diff --git a/engine/class_modules/warlock/sc_warlock_actions.cpp b/engine/class_modules/warlock/sc_warlock_actions.cpp
index b118d8d65b0..f7633d74c4d 100644
--- a/engine/class_modules/warlock/sc_warlock_actions.cpp
+++ b/engine/class_modules/warlock/sc_warlock_actions.cpp
@@ -3288,8 +3288,7 @@ using namespace helpers;
         spell_power_mod.direct = p->talents.implosion_aoe->effectN( 1 ).sp_coeff();
         aoe = -1;
         target_filter_callback = secondary_targets_only();
-        // NOTE: 2026-07-06: The spell description lists 125% effectiveness, but in-game damage behaves as +125% increased effectiveness (bug?)
-        base_dd_multiplier *= ( p->bugs ? 1.0 : 0.0 ) + p->tier.wl_demonology_12_1_class_set_4pc->effectN( 2 ).percent();
+        base_dd_multiplier *= p->tier.wl_demonology_12_1_class_set_4pc->effectN( 2 ).percent();
       }
     };
 
@@ -3303,8 +3302,7 @@ using namespace helpers;
         spell_power_mod.direct = p->talents.implosion_aoe->effectN( 1 ).sp_coeff();
         aoe = 0;
         radius = 0;
-        // NOTE: 2026-07-06: The spell description lists 150% effectiveness, but in-game damage behaves as +150% increased effectiveness (bug?)
-        base_dd_multiplier *= ( p->bugs ? 1.0 : 0.0 ) + p->tier.wl_demonology_12_1_class_set_4pc->effectN( 1 ).percent();
+        base_dd_multiplier *= p->tier.wl_demonology_12_1_class_set_4pc->effectN( 1 ).percent();
 
         impact_action = new isolated_implosion_aoe_secondary_t( p );
         impact_action->stats = stats;
diff --git a/engine/class_modules/warlock/sc_warlock_pets.cpp b/engine/class_modules/warlock/sc_warlock_pets.cpp
index 0959c373f7a..a36c73af572 100644
--- a/engine/class_modules/warlock/sc_warlock_pets.cpp
+++ b/engine/class_modules/warlock/sc_warlock_pets.cpp
@@ -1316,17 +1316,34 @@ vilefiend_t::vilefiend_t( warlock_t* owner )
   {
     npc_id = owner->talents.gloomhound->effectN( 1 ).misc_value1();
     npc_suffix = "vilefiend";
+    // 2026-08-01: Validated coefficients
+    if ( sim->dbc->wowv() >= wowv_t( 12, 1, 0 ) )
+    {
+      owner_coeff.ap_from_sp = 0.6075;
+      owner_coeff.sp_from_sp = 2.6325;
+    }
+    else
+    {
+      owner_coeff.ap_from_sp = 0.45;
+      owner_coeff.sp_from_sp = 1.95;
+    }
   }
   else if ( owner->talents.mark_of_fharg.ok() )
   {
     npc_id = owner->talents.charhound->effectN( 1 ).misc_value1();
     npc_suffix = "vilefiend";
+    // 2026-08-01: Validated coefficients
+    owner_coeff.ap_from_sp = 0.45;
+    owner_coeff.sp_from_sp = 1.95;
   }
   else
   {
     npc_id = owner->talents.vilefiend->effectN( 1 ).misc_value1();
     // NOTE: 2026-07-11 Regular Vilefiend do not trigger Hellbent Commander on heartbeat (bug?)
     triggers.hellbent_commander_heartbeat &= !bugs;
+    // 2026-08-01: Validated coefficients
+    owner_coeff.ap_from_sp = 0.45;
+    owner_coeff.sp_from_sp = 1.95;
   }
 
   // NOTE: 2026-07-11 Vilefiend do not trigger Hellbent Commander on demise (must wait to player heartbeat) (bug?)
@@ -1340,10 +1357,6 @@ vilefiend_t::vilefiend_t( warlock_t* owner )
   if ( sim->dbc->wowv() < wowv_t( 12, 1, 0 ) )
     affected_by.demonic_brutality = false;
 
-  // 2026-02-17: Validated coefficients
-  owner_coeff.ap_from_sp = 0.45;
-  owner_coeff.sp_from_sp = 1.95;
-
   owner_coeff.health = 0.75;
 
   bile_spit_executes = 1; // Only one Bile Spit per summon