JB4 piggy back messing with Power and Sound Exhaust

MPR 151 · 06-04-2021, 06:32 PM

Pre info:
2018 340i
Power and a Sound Package
JB4 piggy back tuner with blue tooth
VRSF downpipe
VRSF Charge pipe

I installed the JB4 back in February 2021, everything was going great running map 5 until mid May.

At first the sound of the exhausted seemed to be stuck in sport mode. Now it's stuck in comfort. If I turn the JB4 off (map 0) everything works just fine, but the second I turn on any map the exhaust goes into quiet mode.

I can drive down the highway in map 0 with the car in sport mode, loud as hell, pop it into map 5 and the car exhaust sounds like I'm in comfort mode again.

As far as I can tell everything else associated with sport mode aren't affected. Just the flanges in the exhaust.

Has anyone ever encounter this?

_N54 · 06-04-2021, 06:37 PM

Honestly your best bet is to post on N54tech or directly email them for quicker support.

mike@x-ph.com · 06-05-2021, 08:48 AM

Check the Jb4 setting, you might have the valves set to close when the Jb4 is on

MPR 151 · 11-09-2021, 02:26 PM

*SOLVED*

Turns out it's a setting you can only do in the car. You have to hold down the button on the end of the blinker for 3 seconds to scroll through

"Always Open" which blinks the left blinker
"Normal Operation" Which blinks both blinkers
"Always Closed" Which blinks the right blinker

Some how mine got set on Always open which was driving my wife nuts that the car was loud as hell in comfort mode.

06-04-2021, 06:32 PM	#1
MPR 151 New Member 0 Rep 5 Posts Drives: BMW 3401 Join Date: Jun 2021 Location: Houston iTrader: (0)	JB4 piggy back messing with Power and Sound Exhaust Pre info: 2018 340i Power and a Sound Package JB4 piggy back tuner with blue tooth VRSF downpipe VRSF Charge pipe I installed the JB4 back in February 2021, everything was going great running map 5 until mid May. At first the sound of the exhausted seemed to be stuck in sport mode. Now it's stuck in comfort. If I turn the JB4 off (map 0) everything works just fine, but the second I turn on any map the exhaust goes into quiet mode. I can drive down the highway in map 0 with the car in sport mode, loud as hell, pop it into map 5 and the car exhaust sounds like I'm in comfort mode again. As far as I can tell everything else associated with sport mode aren't affected. Just the flanges in the exhaust. Has anyone ever encounter this?
	Appreciate 0 Tweet Quote

06-04-2021, 06:37 PM	#2
_N54 Captain 300 Rep 884 Posts Drives: 335d Join Date: Mar 2020 Location: USA iTrader: (0)	Honestly your best bet is to post on N54tech or directly email them for quicker support. __________________ 2013 335is - sold 2011 335d
	Appreciate 0 Quote

06-05-2021, 08:48 AM	#3
mike@x-ph.com BimmerPost Supporting Vendor 24186 Rep 190,777 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Check the Jb4 setting, you might have the valves set to close when the Jb4 is on __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
	Appreciate 0 Quote

11-09-2021, 02:26 PM	#4
MPR 151 New Member 0 Rep 5 Posts Drives: BMW 3401 Join Date: Jun 2021 Location: Houston iTrader: (0)	SOLVED Turns out it's a setting you can only do in the car. You have to hold down the button on the end of the blinker for 3 seconds to scroll through "Always Open" which blinks the left blinker "Normal Operation" Which blinks both blinkers "Always Closed" Which blinks the right blinker Some how mine got set on Always open which was driving my wife nuts that the car was loud as hell in comfort mode.
	Appreciate 0 Quote