diff --git a/src/d_netcmd.c b/src/d_netcmd.c
index ea3f00b28..2ec00e0cb 100644
--- a/src/d_netcmd.c
+++ b/src/d_netcmd.c
@@ -550,8 +550,8 @@ consvar_t cv_kartstacking_ring_handleboost = CVAR_INIT ("vanillaboost_ring_handl
 consvar_t cv_kartstacking_ring_stackable = CVAR_INIT ("vanillaboost_ring_stackable", "On", CV_NETVAR|CV_CHEAT|CV_GUARD, CV_OnOff, NULL);
 
 consvar_t cv_kartstacking_ssmt_speedboost = CVAR_INIT ("vanillaboost_ssmt_speedboost", "0.1", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
-consvar_t cv_kartstacking_ssmt_accelboost = CVAR_INIT ("vanillaboost_ssmt_accelboost", "65535.0", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
-consvar_t cv_kartstacking_ssmt_handleboost = CVAR_INIT ("vanillaboost_ssmt_handleboost", "0", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
+consvar_t cv_kartstacking_ssmt_accelboost = CVAR_INIT ("vanillaboost_ssmt_accelboost", "10.0", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
+consvar_t cv_kartstacking_ssmt_handleboost = CVAR_INIT ("vanillaboost_ssmt_handleboost", "0.25", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
 
 consvar_t cv_kartstacking_slope_decay = CVAR_INIT ("vanillaboost_slope_decay", "0.004", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
 consvar_t cv_kartstacking_slope_brakemod = CVAR_INIT ("vanillaboost_slope_brakemod", "0.01", CV_NETVAR|CV_CHEAT|CV_FLOAT|CV_GUARD, CV_Unsigned, NULL);
diff --git a/src/g_game.c b/src/g_game.c
index 4e5bc2cc1..853357cbb 100644
--- a/src/g_game.c
+++ b/src/g_game.c
@@ -1540,14 +1540,17 @@ void G_BuildTiccmd(ticcmd_t *cmd, INT32 realtics, UINT8 ssplayer)
 			forward += (value * MAXPLMOVE) / JOYAXISRANGE;
 		}
 
-		if (player->sneakertimer)
+		if (player->sneakertimer || player->ssmtboost)
 			forward = MAXPLMOVE;	// 50
 
 		value = G_PlayerInputAnalog(forplayer, gc_brake, false, DEADZONE_BUTTON);
 		if (value != 0)
 		{
 			cmd->buttons |= BT_BRAKE;
-			forward -= (value * 25) / JOYAXISRANGE;
+			if (!(player->pflags & PF_CHARGINGSSMT))
+			{
+				forward -= (value * 25) / JOYAXISRANGE;
+			}
 		}
 
 		// But forward/backward IS used for aiming.
diff --git a/src/k_kart.c b/src/k_kart.c
index 96e9201f2..f8b75534f 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -357,6 +357,10 @@ void K_RegisterKartStuff(void)
 	CV_RegisterVar(&cv_kartstacking_ring_handleboost);
 	CV_RegisterVar(&cv_kartstacking_ring_stackable);
 
+	CV_RegisterVar(&cv_kartstacking_ssmt_speedboost);
+	CV_RegisterVar(&cv_kartstacking_ssmt_accelboost);
+	CV_RegisterVar(&cv_kartstacking_ssmt_handleboost);
+
 	CV_RegisterVar(&cv_kartstacking_slope_decay);
 	CV_RegisterVar(&cv_kartstacking_slope_brakemod);
 	CV_RegisterVar(&cv_kartstacking_slope_speedboost_max);
@@ -1050,11 +1054,6 @@ static void K_UpdateOffroad(player_t *player)
 					offroadstrength *= 2;
 				}
 			}
-			else if (player->pflags & PF_CHARGINGSSMT)
-			{
-				offroad = offroad/2;
-				offroadstrength = offroadstrength/2;
-			}
 
 			player->offroad += offroad;
 		}
@@ -2174,7 +2173,7 @@ boolean K_ApplyOffroad(const player_t *player)
 
 	if (player->hyudorotimer || sneakertimer ||
 		(cv_kartbubble_boost_offroadignore.value && player->bubbleboost) ||
-		player->ssmtboost)
+		player->ssmtboost || (player->pflags & PF_CHARGINGSSMT))
 		return false;
 	return true;
 }
@@ -3108,7 +3107,7 @@ SINT8 K_GetForwardMove(const player_t *player)
 		player->flipovertimer) // pw_introcam?
 	{
 		forwardmove = 0;
-		if (player->sneakertimer || player->ssmtboost)
+		if (player->sneakertimer)
 			forwardmove = MAXPLMOVE;
 	}
 
@@ -9632,14 +9631,18 @@ static void K_KartSlipdash(player_t *player, boolean onground)
 
 static void K_StandStillMiniTurbo(player_t *player, boolean onground)
 {
-	if (player->speed <= 8*player->mo->scale && onground)
+	if (player->speed <= 12*player->mo->scale && onground && leveltime > starttime)
 	{
-		if (player->cmd.buttons & BT_ACCELERATE|BT_BRAKE)
+		if ((player->cmd.buttons & BT_ACCELERATE) && (player->cmd.buttons & BT_BRAKE))
 		{
 			player->pflags |= PF_CHARGINGSSMT;
-			player->forcedtopspeed = 8*FRACUNIT;
+			player->forcedtopspeed = 12*FRACUNIT;
 			player->ssmtcharge += 1;
-			K_SpawnDashDustRelease(player, true);
+			if (leveltime % 8 == 0)
+			{
+				K_SpawnDashDustRelease(player, true);
+				S_StartSound(player->mo, sfx_s224);
+			}
 			if (player->ssmtcharge >= 3*TICRATE/2)
 			{
 				K_SpawnBoostTrail(player);
@@ -9653,7 +9656,10 @@ static void K_StandStillMiniTurbo(player_t *player, boolean onground)
 			player->forcedtopspeed = 0;
 			if (player->ssmtcharge >= 3*TICRATE/2)
 			{
-				player->ssmtboost = TICRATE;
+				player->outruntime = TICRATE/4;
+				player->ssmtboost = TICRATE/2;
+				player->tiregrease = TICRATE;
+				S_StartSound(player->mo, sfx_s23c);
 			}
 			player->ssmtcharge = 0;
 
@@ -11117,7 +11123,7 @@ void K_MoveKartPlayer(player_t *player, boolean onground)
 	// Quick Turning
 	// You can't turn your kart when you're not moving.
 	// So now it's time to burn some rubber!
-	if (player->speed < 2 && leveltime > starttime && (player->cmd.buttons & BT_ACCELERATE|BT_BRAKE) && player->cmd.turning != 0)
+	if (player->speed < 2 && leveltime > starttime && (player->cmd.buttons & BT_ACCELERATE) && (player->cmd.buttons & BT_BRAKE) && player->cmd.turning != 0)
 	{
 		if (leveltime % 8 == 0)
 			S_StartSound(player->mo, sfx_s224);