diff --git a/api/api.go b/api/api.go
index af80064..978f241 100644
--- a/api/api.go
+++ b/api/api.go
@@ -455,13 +455,15 @@ func StartInstance(w http.ResponseWriter, r *http.Request) {
 	req := struct {
 		Name          string `json:"name"`
 		Configuration int64  `json:"config"`
+		ScriptBefore  string `json:"script_before"`
+		ScriptAfter   string `json:"script_after"`
 	}{}
 
 	if decode(w, r, &req) {
 		return
 	}
 
-	err := instance.StartInstance(req.Name, req.Configuration)
+	err := instance.StartInstance(req.Name, req.Configuration, req.ScriptBefore, req.ScriptAfter)
 
 	if iserror(w, err) {
 		return
diff --git a/instance/mgn.go b/instance/mgn.go
index 5589902..9932f47 100644
--- a/instance/mgn.go
+++ b/instance/mgn.go
@@ -24,9 +24,10 @@ func GetAllInstances() []Instance {
 	return instances
 }
 
-func StartInstance(instanceName string, configuration int64) error {
-	// check input
+func StartInstance(instanceName string, configuration int64, scriptBefore, scriptAfter string) error {
 	instanceName = util.Trim(instanceName)
+	scriptBefore = util.Trim(scriptBefore)
+	scriptAfter = util.Trim(scriptAfter)
 
 	if instanceName == "" {
 		return util.OpError{1, "Instance name must be set"}
@@ -61,10 +62,8 @@ func StartInstance(instanceName string, configuration int64) error {
 		return util.OpError{3, "Error writing configuration"}
 	}
 
-	// force server_cfg and entry_list ini paths
-	cmd := exec.Command(filepath.Join(s.Folder, s.Executable), "-c", iniServerCfg, "-e", iniEntryList)
+	// create log file
 	now := time.Now().Format("20060102_150405")
-
 	logName := now + "_" + int64ToStr(config.Id) + "_" + instanceName + ".log"
 	logfile, err := os.Create(filepath.Join(os.Getenv("ACWEB_INSTANCE_LOGDIR"), logName))
 
@@ -73,17 +72,28 @@ func StartInstance(instanceName string, configuration int64) error {
 		return util.OpError{6, "Error creating log file"}
 	}
 
+	// run script before server start (without process ID)
+	if scriptBefore != "" {
+		runScript(scriptBefore, 0, logfile)
+	}
+
+	// force server_cfg and entry_list ini paths
+	cmd := exec.Command(filepath.Join(s.Folder, s.Executable), "-c", iniServerCfg, "-e", iniEntryList)
 	cmd.Stdout = logfile
 	cmd.Stderr = logfile
-
-	// run acServer from its folder so track and car data will be read for checksum;
-	cmd.Dir = s.Folder
+	cmd.Dir = s.Folder // run acServer from its folder so track and car data will be read for checksum
 
 	if err := cmd.Start(); err != nil {
 		log.WithFields(log.Fields{"err": err}).Error("Error starting instance")
 		return util.OpError{4, "Error starting instance"}
 	}
 
+	// run script after server start (with process ID)
+	if scriptAfter != "" {
+		runScript(scriptAfter, cmd.Process.Pid, logfile)
+	}
+
+	// add instance to list of running instances
 	instance := Instance{cmd.Process.Pid, instanceName, config.Id, cmd, logfile}
 	log.WithFields(log.Fields{"instance": instance}).Debug("Adding new instance")
 	m.Lock()
@@ -103,6 +113,8 @@ func runScript(scriptPath string, processId int, logfile *os.File) {
 
 	if err := cmd.Start(); err != nil {
 		log.WithFields(log.Fields{"err": err, "script_path": scriptPath, "process_id": processId}).Error("Error starting script")
+	} else {
+		log.WithFields(log.Fields{"script_path": scriptPath, "process_id": processId}).Debug("Run script")
 	}
 }
 
diff --git a/public/src/pages/instance.vue b/public/src/pages/instance.vue
index 4f06c56..3614eb8 100644
--- a/public/src/pages/instance.vue
+++ b/public/src/pages/instance.vue
@@ -26,6 +26,22 @@
 									</select>
 								</td>
 							</tr>
+							<tr>
+								<td>Run script/executable before start:</td>
+								<td>
+									<input type="text" name="script_before" class="full-width" v-model="script_before">
+									<br />
+									(full path, or leave empty)
+								</td>
+							</tr>
+							<tr>
+								<td>Run script/executable after start:</td>
+								<td>
+									<input type="text" name="script_after" class="full-width" v-model="script_after">
+									<br />
+									(full path, or leave empty)
+								</td>
+							</tr>
 							<tr>
 								<td></td>
 								<td>
@@ -169,6 +185,8 @@ export default {
 			err: 0,
 			name: '',
 			config: 0,
+			script_before: '',
+			script_after: '',
 			log: '',
 			activeLogFilename: '',
 			showLog: false,
@@ -264,7 +282,14 @@ export default {
 			this.logFile = '';
 		},
 		performStart() {
-			axios.post('/api/instance', {name: this.name, config: this.config})
+			let config = {
+				name: this.name,
+				config: this.config,
+				script_before: this.script_before,
+				script_after: this.script_after
+			};
+			
+			axios.post('/api/instance', config)
 			.then(resp => {
 				if(resp.data.code){
 					console.log(resp.data.code+': '+resp.data.msg);