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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 > n00b jb4 questions -_-



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      02-21-2012, 03:39 PM   #1
MasterWang
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n00b jb4 questions -_-

Have been researching about the jb4 for my n54 335i.
What is the difference between jb4 stage 2 and stage 3?
Is stage 2 only for n55?
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      02-21-2012, 05:13 PM   #2
jrsniper12453
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For n54 there is just one JB4. Get it and usb cable and you're good to go.
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      02-21-2012, 05:53 PM   #3
abhishriv
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I think your're getting confused between "maps" and "stages" .. there is only a single JB4 for the N54. but the JB4 comes with a number of different "maps" (all included) which you can use depending on what other mods you have and how aggressive you want to run the tune.
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      02-21-2012, 06:03 PM   #4
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N54 has JB4 "stage 3". There is also has Jb1 "stage1", and Jb+ "stage 2" which are not JB4.

N55 has stage 1 not JB4 and Stage 2(Jb4).

If you need any help I'm a PM away.
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      02-21-2012, 06:14 PM   #5
Beemw335
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Is jb1 still sold??

Op you want a jb4, forget the jb+ or look into a procede or a cobb accessport.
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      02-21-2012, 10:14 PM   #6
MasterWang
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Thanks for all the info. I knew about the maps but was just confused on the stage 2 vs 3.
I only have injen dci right now..so should I just run map 1? Or can I run map 2 with just dci?
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