diff --git a/firmware/controllers/algo/engine_configuration_generated_structures.h b/firmware/controllers/algo/engine_configuration_generated_structures.h
index 7f32240062..89f8a1cd82 100644
--- a/firmware/controllers/algo/engine_configuration_generated_structures.h
+++ b/firmware/controllers/algo/engine_configuration_generated_structures.h
@@ -1,4 +1,4 @@
-// this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Thu Apr 26 02:12:36 EDT 2018
+// this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Tue May 08 11:56:12 EDT 2018
 // begin
 #ifndef ENGINE_CONFIGURATION_GENERATED_H_
 #define ENGINE_CONFIGURATION_GENERATED_H_
@@ -1988,6 +1988,7 @@ typedef struct {
 	 */
 	adc_channel_e cj125ur;
 	/**
+	 * per-cylinder timing correction
 	 * offset 2728
 	 */
 	cfg_float_t_1f timing_offset_cylinder[IGNITION_PIN_COUNT];
@@ -2384,4 +2385,4 @@ typedef struct {
 
 #endif
 // end
-// this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Thu Apr 26 02:12:36 EDT 2018
+// this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Tue May 08 11:56:12 EDT 2018
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index eb1170c7f2..414feed761 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -864,7 +864,7 @@ float[MAP_ACCEL_TAPER] mapAccelTaperMult;;"mult",      1,     0,   0.0,    300,
 	adc_channel_e cj125ur;heater input
 	
 	custom cfg_float_t_1f 4 scalar,  F32,   @OFFSET@, 		"Val",	   1,	   0,       -20000000, 20000000,	  1
-	cfg_float_t_1f[IGNITION_PIN_COUNT iterate] timing_offset_cylinder;
+	cfg_float_t_1f[IGNITION_PIN_COUNT iterate] timing_offset_cylinder;per-cylinder timing correction
 
 	pin_input_mode_e brakePedalPinMode;
 	float idlePidActivationTime;;"seconds",        1,     0,  0,    60,  1
diff --git a/firmware/tunerstudio/rusefi.ini b/firmware/tunerstudio/rusefi.ini
index 63220aeb49..9908dd28b8 100644
--- a/firmware/tunerstudio/rusefi.ini
+++ b/firmware/tunerstudio/rusefi.ini
@@ -63,7 +63,7 @@ enable2ndByteCanID = false
 
 ; see PAGE_0_SIZE in C source code    
 ; CONFIG_DEFINITION_START
-; this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Fri May 04 16:42:30 EDT 2018
+; this section was generated automatically by ConfigDefinition.jar based on rusefi_config.txt Tue May 08 11:56:12 EDT 2018
 
 pageSize            = 20000
 page = 1
@@ -2049,7 +2049,7 @@ cmd_stop_engine              = "w\x00\x99\x00\x00"
 	dialog = injectionDeadTime,	"", yAxis
 		panel = injectorsDeadTime,		East
 
-	dialog = ignitionCylExtra, "Ignition Cylinder Extra"
+	dialog = ignitionCylExtra, "Ignition Cylinder Extra Timing"
 		field = "Extra cyl #1",                       timing_offset_cylinder1
 		field = "Extra cyl #2",                       timing_offset_cylinder2, {cylindersCount > 1}
 		field = "Extra cyl #3",                       timing_offset_cylinder3, {cylindersCount > 2}
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index d58b370214..b4e7ac4139 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -1211,7 +1211,7 @@ cmd_stop_engine              = "w\x00\x99\x00\x00"
 	dialog = injectionDeadTime,	"", yAxis
 		panel = injectorsDeadTime,		East
 
-	dialog = ignitionCylExtra, "Ignition Cylinder Extra"
+	dialog = ignitionCylExtra, "Ignition Cylinder Extra Timing"
 		field = "Extra cyl #1",                       timing_offset_cylinder1
 		field = "Extra cyl #2",                       timing_offset_cylinder2, {cylindersCount > 1}
 		field = "Extra cyl #3",                       timing_offset_cylinder3, {cylindersCount > 2}