diff --git a/build_uf2/Pico_Game_Controller.uf2 b/build_uf2/Pico_Game_Controller.uf2
index 6147fca..a23cc81 100644
Binary files a/build_uf2/Pico_Game_Controller.uf2 and b/build_uf2/Pico_Game_Controller.uf2 differ
diff --git a/src/pico_game_controller.c b/src/pico_game_controller.c
index f3eddf2..c2d89b7 100644
--- a/src/pico_game_controller.c
+++ b/src/pico_game_controller.c
@@ -220,7 +220,13 @@ void init() {
   }
 
   // RGB Mode Switching
-  ws2812b_mode = &ws2812b_color_cycle_v5;
+  // default to color cycle mode unless BT-B pressed when plugging in
+  // (turbocharger mode)
+  if (gpio_get(SW_GPIO[1])) {
+    ws2812b_mode = &ws2812b_color_cycle_v5;
+  } else {
+    ws2812b_mode = &turbocharger_color_cycle;
+  }
 
   // Debouncing Mode
   debounce_mode = &debounce_eager;
diff --git a/src/rgb/turbocharger.c b/src/rgb/turbocharger.c
index 4b92197..0f7b5c2 100644
--- a/src/rgb/turbocharger.c
+++ b/src/rgb/turbocharger.c
@@ -13,18 +13,13 @@
  * - Decay the counter
  * 
  * Curent values are tuned for
- * - Lights sampled at 200 Hz
+ * - Lights sampled at 31.25 Hz (every 32ms)
  * - 0.1 rotations for lights to activate
- * - Lighting areas take 0.75s to make one full rotation
- * - Movement takes 0.5s to decay to stop
- * - Fade out takes another 0.2s samples to disappear
+ * - Lighting areas take 1s to make one full rotation
+ * - Movement takes 1s to decay to stop
+ * - Fade out takes another 0.5s to disappear
  * 
- * LEDs are positioned as:
- * - 0, 1 as dummy leds on top of controller
- * - 2-6 LEDs on right edge, top to bottom
- * - 7-9 as dummy leds on bottom of controller
- * - 10-14 LEDs on left edge, bottom to top
- * - 15 as dummy led on top of controller
+ * See turbo_led_base_pos for led positions
  * 
  * Lighting areas start at position 0 and will light up the 3 nearest LEDs.
  * By strategically positioning led 0 at the top, this avoids lighting areas
@@ -33,11 +28,15 @@
 
 #define TURBO_LIGHTS_CLAMP 0.1f
 #define TURBO_LIGHTS_THRESHOLD 0.05f
-#define TURBO_LIGHTS_DECAY 0.0005f
-#define TURBO_LIGHTS_VEL 0.12f
-#define TURBO_LIGHTS_MAX (WS2812B_LED_SIZE + 6.0f)
-#define TURBO_LIGHTS_FADE 40
-#define TURBO_LIGHTS_FADE_VEL 0.025f
+#define TURBO_LIGHTS_DECAY 0.003f
+#define TURBO_LIGHTS_VEL 0.5f
+#define TURBO_LIGHTS_MAX 16.0f
+#define TURBO_LIGHTS_FADE 16
+#define TURBO_LIGHTS_FADE_VEL 0.0625f
+#define EPS 0.0001f
+
+#define TURBO_LIGHTS_OFFSET ((SW_GPIO_SIZE - 2) * 2)
+#define TURBO_LIGHTS_N (WS2812B_LED_SIZE - TURBO_LIGHTS_OFFSET)
 
 int i_clamp(int d, int min, int max) {
   const int t = d < min ? min : d;
@@ -62,28 +61,49 @@ uint32_t turbo_prev_enc_val[ENC_GPIO_SIZE];
 float turbo_cur_enc_val[ENC_GPIO_SIZE];
 float turbo_lights_pos[ENC_GPIO_SIZE];
 float turbo_lights_brightness[ENC_GPIO_SIZE];
-int turbo_lights_idle[ENC_GPIO_SIZE];
+
+float turbo_led_base_pos[TURBO_LIGHTS_N] = {
+  // https://cdn.discordapp.com/attachments/870171955175759882/1046955855448375406/Pocket-SDVX-Pico-v5c.png
+  // 4x bottom right, top to bottom
+  4, 4.66f, 5.33f, 6,
+  // 1x right knob
+  3,
+  // 3x top right, top to bottom
+  2, 2, 2,
+  // 3x top left, top to bottom
+  14, 14, 14,
+  // 1x left knob
+  13,
+  // 4x bottom left, top to bottom
+  12, 11.33f, 10.66f, 10,
+  // 2x bottom logo
+  8, 8
+};
+float turbo_start_pos[ENC_GPIO_SIZE] = {13, 3};
 
 void turbocharger_color_cycle(uint32_t unused) {
+  // calculate turbocharger vars
   for (int i = 0; i < ENC_GPIO_SIZE; i++) {
-    int enc_delta = (enc_val[i] - turbo_prev_enc_val[i]) * (ENC_REV[i] ? 1 : -1);
+    int enc_delta = (enc_val[i] - turbo_prev_enc_val[i]) * (ENC_REV[i] ? -1 : 1);
     turbo_prev_enc_val[i] = enc_val[i];
     turbo_cur_enc_val[i] = f_clamp(turbo_cur_enc_val[i] + (float)(enc_delta) / ENC_PULSE, -TURBO_LIGHTS_CLAMP, TURBO_LIGHTS_CLAMP);
 
     if (turbo_cur_enc_val[i] < -TURBO_LIGHTS_THRESHOLD) {
-      turbo_lights_idle[i] = 0;
       turbo_lights_pos[i] += TURBO_LIGHTS_VEL;
       turbo_lights_brightness[i] = 1.0f;
     } else if (turbo_cur_enc_val[i] > TURBO_LIGHTS_THRESHOLD) {
-      turbo_lights_idle[i] = 0;
       turbo_lights_pos[i] -= TURBO_LIGHTS_VEL;
       turbo_lights_brightness[i] = 1.0f;
     } else {
-      turbo_lights_idle[i]++;
-      if (turbo_lights_idle[i] > TURBO_LIGHTS_FADE) {
-        turbo_lights_pos[i] = 0;
-      } else {
-        turbo_lights_brightness[i] = f_clamp(turbo_lights_brightness[i] - TURBO_LIGHTS_FADE_VEL, 0.0f, 1.0f);
+      turbo_lights_brightness[i] = f_clamp(turbo_lights_brightness[i] - TURBO_LIGHTS_FADE_VEL, 0.0f, 1.0f);
+      if (turbo_lights_brightness[i] < EPS) {
+        turbo_lights_pos[i] = turbo_start_pos[i];
+      }
+
+      if (turbo_cur_enc_val[i] < -EPS) {
+        turbo_lights_pos[i] += TURBO_LIGHTS_VEL * turbo_lights_brightness[i];
+      } else if (turbo_cur_enc_val[i] > EPS) {
+        turbo_lights_pos[i] -= TURBO_LIGHTS_VEL * turbo_lights_brightness[i];
       }
     }
 
@@ -96,15 +116,64 @@ void turbocharger_color_cycle(uint32_t unused) {
     }
   }
 
-  for (int i = 0; i < WS2812B_LED_SIZE; i++) {
-    float pos = 2.0f + i + (i >= WS2812B_LED_SIZE / 2 ? 3.0f : 0.0f);
-    float l_strength = (1.0f - f_clamp(f_abs(turbo_lights_pos[0] - pos), 0.0f, 2.0f) / 2) * turbo_lights_brightness[0];
-    float r_strength = (1.0f - f_clamp(f_abs(turbo_lights_pos[1] - pos), 0.0f, 2.0f) / 2) * turbo_lights_brightness[1];
+  // base code from color cycle v5
+  uint64_t latest_switch_ts = sw_timestamp[0];
+  for (int i = 1; i < SW_GPIO_SIZE; i++)
+    if (latest_switch_ts < sw_timestamp[i]) latest_switch_ts = sw_timestamp[i];
+  if (time_us_64() > latest_switch_ts + timeout_us) {  // timed out
+    for (int i = 0; i < WS2812B_LED_SIZE; i++) ws2812b_data[i] = COLOR_BLACK;
+  } else {
+    /* Switches */
+    for (int i = 0; i < SW_GPIO_SIZE - 3; i++) {
+      if (time_us_64() - reactive_timeout_timestamp >= REACTIVE_TIMEOUT_MAX) {
+        if ((report.buttons >> i) % 2 == 1) {
+          ws2812b_data[2 * i + 2] = SW_COLORS[i + 1];
+        } else {
+          ws2812b_data[2 * i + 2] = COLOR_BLACK;
+        }
+      } else {
+        if (lights_report.lights.buttons[i] == 0) {
+          ws2812b_data[2 * i + 2] = COLOR_BLACK;
+        } else {
+          ws2812b_data[2 * i + 2] = SW_COLORS[i + 1];
+        }
+      }
+    }
 
-    put_pixel(urgb_u32(
-      i_clamp(l_strength * 70 + r_strength * 250, 0, 255),
-      i_clamp(l_strength * 230 + r_strength * 60, 0, 255),
-      i_clamp(l_strength * 250 + r_strength * 200, 0, 255)
-    ));
+    /* start button sw_val index is offset by two with respect to LED_GPIO */
+    if (time_us_64() - reactive_timeout_timestamp >= REACTIVE_TIMEOUT_MAX) {
+      if ((report.buttons >> (SW_GPIO_SIZE - 1)) % 2 == 1) {
+        ws2812b_data[0] = SW_COLORS[0];
+      } else {
+        ws2812b_data[0] = COLOR_BLACK;
+      }
+    } else {
+      if (lights_report.lights.buttons[SW_GPIO_SIZE - 3] == 0) {
+        ws2812b_data[0] = COLOR_BLACK;
+      } else {
+        ws2812b_data[0] = SW_COLORS[0];
+      }
+    }
+    /* Switch Labels */
+    for (int i = 0; i < SW_GPIO_SIZE - 2; i++) {
+      ws2812b_data[2 * i + 1] = SW_LABEL_COLORS[i];
+    }
+
+    /* peripheral turbocharger leds */
+    for (int i = 0; i < TURBO_LIGHTS_N; i++) {
+      float pos = turbo_led_base_pos[i];
+      float l_strength = (1.0f - f_clamp(f_abs(turbo_lights_pos[0] - pos), 0.0f, 2.0f) / 2) * turbo_lights_brightness[0];
+      float r_strength = (1.0f - f_clamp(f_abs(turbo_lights_pos[1] - pos), 0.0f, 2.0f) / 2) * turbo_lights_brightness[1];
+
+      ws2812b_data[TURBO_LIGHTS_OFFSET + i].r = i_clamp(l_strength * 70 + r_strength * 250, 0, 255);
+      ws2812b_data[TURBO_LIGHTS_OFFSET + i].g = i_clamp(l_strength * 230 + r_strength * 60, 0, 255);
+      ws2812b_data[TURBO_LIGHTS_OFFSET + i].b = i_clamp(l_strength * 250 + r_strength * 200, 0, 255);
+    }
+  }
+
+  // put pixels
+  for (int i = 0; i < WS2812B_LED_SIZE; ++i) {
+    put_pixel(
+        urgb_u32(ws2812b_data[i].r, ws2812b_data[i].g, ws2812b_data[i].b));
   }
 }