diff --git a/firmware/controllers/algo/engine2.cpp b/firmware/controllers/algo/engine2.cpp
index 3937e0f6c7..5fa6f3509b 100644
--- a/firmware/controllers/algo/engine2.cpp
+++ b/firmware/controllers/algo/engine2.cpp
@@ -163,7 +163,7 @@ void EngineState::periodicFastCallback(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 	injectionOffset = getInjectionOffset(rpm, fuelLoad PASS_ENGINE_PARAMETER_SUFFIX);
 
 	float ignitionLoad = getIgnitionLoad(PASS_ENGINE_PARAMETER_SIGNATURE);
-	timingAdvance = getAdvance(rpm, ignitionLoad PASS_ENGINE_PARAMETER_SUFFIX) + luaAdjustments.ignitionTimingAdd;
+	timingAdvance = getAdvance(rpm, ignitionLoad PASS_ENGINE_PARAMETER_SUFFIX) * luaAdjustments.ignitionTimingMult + luaAdjustments.ignitionTimingAdd;
 
 	// TODO: calculate me from a table!
 	trailingSparkAngle = CONFIG(trailingSparkAngle);
diff --git a/firmware/controllers/algo/engine_state.h b/firmware/controllers/algo/engine_state.h
index 372ccd8ec9..6ab305ac7f 100644
--- a/firmware/controllers/algo/engine_state.h
+++ b/firmware/controllers/algo/engine_state.h
@@ -15,6 +15,9 @@
 
 struct LuaAdjustments {
 	float ignitionTimingAdd = 0;
+	float ignitionTimingMult = 1;
+	float fuelAdd = 0;
+	float fuelMult = 1;
 };
 
 class EngineState : public engine_state2_s {
diff --git a/firmware/controllers/lua/lua_hooks.cpp b/firmware/controllers/lua/lua_hooks.cpp
index bff02804ff..8c1f3e5c92 100644
--- a/firmware/controllers/lua/lua_hooks.cpp
+++ b/firmware/controllers/lua/lua_hooks.cpp
@@ -313,6 +313,24 @@ static int lua_setTimingAdd(lua_State* l) {
 
 	return 0;
 }
+
+static int lua_setTimingMult(lua_State* l) {
+	ENGINE(engineState).luaAdjustments.ignitionTimingMult = luaL_checknumber(l, 1);
+
+	return 0;
+}
+
+static int lua_setFuelAdd(lua_State* l) {
+	ENGINE(engineState).luaAdjustments.fuelAdd = luaL_checknumber(l, 1);
+
+	return 0;
+}
+
+static int lua_setFuelMult(lua_State* l) {
+	ENGINE(engineState).luaAdjustments.fuelMult = luaL_checknumber(l, 1);
+
+	return 0;
+}
 #endif // EFI_UNIT_TEST
 
 void configureRusefiLuaHooks(lua_State* l) {
@@ -346,5 +364,9 @@ void configureRusefiLuaHooks(lua_State* l) {
 	lua_register(l, "stopEngine", lua_stopEngine);
 
 	lua_register(l, "setTimingAdd", lua_setTimingAdd);
+	lua_register(l, "setTimingMult", lua_setTimingMult);
+
+	lua_register(l, "setFuelAdd", lua_setFuelAdd);
+	lua_register(l, "setFuelMult", lua_setFuelMult);
 #endif
 }