diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 7a7054cecc..581633aa11 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -1107,7 +1107,7 @@ end_struct
 	bit canReadEnabled;enable can_read/disable can_read
 	bit canWriteEnabled;enable can_write/disable can_write
 	bit useLinearIatSensor
-	bit useFSIO16ForTimingAdjustment;+See fsioTimingAdjustment
+	bit unusedBitWasHere16
 	bit tachPulseDurationAsDutyCycle,"Duty cycle","Constant time";+Treat milliseconds value as duty cycle value, i.e. 0.5ms would become 50%
 	bit isAlternatorControlEnabled;+This enables smart alternator control and activates the extra alternator settings.
 	bit invertPrimaryTriggerSignal;+This setting flips the signal from the primary engine speed sensor.
@@ -1118,11 +1118,11 @@ bit cutSparkOnHardLimit,"yes","no"
 bit launchFuelCutEnable
 bit launchSparkCutEnable;+This is the Cut Mode normally used
 bit hasFrequencyReportingMapSensor
-	bit useFSIO8ForServo1
-	bit useFSIO9ForServo2
-	bit useFSIO10ForServo3
-	bit useFSIO11ForServo4
-	bit useFSIO12ForServo5
+	bit unusedBitWasHere1
+	bit unusedBitWasHere2
+	bit unusedBitWasHere3
+	bit unusedBitWasHere4
+	bit unusedBitWasHere5
 bit unusedBitHere1
 bit useFSIO5ForCriticalIssueEngineStop;Sometimes we just have to shut the engine down. Use carefully!
 bit useFSIO4ForSeriousEngineWarning;Sometimes we have to miss injection on purpose to attract driver's attention
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index 8d9d94ff3f..db880226b3 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -3305,25 +3305,9 @@ cmd_set_engine_type_default					= "@@TS_IO_TEST_COMMAND_char@@\x00\x31\x00\x00"
 
 		field = "use FSIO #6 for rev limiter", useFSIO6ForRevLimiter
 		field = "#6",									fsioFormulas6
-
 		field = "#7",									fsioFormulas7
-
-		field = "use FSIO #8 for servo #1",	useFSIO8ForServo1
 		field = "#8",									fsioFormulas8
-		field = "use FSIO #9 for servo #2",	useFSIO9ForServo2
-		field = "#9",									fsioFormulas9
-		field = "use FSIO #10 for servo #3",	useFSIO10ForServo3
-		field = "#10",									fsioFormulas10
-		field = "use FSIO #11 for servo #4",	useFSIO11ForServo4
-		field = "#11",									fsioFormulas11
-		field = "use FSIO #12 for servo #5",	useFSIO12ForServo5
-		field = "#12",									fsioFormulas12
-		field = "#13",									fsioFormulas13
-		field = "#14",									fsioFormulas14
-		field = "#15",									fsioFormulas15
-		field = "use FSIO #16 for timing adjustment",	useFSIO16ForTimingAdjustment
-		field = "#16",									fsioFormulas16
-		
+
 	dialog = fsioInputsDialog, "FSIO inputs"
 		field = "ADC #1",								fsioAdc1
 		field = "ADC #2",								fsioAdc2