diff --git a/firmware/controllers/actuators/fan_control.cpp b/firmware/controllers/actuators/fan_control.cpp
index f8e51552ed..d3a278cfdf 100644
--- a/firmware/controllers/actuators/fan_control.cpp
+++ b/firmware/controllers/actuators/fan_control.cpp
@@ -34,5 +34,5 @@ void updateFans(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 #endif
 
 	fanControl(enginePins.fanRelay, CONFIG(fanOnTemperature), CONFIG(fanOffTemperature), CONFIG(enableFan1WithAc) PASS_ENGINE_PARAMETER_SUFFIX);
-	//fanControl(enginePins.fanRelay2, CONFIG(fan2OnTemperature), CONFIG(fan2OffTemperature), CONFIG(enableFan2WithAc) PASS_ENGINE_PARAMETER_SUFFIX);
+	fanControl(enginePins.fanRelay2, CONFIG(fan2OnTemperature), CONFIG(fan2OffTemperature), CONFIG(enableFan2WithAc) PASS_ENGINE_PARAMETER_SUFFIX);
 }
diff --git a/firmware/controllers/algo/defaults/default_base_engine.cpp b/firmware/controllers/algo/defaults/default_base_engine.cpp
index b89949c117..372c4d4a3f 100644
--- a/firmware/controllers/algo/defaults/default_base_engine.cpp
+++ b/firmware/controllers/algo/defaults/default_base_engine.cpp
@@ -53,9 +53,11 @@ void setDefaultBaseEngine(DECLARE_CONFIG_PARAMETER_SIGNATURE) {
 	// Fuel pump
 	engineConfiguration->startUpFuelPumpDuration = 4;
 
-	// Fan
+	// Fans
 	engineConfiguration->fanOnTemperature = 95;
 	engineConfiguration->fanOffTemperature = 91;
+	engineConfiguration->fan2OnTemperature = 95;
+	engineConfiguration->fan2OffTemperature = 91;
 
 	// Tachometer
 	// 50% duty cycle is the default for tach signal
diff --git a/firmware/controllers/system/efi_gpio.cpp b/firmware/controllers/system/efi_gpio.cpp
index a43d18d1f0..9a6a98c3a5 100644
--- a/firmware/controllers/system/efi_gpio.cpp
+++ b/firmware/controllers/system/efi_gpio.cpp
@@ -113,6 +113,7 @@ EnginePins::EnginePins() :
 		starterControl("Starter Relay", CONFIG_PIN_OFFSETS(starterControl)),
 		starterRelayDisable("Starter Disable Relay", CONFIG_PIN_OFFSETS(starterRelayDisable)),
 		fanRelay("Fan Relay", CONFIG_PIN_OFFSETS(fan)),
+		fanRelay2("Fan Relay 2", CONFIG_PIN_OFFSETS(fan2)),
 		acRelay("A/C Relay", CONFIG_PIN_OFFSETS(acRelay)),
 		fuelPumpRelay("Fuel pump Relay", CONFIG_PIN_OFFSETS(fuelPump)),
 	    boostPin("Boost", CONFIG_PIN_OFFSETS(boostControl)),
diff --git a/firmware/controllers/system/efi_gpio.h b/firmware/controllers/system/efi_gpio.h
index 0276f0deb0..a5559c2882 100644
--- a/firmware/controllers/system/efi_gpio.h
+++ b/firmware/controllers/system/efi_gpio.h
@@ -176,6 +176,8 @@ public:
 	RegisteredOutputPin starterRelayDisable;
 
 	RegisteredOutputPin fanRelay;
+	RegisteredOutputPin fanRelay2;
+
 	// see acRelayPin
 	RegisteredOutputPin acRelay;
 	RegisteredOutputPin fuelPumpRelay;
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 2986caed98..d2af03ead7 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -1342,7 +1342,7 @@ tle8888_mode_e tle8888mode;
 	custom injector_compensation_mode_e 1 bits, U08, @OFFSET@, [0:1], "None", "Fixed rail pressure", "Sensed Rail Pressure"
 	injector_compensation_mode_e injectorCompensationMode;+None = I have a MAP-referenced fuel pressure regulator\nFixed rail pressure = I have an atmosphere-referenced fuel pressure regulator (returnless, typically)\nSensed rail pressure = I have a fuel pressure sensor;
 
-	uint8_t unused2419;;"units", 1, 0, -20, 100, 0
+	pin_output_mode_e fan2PinMode;
 	float fuelReferencePressure;+This is the pressure at which your injector flow is known.\nFor example if your injectors flow 400cc/min at 3.5 bar, enter 350kpa here.;"kPa", 1, 0, 0, 700000, 0
 	float unused244_2;;"units", 1, 0, -20, 100, 0
 	float unused244_3;;"units", 1, 0, -20, 100, 0
@@ -1392,9 +1392,9 @@ tle8888_mode_e tle8888mode;
 	linear_sensor_s oilPressure;
 
 	spi_device_e accelerometerSpiDevice;
-	uint8_t[1] unusedAuxVoltage1_TODO_332;;"units", 1, 0, -20, 100, 0
-	uint8_t[1] unusedAuxVoltage2_TODO_332;;"units", 1, 0, -20, 100, 0
-	uint8_t[1] unusedSpiPadding5;;"units", 1, 0, -20, 100, 0
+	output_pin_e fan2Pin;
+	uint8_t fan2OnTemperature;+Cooling fan turn-on temperature threshold, in Celsius;"deg C", 1, 0, 0, 150, 0
+	uint8_t fan2OffTemperature;+Cooling fan turn-off temperature threshold, in Celsius;"deg C", 1, 0, 0, 150, 0
 	float[FSIO_CURVE_16] fsioCurve1Bins;;"x",        1,     0,   -999,    1000.0,  3
 	float[FSIO_CURVE_16] fsioCurve1;;"y",      1,     0,      -999,    1000.0,   3
 	float[FSIO_CURVE_16] fsioCurve2Bins;;"x",        1,     0,   -999,    1000.0,  3
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index 422b6f9bce..3b3469a9bf 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -2676,12 +2676,12 @@ cmd_set_engine_type_default					= "@@TS_IO_TEST_COMMAND_char@@\x00\x31\x00\x00"
 		field = "Off temperature",					fanOffTemperature
 		field = "Enable with AC",					enableFan1WithAc
 
-	;dialog = fan2Settings, "Fan 2"
-	;	field = "Pin",								fan2Pin
-	;	field = "Pin mode",							fan2PinMode
-	;	field = "On temperature",					fan2OnTemperature
-	;	field = "Off temperature",					fan2OffTemperature
-	;	field = "Enable with AC",					enableFan2WithAc
+	dialog = fan2Settings, "Fan 2"
+		field = "Pin",								fan2Pin
+		field = "Pin mode",							fan2PinMode
+		field = "On temperature",					fan2OnTemperature
+		field = "Off temperature",					fan2OffTemperature
+		field = "Enable with AC",					enableFan2WithAc
 
 	dialog = acSettings, "A/C Settings"
 		field = "A/C Relay",						acRelayPin
@@ -2689,7 +2689,7 @@ cmd_set_engine_type_default					= "@@TS_IO_TEST_COMMAND_char@@\x00\x31\x00\x00"
 
 	dialog = fanSetting, "Fan Settings"
 		panel = fan1Settings
-		;panel = fan2Settings
+		panel = fan2Settings
 		panel = acSettings
 
 	dialog = fuelPump, "Fuel Pump"