diff --git a/README.md b/README.md
index 7fc0d9a..40bc6a4 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,7 @@ While the i3 Mega is a great printer for it's price and produces fantastic resul
 
 #### PID tuning
 
-- Turn on parts cooling fan, I recommend running it at 70% because of the 12V mod (`M106 S178`)
-- Send `M303 E0 S230 C8 U1` to start extruder PID auto tuning
+- Turn on parts cooling fan, I recommend running it at 70% because of the 12V mod (`M106 S191`)
 - Send `M303 E0 S240 C8 U1` to start extruder PID auto tuning
 - Wait for it to finish
 - Send `M303 E-1 S80 C8 U1` to start heatbed PID auto tuning