diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 3c24011d25..4bba235e5e 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -460,7 +460,7 @@ bit iatSensorPulldown
 bit allowIdenticalPps
 bit overrideVvtTriggerGaps
 bit useSpiImu
-bit unused31
+bit enableStagedInjection
 
 int16_t tpsMin;Closed throttle, 1 volt = 200 units.\nSee also tps1_1AdcChannel\nset tps_min X;"ADC", 1, 0, 0, 1023, 0
 int16_t tpsMax;Full throttle.\nSee also tps1_1AdcChannel\nset tps_max X;"ADC", 1, 0, 0, 1023, 0
@@ -1616,6 +1616,8 @@ int8_t[TRACTION_CONTROL_ETB_DROP_SIZE x TRACTION_CONTROL_ETB_DROP_SIZE] traction
 	uint8_t maxInjectorDutySustained;If injector duty cycle hits this value for the specified delay time, cut fuel.;"%", 1, 0, 50, 120, 0
 	uint8_t autoscale maxInjectorDutySustainedTimeout;Timeout period for duty cycle over the sustained limit to trigger duty cycle protection.;"sec", 0.1, 0, 0, 5, 1
 
+	output_pin_e[MAX_CYLINDER_COUNT iterate] injectionPinsStage2;
+
 
 uint8_t[168] mainUnusedEnd;;"units", 1, 0, 0, 1, 0
 
@@ -1661,7 +1663,6 @@ engine_configuration_s engineConfiguration;
 
 	float[CRANKING_CURVE_SIZE] crankingTpsCoef;Cranking fuel correction coefficient based on TPS;"Ratio", 1, 0, 0, 700, 2
 	float[CRANKING_CURVE_SIZE] crankingTpsBins;;"%", 1, 0, 0, 100, 2
-	float[16] unusedSpaceHere
 
 uint16_t[CRANKING_ADVANCE_CURVE_SIZE] crankingAdvanceBins;Optional timing advance table for Cranking (see useSeparateAdvanceForCranking);"RPM", 1, 0, 0, 25000, 0
 int16_t[CRANKING_ADVANCE_CURVE_SIZE] autoscale crankingAdvance;Optional timing advance table for Cranking (see useSeparateAdvanceForCranking);"deg", 0.01, 0, -20, 90, 2
@@ -1881,6 +1882,12 @@ uint8_t[4 x 4] autoscale lambdaMaxDeviationTable;;"lambda", 0.01, 0, 0, 1, 2
 uint16_t[4] lambdaMaxDeviationLoadBins;;"", 1, 0, 0, 1000, 0
 uint16_t[4] lambdaMaxDeviationRpmBins;;"RPM",  1, 0, 0, 18000, 0
 
+#define INJ_STAGING_COUNT 6
+
+uint8_t[INJ_STAGING_COUNT x INJ_STAGING_COUNT] injectorStagingTable;;"%", 1, 0, 0, 90, 0
+uint16_t[INJ_STAGING_COUNT] injectorStagingLoadBins;;"", 1, 0, 0, 1000, 0
+uint16_t[INJ_STAGING_COUNT] injectorStagingRpmBins;;"RPM",  1, 0, 0, 18000, 0
+
 end_struct
 
 #define CMD_SET_SENSOR_MOCK "set_sensor_mock"
@@ -2220,6 +2227,7 @@ end_struct
 
 #define PROTOCOL_COIL1_SHORT_NAME "c1"
 #define PROTOCOL_INJ1_SHORT_NAME "i1"
+#define PROTOCOL_INJ1_STAGE2_SHORT_NAME "j1"
 
 #define SIMULATOR_TUNE_BIN_FILE_NAME_PREFIX "generated/simulator_tune_image"
 #define SIMULATOR_TUNE_BIN_FILE_NAME_SUFFIX ".bin"
diff --git a/firmware/integration/rusefi_config_shared.txt b/firmware/integration/rusefi_config_shared.txt
index ec00da0d99..c46f5e03a6 100644
--- a/firmware/integration/rusefi_config_shared.txt
+++ b/firmware/integration/rusefi_config_shared.txt
@@ -155,6 +155,7 @@
 #define GAUGE_NAME_FUEL_CRANKING "Fuel: cranking"
 #define GAUGE_NAME_FUEL_RUNNING "Fuel: running"
 #define GAUGE_NAME_FUEL_LAST_INJECTION "Fuel: Last inj pulse width"
+#define GAUGE_NAME_FUEL_LAST_INJECTION_STAGE_2 "Fuel: Last inj pulse width stg 2"
 #define GAUGE_NAME_FUEL_BASE "Fuel: base cycle mass"
 #define GAUGE_NAME_FUEL_TRIM "Fuel: fuel trim"
 #define GAUGE_NAME_FUEL_TRIM_2 "Fuel: fuel trim 2"
@@ -165,6 +166,7 @@
 #define GAUGE_NAME_FUEL_FLOW "Fuel: Flow rate"
 
 #define GAUGE_NAME_FUEL_INJ_DUTY "Fuel: injector duty cycle"
+#define GAUGE_NAME_FUEL_INJ_DUTY_STAGE_2 "Fuel: injector duty cycle stage 2"
 #define GAUGE_NAME_TCHARGE "Air: SD tCharge"
 #define GAUGE_NAME_TARGET_AFR "Fuel: target AFR"
 #define GAUGE_NAME_TARGET_LAMBDA "Fuel: target lambda"