diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 5a559ba2cf..f62f5e3421 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -151,6 +151,8 @@ void setCustomEngineConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 void setFrankensoBoardTestConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 	setCustomEngineConfiguration(PASS_ENGINE_PARAMETER_SIGNATURE);
 
+	engineConfiguration->directSelfStimulation = true; // this engine type is used for board validation
+
 	engineConfiguration->specs.cylindersCount = 12;
 	engineConfiguration->specs.firingOrder = FO_1_7_5_11_3_9_6_12_2_8_4_10;