Higher feedrates, stock pid parameters

Marlin/Configuration.h

@@ -488,17 +488,25 @@
   //#define PID_PARAMS_PER_HOTEND // Uses separate PID parameters for each extruder (useful for mismatched extruders)
                                   // Set/get with gcode: M301 E[extruder number, 0-2]
 
-  // Creality Ender-3
+  // Creality Ender-3 
   #if ENABLED(PID_PARAMS_PER_HOTEND)
     // Specify between 1 and HOTENDS values per array.
     // If fewer than EXTRUDER values are provided, the last element will be repeated.
     #define DEFAULT_Kp_LIST {  21.73,  21.73 }
     #define DEFAULT_Ki_LIST {   1.54,   1.54 }
     #define DEFAULT_Kd_LIST {  76.55,  76.55 }
   #else
-    #define DEFAULT_Kp   24.2
-    #define DEFAULT_Ki   1.96
-    #define DEFAULT_Kd   74.6
+    // stock parameters
+
+    // SEE https://github.com/Creality3DPrinting/Ender-3/blob/88c7758cea9d0d00a54fdb238bedb3b33425f409/Ender-3%20Firmware%20(Marlin)/Ender-3%20(includes%20power%20failure%20resume-%20English)/Marlin/Configuration.h#L356-L358
+    #define  DEFAULT_Kp 20.84
+    #define  DEFAULT_Ki 1.96
+    #define  DEFAULT_Kd 55.47
+
+    // auto PID parameters
+    // #define DEFAULT_Kp 24.93
+    // #define DEFAULT_Ki 2.07
+    // #define DEFAULT_Kd 74.93
   #endif
 #endif // PIDTEMP
 
@@ -751,11 +759,11 @@
  * Override with M203
  *                                      X, Y, Z, E0 [, E1[, E2...]]
  */
-#define DEFAULT_MAX_FEEDRATE          { 500, 500, 10, 25 }
+#define DEFAULT_MAX_FEEDRATE          { 500, 500, 10, 40 }
 
 //#define LIMITED_MAX_FR_EDITING        // Limit edit via M203 or LCD to DEFAULT_MAX_FEEDRATE * 2
 #if ENABLED(LIMITED_MAX_FR_EDITING)
-  #define MAX_FEEDRATE_EDIT_VALUES    { 600, 600, 20, 50 } // ...or, set your own edit limits
+  #define MAX_FEEDRATE_EDIT_VALUES    { 600, 600, 20, 80 } // ...or, set your own edit limits
 #endif
 
 /**
@@ -764,11 +772,11 @@
  * Override with M201
  *                                      X, Y, Z, E0 [, E1[, E2...]]
  */
-#define DEFAULT_MAX_ACCELERATION      { 500, 500, 100, 5000 }
+#define DEFAULT_MAX_ACCELERATION      { 500, 500, 100, 1000 }
 
 //#define LIMITED_MAX_ACCEL_EDITING     // Limit edit via M201 or LCD to DEFAULT_MAX_ACCELERATION * 2
 #if ENABLED(LIMITED_MAX_ACCEL_EDITING)
-  #define MAX_ACCEL_EDIT_VALUES       { 6000, 6000, 200, 20000 } // ...or, set your own edit limits
+  #define MAX_ACCEL_EDIT_VALUES       { 6000, 6000, 200, 5000 } // ...or, set your own edit limits
 #endif
 
 /**
@@ -1506,7 +1514,7 @@
 
 // Preheat Constants
 #define PREHEAT_1_LABEL       "PLA"
-#define PREHEAT_1_TEMP_HOTEND 220
+#define PREHEAT_1_TEMP_HOTEND 200
 #define PREHEAT_1_TEMP_BED     45
 #define PREHEAT_1_FAN_SPEED   0 // Value from 0 to 255