Car Quieter w/ JB4?

[hexone]

Hey Guys,

I want to preface this by saying this all might just be in my head, but I really feel that my car got a lot quieter once I updated the firmware of my JB4. One thing that could also be the cause is that I also reattached my electronic valve control at the same time.

I turned on and off the active sound to see if that was causing it, but I don't believe that is it. I also have the default wastegate position set to 0, so I don't think it is that. The only engine mods I have are intake and the JB4; everything else is stock.

Any suggestions on why it might sound a lot quieter with the firmware update compared to the original firmware installed? Here are my firmware settings before the update: Interface ver: 3/1/16. firmware ver: 4/0//5

I updated to the new JB4_M3_OBDII_1_6.hex file.

As I mentioned, it might be all in my head, but I really feel that the car is a lot quieter than it used to be. Let me know your thoughts.

Thanks!

[chewbakam4]

Did you try emailing BMS or asking on n54tech about it?

[hexone]

Originally Posted by chewbakam4

Did you try emailing BMS or asking on n54tech about it?

Not yet, I just noticed it this morning and they are in the westcoast so it is way too early for them If I can't get an answer in the community I will definitely be emailing them.

[chewbakam4]

BMS support is killer. I'm sure Terry will get back to you in a heatbeat.

[mike@x-ph.com]

As mentioned above contact BMS, that being said i highly doubt JB4 has anything to do with the car being quieter

[Mike@N54Tuning.com]

Originally Posted by hexone

Hey Guys,

I want to preface this by saying this all might just be in my head, but I really feel that my car got a lot quieter once I updated the firmware of my JB4. One thing that could also be the cause is that I also reattached my electronic valve control at the same time.

I turned on and off the active sound to see if that was causing it, but I don't believe that is it. I also have the default wastegate position set to 0, so I don't think it is that. The only engine mods I have are intake and the JB4; everything else is stock.

Any suggestions on why it might sound a lot quieter with the firmware update compared to the original firmware installed? Here are my firmware settings before the update: Interface ver: 3/1/16. firmware ver: 4/0//5

I updated to the new JB4_M3_OBDII_1_6.hex file.

As I mentioned, it might be all in my head, but I really feel that the car is a lot quieter than it used to be. Let me know your thoughts.

Thanks!

Check you exhaust valve settings? Maybe they are forced closed.

Other then that the JB can't change the sound of the car.

Mike