diff --git a/firmware/config/engines/sachs.cpp b/firmware/config/engines/sachs.cpp
index 8f39e2e284..73dfa31090 100644
--- a/firmware/config/engines/sachs.cpp
+++ b/firmware/config/engines/sachs.cpp
@@ -82,8 +82,8 @@ void setSachs(DECLARE_CONFIG_PARAMETER_SIGNATURE) {
 
 	// todo: extract a method? figure out something smarter
 	setTimingRpmBin(800, 15000 PASS_CONFIG_PARAMETER_SUFFIX);
-	setLinearCurve(config->veRpmBins, 15000, 7000, 1);
-	setLinearCurve(config->lambdaRpmBins, 15000, 7000, 1);
+	setLinearCurve(config->veRpmBins, 7000, 15000, 1);
+	setLinearCurve(config->lambdaRpmBins, 500, 7000, 1);
 
 	engineConfiguration->hasFrequencyReportingMapSensor = true;
 	engineConfiguration->frequencyReportingMapInputPin = GPIOC_6;
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index 7f288eaaea..6d94dff520 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -366,7 +366,7 @@ static void setCanFrankensoDefaults(DECLARE_CONFIG_PARAMETER_SIGNATURE) {
  * see also setDefaultIdleSpeedTarget()
  */
 void setTargetRpmCurve(int rpm DECLARE_CONFIG_PARAMETER_SUFFIX) {
-	setLinearCurve(engineConfiguration->cltIdleRpmBins, CLT_CURVE_RANGE_FROM, 90, 10);
+	setLinearCurve(engineConfiguration->cltIdleRpmBins, CLT_CURVE_RANGE_FROM, 140, 10);
 	setLinearCurve(engineConfiguration->cltIdleRpm, rpm, rpm, 10);
 }
 
diff --git a/firmware/util/math/interpolation.h b/firmware/util/math/interpolation.h
index 0ce61104e0..09af1879af 100644
--- a/firmware/util/math/interpolation.h
+++ b/firmware/util/math/interpolation.h
@@ -31,7 +31,7 @@ void ensureArrayIsAscending(const char* msg, const TValue (&values)[TSize]) {
 		auto cur = values[i];
 		auto next = values[i + 1];
 		if (next <= cur) {
-			firmwareError(CUSTOM_ERR_AXIS_ORDER, "Invalid table axis (must be ascending!): %s %f %f", msg, cur, next);
+			firmwareError(CUSTOM_ERR_AXIS_ORDER, "Invalid table axis (must be ascending!): %s %f %f at %d", msg, cur, next, i);
 		}
 	}
 }