diff --git a/Engines/cfm56_5b3.xml b/Engines/cfm56_5b3.xml
index cdf63b80..a30d5cbe 100644
--- a/Engines/cfm56_5b3.xml
+++ b/Engines/cfm56_5b3.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="CFM56_5B3">
   <milthrust>     27000 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.2 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
diff --git a/Engines/cfm56_5b4.xml b/Engines/cfm56_5b4.xml
index acf89e62..315abf3a 100644
--- a/Engines/cfm56_5b4.xml
+++ b/Engines/cfm56_5b4.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="CFM56_5B4">
   <milthrust>     27000 </milthrust>
   <bypassratio>     7.2 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
diff --git a/Engines/cfm56_5b6.xml b/Engines/cfm56_5b6.xml
index 5d0d88db..01510828 100644
--- a/Engines/cfm56_5b6.xml
+++ b/Engines/cfm56_5b6.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="CFM56_5B6">
   <milthrust>     27000 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.2 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
diff --git a/Engines/leap1a26.xml b/Engines/leap1a26.xml
index c0cc5dbc..3a11f61e 100644
--- a/Engines/leap1a26.xml
+++ b/Engines/leap1a26.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0"?>
 
 <turbine_engine name="leap1a26">
-  <milthrust>     27120 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
+  <milthrust>     27000 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.2 </bypassratio>
-  <tsfc>            0.8 </tsfc>
-  <bleed>          0.029 </bleed>
+  <tsfc>          0.412 </tsfc>
+  <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
   <n1spinup>        0.2 </n1spinup>
diff --git a/Engines/leap1a32.xml b/Engines/leap1a32.xml
index 33a979fa..fdfb0764 100644
--- a/Engines/leap1a32.xml
+++ b/Engines/leap1a32.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0"?>
 
 <turbine_engine name="leap1a32">
-  <milthrust>     32160 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
+  <milthrust>     27000 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.2 </bypassratio>
-  <tsfc>            0.8 </tsfc>
-  <bleed>          0.029 </bleed>
+  <tsfc>          0.412 </tsfc>
+  <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
   <n1spinup>        0.2 </n1spinup>
diff --git a/Engines/v2522_a5.xml b/Engines/v2522_a5.xml
index 63d41c1d..c1c38516 100644
--- a/Engines/v2522_a5.xml
+++ b/Engines/v2522_a5.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="V2527_A5">
   <milthrust>     26600 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.1 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
diff --git a/Engines/v2527_a5.xml b/Engines/v2527_a5.xml
index 6b6c2afe..cfdcc9ad 100644
--- a/Engines/v2527_a5.xml
+++ b/Engines/v2527_a5.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="V2527_A5">
   <milthrust>     26600 </milthrust>
   <bypassratio>     7.1 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>
diff --git a/Engines/v2533_a5.xml b/Engines/v2533_a5.xml
index 63d41c1d..c1c38516 100644
--- a/Engines/v2533_a5.xml
+++ b/Engines/v2533_a5.xml
@@ -3,7 +3,7 @@
 <turbine_engine name="V2527_A5">
   <milthrust>     26600 </milthrust> <!-- Will put proper thrust amount once FDE sorted out -->
   <bypassratio>     7.1 </bypassratio>
-  <tsfc>            0.8 </tsfc>
+  <tsfc>          0.412 </tsfc>
   <bleed>          0.03 </bleed>
   <idlen1>         22.4 </idlen1>
   <idlen2>         60.9 </idlen2>