Difference in jb4

mtraaan · 03-31-2013, 10:09 AM

So I recently bought a jb4 from a guy. Real good guy and seems to know what he's talkin about. He even installed it for me. He said he bought it last aug. aug 2012. He says its a jb4 stage 2. But I don't see anything other than stage 3 for the n54. I mess with it and drove it around. Definitely feel amazing gains. But how do I know that I didn't get ripped off for the jb+?

m_fife · 03-31-2013, 11:13 AM

When he installed it did he remove the air box? If so he probably installed a JB+, if he removed the cover for the DME on the passenger side up by the firewall you have a JB4.

GmoBmw · 03-31-2013, 11:22 AM

Quote:

Originally Posted by igotag

When he installed it did he remove the air box? If so he probably installed a JB+, if he removed the cover for the DME on the passenger side up by the firewall you have a JB4.

This

Beemw335 · 03-31-2013, 12:25 PM

Press your volume and channel button down at the same time...if nothing happenes then its not a jb4.
Oh and stage 2...maybe its a jb2????

mtraaan · 03-31-2013, 12:45 PM

Yeah I can push down the 2 buttons and change maps. And we removed my oem intake when installing the charge pipe. But I saw him put in all the wires in the ecu. But he kept saying its a jb4 stage 2 and I just can't find anything on a stage 2 other than on the website it says stage 2 is the jb+

E90Company · 03-31-2013, 12:50 PM

And your car is an N54? The N55's JB4 is called stage 2. If you can change maps with the steering wheel I wouldn't worry

mtraaan · 03-31-2013, 01:11 PM

Alright thanks for the info!

03-31-2013, 10:09 AM	#1
mtraaan Enlisted Member 2 Rep 37 Posts Drives: Black 135i Join Date: Apr 2012 Location: HTx iTrader: (0)	Difference in jb4 So I recently bought a jb4 from a guy. Real good guy and seems to know what he's talkin about. He even installed it for me. He said he bought it last aug. aug 2012. He says its a jb4 stage 2. But I don't see anything other than stage 3 for the n54. I mess with it and drove it around. Definitely feel amazing gains. But how do I know that I didn't get ripped off for the jb+?
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03-31-2013, 11:13 AM	#2
m_fife First Lieutenant 123 Rep 339 Posts Drives: 2018 M5 Join Date: Jan 2013 Location: USA iTrader: (0)	When he installed it did he remove the air box? If so he probably installed a JB+, if he removed the cover for the DME on the passenger side up by the firewall you have a JB4.
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03-31-2013, 12:25 PM	#4
Beemw335 Colonel 62 Rep 2,013 Posts Drives: 335i Join Date: Mar 2011 Location: My car is my home iTrader: (2)	Press your volume and channel button down at the same time...if nothing happenes then its not a jb4. Oh and stage 2...maybe its a jb2????
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03-31-2013, 12:45 PM	#5
mtraaan Enlisted Member 2 Rep 37 Posts Drives: Black 135i Join Date: Apr 2012 Location: HTx iTrader: (0)	Yeah I can push down the 2 buttons and change maps. And we removed my oem intake when installing the charge pipe. But I saw him put in all the wires in the ecu. But he kept saying its a jb4 stage 2 and I just can't find anything on a stage 2 other than on the website it says stage 2 is the jb+
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03-31-2013, 12:50 PM	#6
E90Company Major General 194 Rep 6,136 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	And your car is an N54? The N55's JB4 is called stage 2. If you can change maps with the steering wheel I wouldn't worry
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03-31-2013, 01:11 PM	#7
mtraaan Enlisted Member 2 Rep 37 Posts Drives: Black 135i Join Date: Apr 2012 Location: HTx iTrader: (0)	Alright thanks for the info!
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