diff --git a/apps/bttester/src/uart_pipe.c b/apps/bttester/src/uart_pipe.c
index 971acdc6d..e774570c9 100644
--- a/apps/bttester/src/uart_pipe.c
+++ b/apps/bttester/src/uart_pipe.c
@@ -40,12 +40,12 @@ struct uart_pipe_ring {
 
 static struct uart_dev *uart_dev;
 static struct uart_pipe_ring cr_tx;
-static uint8_t cr_tx_buf[2048];
+static uint8_t cr_tx_buf[MYNEWT_VAL(BTTESTER_BTP_DATA_SIZE_MAX)];
 typedef void (*console_write_char)(struct uart_dev*, uint8_t);
 static console_write_char write_char_cb;
 
 static struct uart_pipe_ring cr_rx;
-static uint8_t cr_rx_buf[2048];
+static uint8_t cr_rx_buf[MYNEWT_VAL(BTTESTER_BTP_DATA_SIZE_MAX)];
 static volatile bool uart_console_rx_stalled;
 
 struct os_event rx_ev;
diff --git a/apps/bttester/syscfg.yml b/apps/bttester/syscfg.yml
index c420e0398..7b4b81352 100644
--- a/apps/bttester/syscfg.yml
+++ b/apps/bttester/syscfg.yml
@@ -21,11 +21,11 @@
 syscfg.defs:
     BTTESTER_PIPE_UART:
         description: 'Set communication pipe to UART'
-        value: 0
+        value: 1
 
     BTTESTER_PIPE_RTT:
         description: 'Set communication pipe to RTT'
-        value: 1
+        value: 0
 
     BTTESTER_RTT_BUFFER_NAME:
         description: Bttester rtt pipe buffer name
@@ -53,7 +53,7 @@ syscfg.defs:
 
     BTTESTER_DEBUG:
         description: Enable debug logging
-        value: 0
+        value: 1
 
 syscfg.vals:
     OS_MAIN_STACK_SIZE: 12444