice = (void *) this->derived;
 
-    int play = slipeffect(simdata, sounddevice->effecttype, this->tyre, sounddevice->slipthreshold);
+    int play = slipeffect(simdata, sounddevice->effecttype, this->tyre, sounddevice->slipthreshold, &this->configcheck);
 
     if (play > 0)
     {
@@ -60,7 +60,7 @@ int sounddev_tyrelock_update(SimDevice* this, SimData* simdata)
 {
     SoundDevice* sounddevice = (void *) this->derived;
 
-    int play = slipeffect(simdata, sounddevice->effecttype, this->tyre, sounddevice->slipthreshold);
+    int play = slipeffect(simdata, sounddevice->effecttype, this->tyre, sounddevice->slipthreshold, &this->configcheck);
 
     if (play > 0)
     {
diff --git a/src/monocoque/devices/sounddevice.h b/src/monocoque/devices/sounddevice.h
index 0f28aff..00eb949 100644
--- a/src/monocoque/devices/sounddevice.h
+++ b/src/monocoque/devices/sounddevice.h
@@ -20,7 +20,6 @@ typedef struct
     int last_gear;
     int volume;
     int frequency;
-
     double duration;
     int curr_frequency;
     double curr_duration;
diff --git a/src/monocoque/devices/usbdevice.c b/src/monocoque/devices/usbdevice.c
index 5b285f3..14ddcbd 100644
--- a/src/monocoque/devices/usbdevice.c
+++ b/src/monocoque/devices/usbdevice.c
@@ -20,7 +20,7 @@ int usbdev_update(SimDevice* this, SimData* simdata)
             tachdev_update(&usbdevice->u.tachdevice, simdata);
             break;
         case USBDEV_GENERICHAPTIC :
-            usbhapticdev_update(&usbdevice->u.hapticdevice, simdata);
+            usbhapticdev_update(&usbdevice->u.hapticdevice, simdata, this->tyre, &this->configcheck);
             break;
     }
 
diff --git a/src/monocoque/devices/usbhapticdevice.c b/src/monocoque/devices/usbhapticdevice.c
index d368a48..62640a2 100644
--- a/src/monocoque/devices/usbhapticdevice.c
+++ b/src/monocoque/devices/usbhapticdevice.c
@@ -11,10 +11,10 @@
 #include "../../slog/slog.h"
 
 
-int usbhapticdev_update(USBGenericHapticDevice* usbhapticdevice, SimData* simdata)
+int usbhapticdev_update(USBGenericHapticDevice* usbhapticdevice, SimData* simdata, int tyre, int* configcheck)
 {
 
-    int play = slipeffect(simdata, usbhapticdevice->effecttype, usbhapticdevice->tyre, usbhapticdevice->threshold);
+    int play = slipeffect(simdata, usbhapticdevice->effecttype, tyre, usbhapticdevice->threshold, configcheck);
     
     if (play != usbhapticdevice->state)
     {
@@ -45,7 +45,6 @@ int usbhapticdev_init(USBGenericHapticDevice* usbhapticdevice, DeviceSettings* d
     usbhapticdevice->value0 = ds->usbdevsettings.value0;
     usbhapticdevice->value1 = ds->usbdevsettings.value1;
     usbhapticdevice->state = usbhapticdevice->value0;
-    usbhapticdevice->tyre = ds->tyre;
     usbhapticdevice->effecttype = ds->effect_type;
     usbhapticdevice->threshold = ds->threshold;
 
@@ -57,6 +56,10 @@ int usbhapticdev_init(USBGenericHapticDevice* usbhapticdevice, DeviceSettings* d
     {
         usbhapticdevice->effecttype = EFFECT_TYRELOCK;
     }
+    if(ds->effect_type == EFFECT_ABSBRAKES)
+    {
+        usbhapticdevice->effecttype = EFFECT_ABSBRAKES;
+    }
 
     slogi("initializing standalone usb haptic device...");
     // detection of usb device model
@@ -70,14 +73,5 @@ int usbhapticdev_init(USBGenericHapticDevice* usbhapticdevice, DeviceSettings* d
         return error;
     }
 
-    if(ds->effect_type == EFFECT_TYRESLIP)
-    {
-        usbhapticdevice->effecttype = EFFECT_TYRESLIP;
-    }
-    if(ds->effect_type == EFFECT_TYRELOCK)
-    {
-        usbhapticdevice->effecttype = EFFECT_TYRELOCK;
-    }
-
     return error;
 }
diff --git a/src/monocoque/devices/usbhapticdevice.h b/src/monocoque/devices/usbhapticdevice.h
index eb2cfc8..a11e785 100644
--- a/src/monocoque/devices/usbhapticdevice.h
+++ b/src/monocoque/devices/usbhapticdevice.h
@@ -22,14 +22,13 @@ typedef struct
     int value0;
     int value1;
     VibrationEffectType effecttype;
-    MonocoqueTyreIdentifier tyre;
     FILE* handle;
     char* dev;
 }
 USBGenericHapticDevice;
 
 
-int usbhapticdev_update(USBGenericHapticDevice* hapticdevice, SimData* simdata);
+int usbhapticdev_update(USBGenericHapticDevice* hapticdevice, SimData* simdata, int tyre, int* configcheck);
 int usbhapticdev_init(USBGenericHapticDevice* hapticdevice, DeviceSettings* ds);
 int usbhapticdev_free(USBGenericHapticDevice* hapticdevice);