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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > NOOB question - JB4 n55



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      07-12-2013, 03:55 PM   #1
wwc310
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NOOB question - JB4 n55

will there be a stage 3 jb4 for the n55?
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JB4 Stage 2
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      07-12-2013, 07:43 PM   #2
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Very doubtful, the stage 2 tune already maxes out the twin scroll turbo. There wouldn't be any need for another stage on stock turbos.
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      08-20-2013, 09:13 PM   #3
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Quote:
Originally Posted by avol3xo View Post
Very doubtful, the stage 2 tune already maxes out the twin scroll turbo. There wouldn't be any need for another stage on stock turbos.
Well what about when the turbo upgrades are out. I think then there will be a stage 3. My 2 cents
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      08-20-2013, 09:16 PM   #4
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Very doubtful, the stage 2 tune already maxes out the twin scroll turbo. There wouldn't be any need for another stage on stock turbos.
Well what about when the turbo upgrades are out. I think then there will be a stage 3. My 2 cents
Yeah whenever they are ready it's possible, but I think they would be more likely to release it as an add on to the current stage 2 tune. It's possible, I guess we'll have to see where the demand for the turbo upgrade stands upon release
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      08-20-2013, 10:22 PM   #5
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the answer is yes both burger and Cobb will have tunes for turbo upgrades... JB S3 will most likely come out first... date unknown, pending T-builds from RB and VTT
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      08-21-2013, 02:33 PM   #6
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Part of the ISO is for larger turbos. There will not be a stage 3.
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      08-21-2013, 04:55 PM   #7
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Part of the ISO is for larger turbos. There will not be a stage 3.
So in that case I have full intentions of doing the turbo upgrade I should just wait until a new JB is released?
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      08-21-2013, 09:42 PM   #8
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Very doubtful, the stage 2 tune already maxes out the twin scroll turbo. There wouldn't be any need for another stage on stock turbos.
What's the power output of stage 2 that maxes out the stock turbo?
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      08-21-2013, 09:48 PM   #9
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Very doubtful, the stage 2 tune already maxes out the twin scroll turbo. There wouldn't be any need for another stage on stock turbos.
What's the power output of stage 2 that maxes out the stock turbo?
The power output depends on the type of fuel you're running and other mods. The highest output I've seen with full bolt on, meth, and race gas was around 390whp
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      08-22-2013, 08:01 AM   #10
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So in that case I have full intentions of doing the turbo upgrade I should just wait until a new JB is released?
No, ISO is already out. All other changes to the JB4 will be via firmware. There will not be a stage 3. You do not need a larger turbo to run the JB4.
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      09-09-2013, 09:19 PM   #11
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the answer is yes both burger and Cobb will have tunes for turbo upgrades... JB S3 will most likely come out first... date unknown, pending T-builds from RB and VTT
cobb will only have it for the 2011 n55 ... cuz they are slow and lame.
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      10-11-2013, 05:36 PM   #12
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so best shot for N55 is JB4 stage 2 with stock turbos? not the cobb
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