diff --git a/firmware/controllers/algo/engine.h b/firmware/controllers/algo/engine.h
index 6a58816a7f..fc361bd071 100644
--- a/firmware/controllers/algo/engine.h
+++ b/firmware/controllers/algo/engine.h
@@ -80,6 +80,7 @@ public:
 	explicit Engine(persistent_config_s *config);
 	Engine();
 	bool isPwmEnabled = true;
+	int triggerActivitySecond = 0;
 
 	IEtbController *etbControllers[ETB_COUNT] = {nullptr};
 	IFuelComputer *fuelComputer = nullptr;
diff --git a/firmware/controllers/core/fsio_core.h b/firmware/controllers/core/fsio_core.h
index fa6e666b8e..495c44e422 100644
--- a/firmware/controllers/core/fsio_core.h
+++ b/firmware/controllers/core/fsio_core.h
@@ -56,6 +56,7 @@ typedef enum {
 	LE_METHOD_FSIO_DIGITAL_INPUT = 123,
 	LE_METHOD_FSIO_SETTING = 124,
 	LE_METHOD_PPS = 125,
+	LE_METHOD_TIME_SINCE_TRIGGER_EVENT = 126,
 
 #include "fsio_enums_generated.def"
 
diff --git a/firmware/controllers/core/fsio_impl.cpp b/firmware/controllers/core/fsio_impl.cpp
index 5f55750bcf..9d11357b38 100644
--- a/firmware/controllers/core/fsio_impl.cpp
+++ b/firmware/controllers/core/fsio_impl.cpp
@@ -139,6 +139,7 @@ FsioValue getEngineValue(le_action_e action DECLARE_ENGINE_PARAMETER_SUFFIX) {
 	case LE_METHOD_EXHAUST_VVT:
 		return engine->triggerCentral.getVVTPosition();
 #endif
+	case LE_METHOD_TIME_SINCE_TRIGGER_EVENT:
 	case LE_METHOD_TIME_SINCE_BOOT:
 #if EFI_MAIN_RELAY_CONTROL
 		// in main relay control mode, we return the number of seconds since the ignition is turned on
@@ -781,7 +782,7 @@ void runHardcodedFsio(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 	}
 	// see FUEL_PUMP_LOGIC
 	if (CONFIG(fuelPumpPin) != GPIO_UNASSIGNED) {
-		enginePins.fuelPumpRelay.setValue((getTimeNowSeconds() < engineConfiguration->startUpFuelPumpDuration) || (engine->rpmCalculator.getRpm() > 0));
+		enginePins.fuelPumpRelay.setValue((getTimeNowSeconds() < engine->triggerActivitySecond + engineConfiguration->startUpFuelPumpDuration) || (engine->rpmCalculator.getRpm() > 0));
 	}
 	
 	enginePins.o2heater.setValue(engine->rpmCalculator.isRunning());
diff --git a/firmware/controllers/engine_cycle/main_trigger_callback.cpp b/firmware/controllers/engine_cycle/main_trigger_callback.cpp
index 9a7cc8d48c..a06747e54a 100644
--- a/firmware/controllers/engine_cycle/main_trigger_callback.cpp
+++ b/firmware/controllers/engine_cycle/main_trigger_callback.cpp
@@ -406,6 +406,14 @@ void mainTriggerCallback(uint32_t trgEventIndex, efitick_t edgeTimestamp DECLARE
 	int rpm = GET_RPM();
 	if (rpm == 0) {
 		// this happens while we just start cranking
+		/**
+		 * While we have start-up priming pulse, we also want to start pumping fuel again as soon as possible.
+		 * Hopefully battery would handle both cranking and fuel pump simultaneously?
+		 */
+		enginePins.fuelPumpRelay.setValue(true); // quickly set pin right from the callback here! todo: would it work OK for smart SPI pin?!
+#if EFI_PROD_CODE
+		engine->triggerActivitySecond = getTimeNowSeconds();
+#endif
 		// todo: check for 'trigger->is_synchnonized?'
 		// TODO: add 'pin shutdown' invocation somewhere - coils might be still open here!
 		return;
diff --git a/firmware/controllers/system_fsio.txt b/firmware/controllers/system_fsio.txt
index 092e612f28..c412cade89 100644
--- a/firmware/controllers/system_fsio.txt
+++ b/firmware/controllers/system_fsio.txt
@@ -13,6 +13,11 @@
 # (self and (coolant > fan_off_setting)) | (coolant > fan_on_setting) | is_clt_broken
 FAN_CONTROL_LOGIC=(fan and (coolant > cfg_fanOffTemperature)) | (coolant > cfg_fanOnTemperature) | is_clt_broken
 
+#
+# todo: we might have a bug here?
+# todo: 'time_since_boot' means 'getTimeIgnitionSeconds' in case of EFI_MAIN_RELAY_CONTROL like Proteus
+# and it's negative if ignition is off? does Proteus not get fuel pump start-up priming pulse?!
+#
 FUEL_PUMP_LOGIC=((time_since_boot >= 0) & (time_since_boot < startup_fuel_pump_duration)) | (rpm > 0)
 
 ALTERNATOR_LOGIC=vbatt < 14.5