diff --git a/js/msp.js b/js/msp.js
index 06270ecd..863042dc 100755
--- a/js/msp.js
+++ b/js/msp.js
@@ -1439,12 +1439,19 @@ MSP.crunch = function (code) {
         case MSP_codes.MSP_SET_ADVANCED_TUNING:
             buffer.push16(ADVANCED_TUNING.rollPitchItermIgnoreRate)
               .push16(ADVANCED_TUNING.yawItermIgnoreRate)
-              .push16(ADVANCED_TUNING.yaw_p_limit)
-              .push8(ADVANCED_TUNING.deltaMethod)
-              .push8(ADVANCED_TUNING.vbatPidCompensation);
+              .push16(ADVANCED_TUNING.yaw_p_limit);
+            if (CONFIG.flightControllerIdentifier == "BTFL" && semver.gte(CONFIG.flightControllerVersion, "2.8.2")) {
+              buffer.push(ADVANCED_TUNING.deltaMethod)
+              buffer.push(ADVANCED_TUNING.vbatPidCompensation);
+            }
             break;
         case MSP_codes.MSP_SET_SPECIAL_PARAMETERS:
             buffer.push(Math.round(SPECIAL_PARAMETERS.RC_RATE_YAW * 100));
+            if (CONFIG.flightControllerIdentifier == "BTFL" && semver.gte(CONFIG.flightControllerVersion, "2.8.2")) {
+                buffer.push(SPECIAL_PARAMETERS.airModeActivateThreshold);
+                buffer.push(SPECIAL_PARAMETERS.rcSmoothInterval);
+                buffer.push(SPECIAL_PARAMETERS.escDesyncProtection);
+            }
             break;
         default:
             return false;
diff --git a/tabs/pid_tuning.js b/tabs/pid_tuning.js
index 51b9901b..e06d3fce 100755
--- a/tabs/pid_tuning.js
+++ b/tabs/pid_tuning.js
@@ -185,7 +185,11 @@ TABS.pid_tuning.initialize = function (callback) {
         $('.pid_filter .gyro').val(FILTER_CONFIG.gyro_soft_lpf_hz);
         $('.pid_filter .dterm').val(FILTER_CONFIG.dterm_lpf_hz);
         $('.pid_filter .yaw').val(FILTER_CONFIG.yaw_lpf_hz);
-        
+
+        if (CONFIG.flightControllerIdentifier == "BTFL" && semver.lt(CONFIG.flightControllerVersion, "2.8.1")) {
+            $('.pid_filter').hide();
+            $('.pid_tuning input[name="rc_rate_yaw"]').hide();
+        }
     }
 
     function form_to_pid_and_rc() {
@@ -424,9 +428,13 @@ TABS.pid_tuning.initialize = function (callback) {
         });
 
         $('.delta select').val(ADVANCED_TUNING.deltaMethod).change(function() {
-          ADVANCED_TUNING.deltaMethod = $(this).val();
+            ADVANCED_TUNING.deltaMethod = $(this).val();
         });
 
+        if (CONFIG.flightControllerIdentifier == "BTFL" && semver.lt(CONFIG.flightControllerVersion, "2.8.2")) {
+            $('.delta').hide();
+        }
+
         // update == save.
         $('a.update').click(function () {
             form_to_pid_and_rc();
@@ -442,13 +450,17 @@ TABS.pid_tuning.initialize = function (callback) {
                 if (TABS.pid_tuning.controllerChanged) { return; }
                 MSP.promise(MSP_codes.MSP_SET_PID, MSP.crunch(MSP_codes.MSP_SET_PID)).then(function() {
                     if (TABS.pid_tuning.controllerChanged) { Promise.reject('pid controller changed'); }
-                    return MSP.promise(MSP_codes.MSP_SET_SPECIAL_PARAMETERS, MSP.crunch(MSP_codes.MSP_SET_SPECIAL_PARAMETERS));
+                    if (CONFIG.flightControllerIdentifier == "BTFL" && semver.gte(CONFIG.flightControllerVersion, "2.8.1")) {
+                        return MSP.promise(MSP_codes.MSP_SET_SPECIAL_PARAMETERS, MSP.crunch(MSP_codes.MSP_SET_SPECIAL_PARAMETERS));
+                    }
                 }).then(function() {
                     if (TABS.pid_tuning.controllerChanged) { Promise.reject('pid controller changed'); }
                     return MSP.promise(MSP_codes.MSP_SET_ADVANCED_TUNING, MSP.crunch(MSP_codes.MSP_SET_ADVANCED_TUNING));
                 }).then(function() {
                     if (TABS.pid_tuning.controllerChanged) { Promise.reject('pid controller changed'); }
-                    return MSP.promise(MSP_codes.MSP_SET_FILTER_CONFIG, MSP.crunch(MSP_codes.MSP_SET_FILTER_CONFIG));
+                    if (CONFIG.flightControllerIdentifier == "BTFL" && semver.gte(CONFIG.flightControllerVersion, "2.8.1")) {
+                        return MSP.promise(MSP_codes.MSP_SET_FILTER_CONFIG, MSP.crunch(MSP_codes.MSP_SET_FILTER_CONFIG));
+                    }
                 }).then(function() {
                     return MSP.promise(MSP_codes.MSP_SET_RC_TUNING, MSP.crunch(MSP_codes.MSP_SET_RC_TUNING));
                 }).then(function() {