diff --git a/firmware/config/engines/bmw_e34.cpp b/firmware/config/engines/bmw_e34.cpp
index 4133f846a6..da6a388be7 100644
--- a/firmware/config/engines/bmw_e34.cpp
+++ b/firmware/config/engines/bmw_e34.cpp
@@ -65,6 +65,8 @@ void setBmwE34(DECLARE_ENGINE_PARAMETER_F) {
 	setConstantDwell(3 PASS_ENGINE_PARAMETER); // a bit shorter dwell
 	engineConfiguration->ignMathCalculateAtIndex = 14;
 
+	engineConfiguration->mapAveragingSchedulingAtIndex = 6;
+
 	// Cranking
 	engineConfiguration->cranking.rpm = 600;
 	engineConfiguration->crankingInjectionMode = IM_BATCH;
diff --git a/firmware/controllers/algo/engine_configuration_generated_structures.h b/firmware/controllers/algo/engine_configuration_generated_structures.h
index 33ecf85d3a..4b48882940 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 by config_definition.jar on Wed Apr 15 12:11:02 EDT 2015
+// this section was generated by config_definition.jar on Sat Apr 18 18:59:21 EDT 2015
 // begin
 #include "rusefi_types.h"
 typedef struct {
@@ -1099,7 +1099,11 @@ typedef struct {
 	/**
 	 * offset 1648
 	 */
-	int unused3[134];
+	int mapAveragingSchedulingAtIndex;
+	/**
+	 * offset 1652
+	 */
+	int unused3[133];
 	/**
 	 * offset 2184
 	 */
@@ -1279,4 +1283,4 @@ typedef struct {
 } persistent_config_s;
 
 // end
-// this section was generated by config_definition.jar on Wed Apr 15 12:11:02 EDT 2015
+// this section was generated by config_definition.jar on Sat Apr 18 18:59:21 EDT 2015
diff --git a/firmware/controllers/map_averaging.cpp b/firmware/controllers/map_averaging.cpp
index c10b870dd6..21bd4a43cd 100644
--- a/firmware/controllers/map_averaging.cpp
+++ b/firmware/controllers/map_averaging.cpp
@@ -32,6 +32,7 @@
 #include "interpolation.h"
 #include "signal_executor.h"
 #include "engine.h"
+#include "engine_math.h"
 
 #if EFI_ANALOG_CHART
 #include "analog_chart.h"
@@ -168,7 +169,7 @@ static void endAveraging(void *arg) {
 static void mapAveragingCallback(trigger_event_e ckpEventType, uint32_t index DECLARE_ENGINE_PARAMETER_S) {
 	// this callback is invoked on interrupt thread
 	engine->m.beforeMapAveragingCb = GET_TIMESTAMP();
-	if (index != 0)
+	if (index != engineConfiguration->mapAveragingSchedulingAtIndex)
 		return;
 
 	int rpm = engine->rpmCalculator.rpmValue;
@@ -180,17 +181,23 @@ static void mapAveragingCallback(trigger_event_e ckpEventType, uint32_t index DE
 
 	MAP_sensor_config_s * config = &engineConfiguration->map;
 
-	angle_t samplingStart = interpolate2d(rpm, config->samplingAngleBins, config->samplingAngle, MAP_ANGLE_SIZE);
+	angle_t currentAngle = TRIGGER_SHAPE(eventAngles[index]);
+
+	angle_t samplingStart = interpolate2d(rpm, config->samplingAngleBins, config->samplingAngle, MAP_ANGLE_SIZE) - currentAngle;
 	angle_t samplingDuration = interpolate2d(rpm, config->samplingWindowBins, config->samplingWindow, MAP_WINDOW_SIZE);
 	if (samplingDuration <= 0) {
 		firmwareError("map sampling angle should be positive");
 		return;
 	}
+	fixAngle(samplingStart);
+
+	angle_t samplingEnd = samplingStart + samplingDuration;
+	fixAngle(samplingEnd);
 
 	int structIndex = getRevolutionCounter() % 2;
 	// todo: schedule this based on closest trigger event, same as ignition works
 	scheduleByAngle(rpm, &startTimer[structIndex], samplingStart, startAveraging, NULL, &engine->rpmCalculator);
-	scheduleByAngle(rpm, &endTimer[structIndex], samplingStart + samplingDuration, endAveraging, NULL, &engine->rpmCalculator);
+	scheduleByAngle(rpm, &endTimer[structIndex], samplingEnd, endAveraging, NULL, &engine->rpmCalculator);
 	engine->m.mapAveragingCbTime = GET_TIMESTAMP() - engine->m.beforeMapAveragingCb;
 }
 
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 46b8b30d4d..a280552425 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -487,7 +487,10 @@ custom pin_input_mode_e 4 scalar, F32,	@OFFSET@,	"ms", 1, 0, 0, 200, 1
 	brain_pin_e stepperEnablePin;
 
 float noAccelAfterHardLimitPeriodSecs;;"sec",      1,      0,       0, 60,      0
-	int[134] unused3;
+
+int mapAveragingSchedulingAtIndex;
+
+	int[133] unused3;
 
 	int tpsAccelLength;;"len",        1,     0,    1, 200,     3
 	float tpsAccelEnrichmentThreshold;;"roc",        1,     0,    0, 200,     3
diff --git a/java_console/autotest/src/com/rusefi/AutoTest.java b/java_console/autotest/src/com/rusefi/AutoTest.java
index bdbff3d0db..d59b61ca17 100644
--- a/java_console/autotest/src/com/rusefi/AutoTest.java
+++ b/java_console/autotest/src/com/rusefi/AutoTest.java
@@ -62,6 +62,8 @@ public class AutoTest {
 
         x = 688.464;
         assertWave(msg, chart, WaveChart.SPARK_1, 0.0597999999, x, x + 180, x + 360, x + 540);
+
+        assertWave(msg, chart, WaveChart.MAP_AVERAGING, 0.139, 17.784);
     }
 
     private static void testMitsu() {
diff --git a/java_console/models/src/com/rusefi/waves/WaveChart.java b/java_console/models/src/com/rusefi/waves/WaveChart.java
index a7340d0f01..b09d868f6b 100644
--- a/java_console/models/src/com/rusefi/waves/WaveChart.java
+++ b/java_console/models/src/com/rusefi/waves/WaveChart.java
@@ -29,6 +29,7 @@ public class WaveChart {
 
     public static final String TRIGGER_1 = "t1";
     public static final String TRIGGER_2 = "t2";
+    public static final String MAP_AVERAGING = "map";
 
     public final Map<String, StringBuilder> map;