diff --git a/firmware/config/engines/mazda_626.cpp b/firmware/config/engines/mazda_626.cpp
index 2ee044ea24..f0c64bbdc5 100644
--- a/firmware/config/engines/mazda_626.cpp
+++ b/firmware/config/engines/mazda_626.cpp
@@ -59,7 +59,8 @@ void setMazda626EngineConfiguration(DECLARE_ENGINE_PARAMETER_F) {
 	// http://i.imgur.com/fclVzvu.jpg
 	setCommonNTCSensor(&engineConfiguration->clt);
 	// http://i.imgur.com/2hI67yW.jpg
-	setThermistorConfiguration(&engineConfiguration->iat, 13, 56000, 50, 9000, 90.0, 18000);
+	setThermistorConfiguration(&engineConfiguration->iat, 13, 56000, 50, 9000, 80.0, 2700);
+	engineConfiguration->iat.bias_resistor = 18000;
 
 	commonFrankensoAnalogInputs(engineConfiguration);
 //	engineConfiguration->map.sensor.hwChannel = EFI_ADC_4;