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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB+ and JB4



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      05-18-2011, 09:21 PM   #1
iverson3yoo
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JB+ and JB4

Can you use JB+ and JB4 (2,3, etc.) together? Is it better? More power?
Tried searching, if someone could give me some insight I'd be grateful. Thanks in advanced.
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      05-18-2011, 09:57 PM   #2
BillLee
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      05-18-2011, 09:59 PM   #3
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Damn why not?
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      05-18-2011, 10:01 PM   #4
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There is no benefit to stacking the JB+ on top of the JB4 because the JB4 already has the ability to move between different boost mappings.
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      05-18-2011, 10:03 PM   #5
Brey335i
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In other words: It would be much cheaper and safer for you to simply switch to a more aggressive map on the JB4 than buying an additional JB+. You would also be at risk of exceeding the car's safe boost levels
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      05-18-2011, 10:45 PM   #6
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What is JB+?
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      05-18-2011, 10:58 PM   #7
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Quote:
Originally Posted by E90Vader View Post
What is JB+?
BMS tune. Very quick to install and cheap. Find it on their website
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      05-18-2011, 11:36 PM   #8
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      05-18-2011, 11:43 PM   #9
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Lol no!!
People stack the jb plus with a flash tune but the jb4 is a piggyback and it lets you choose how mjch boost you want to run so its useless and stupid to stack both...
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      05-19-2011, 08:45 AM   #10
Mike@N54Tuning.com
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No point

Just run the JB4....

Mike
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      05-19-2011, 09:35 AM   #11
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Jb

I read the install instruction for the jb but was still a little confused. Is it really as easy as people are saying it is and what real gains are people seeing on a rather stock n54
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      05-19-2011, 10:33 AM   #12
Mike@N54Tuning.com
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Quote:
Originally Posted by jclausing1 View Post
I read the install instruction for the jb but was still a little confused. Is it really as easy as people are saying it is and what real gains are people seeing on a rather stock n54
It will completely transform the car. Install is pretty simple. I would budget around 45min time. Follow the instructions and take your time and it should go very smoothly

A lot of my customers run the JB4 on a stock car and are very impressed with the gains.

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      05-19-2011, 10:40 AM   #13
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I didn't know you could adjust the boost with the JB4, I thought the maps were preset and they automatically configured to what your car has installed. Nonetheless, I was always gonna buy a JB4, but I recently came across all these JB+ for like >$100 so this question came to my mind. Thanks for all the input. Anyways JB4 FTW.
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