diff --git a/firmware/config/engines/mazda_miata_vvt.cpp b/firmware/config/engines/mazda_miata_vvt.cpp
index 0afd4caaa4..e6f73206ac 100644
--- a/firmware/config/engines/mazda_miata_vvt.cpp
+++ b/firmware/config/engines/mazda_miata_vvt.cpp
@@ -781,6 +781,8 @@ void setMiataNB2_ProteusEngineConfiguration(DECLARE_CONFIG_PARAMETER_SIGNATURE)
     engineConfiguration->injectionMode = IM_SEQUENTIAL;
 
 
+    engineConfiguration->tachOutputPin = GPIOD_13; // 3O - TACH (PWM7)
+
     engineConfiguration->injectionPins[0] = GPIOD_7;  // BLU  # pin 3/black35
     engineConfiguration->injectionPins[1] = GPIOG_9;  // BLK  # pin 15/black35
     engineConfiguration->injectionPins[2] = GPIOG_10; // GRN  # pin 4/black35
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 6a869da56c..83ecd6a153 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -1055,7 +1055,7 @@ custom maf_sensor_type_e 4 bits, S32, @OFFSET@, [0:1], @@maf_sensor_type_e_enum@
 	bit canWriteEnabled;enable can_write/disable can_write
 	bit useLinearIatSensor
 	bit useFSIO16ForTimingAdjustment;+See fsioTimingAdjustment
-	bit tachPulseDurationAsDutyCycle;+Treat milliseconds value as percent value, i.e. 50ms would become 50%
+	bit tachPulseDurationAsDutyCycle;+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.
 	bit invertSecondaryTriggerSignal;+This setting flips the signal from the secondary engine speed sensor.