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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 > JB4 on 335is DCT



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      04-18-2012, 05:39 PM   #1
Mike335is
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JB4 on 335is DCT

I have been thinking about adding a JB4 to my 335is, I'm not planning on adding any more upgrades. Is it safe? Do i have to worry when i take it to the dealer for service? What kind of gain will i expect to get? Does it effect the power band? Can the DCT handle the upgrade with no issues? I would really appreciate all your comments
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      04-18-2012, 05:56 PM   #2
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Quote:
Originally Posted by Mike335is View Post
I have been thinking about adding a JB4 to my 335is, I'm not planning on adding any more upgrades. Is it safe? Do i have to worry when i take it to the dealer for service? What kind of gain will i expect to get? Does it effect the power band? Can the DCT handle the upgrade with no issues? I would really appreciate all your comments

If it is just a tune, go for it! It is very easy to take on and off, Jut remember to take off the tune before taking it in for service. Yes it will add quite a bit of power. You will most def enjoy it. The dct could handle the tune only power.
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      04-18-2012, 06:01 PM   #3
eyim1988
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and by the way the 335is is the n54 engine.
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      04-18-2012, 06:48 PM   #4
Mike335is
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Quote:
Originally Posted by eyim1988
Quote:
Originally Posted by Mike335is View Post
I have been thinking about adding a JB4 to my 335is, I'm not planning on adding any more upgrades. Is it safe? Do i have to worry when i take it to the dealer for service? What kind of gain will i expect to get? Does it effect the power band? Can the DCT handle the upgrade with no issues? I would really appreciate all your comments

If it is just a tune, go for it! It is very easy to take on and off, Jut remember to take off the tune before taking it in for service. Yes it will add quite a bit of power. You will most def enjoy it. The dct could handle the tune only power.
What kind of numbers will i get?
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      04-18-2012, 06:52 PM   #5
eyim1988
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im guessing somewhere around 345-350 whp? the 335is dynos around 310-315 whp stock.
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      04-18-2012, 08:33 PM   #6
Mike335is
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Sound about right, what about the torque??
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      04-20-2012, 08:22 PM   #7
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nice
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      04-23-2012, 10:57 AM   #8
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Quote:
Originally Posted by Mike335is View Post
I have been thinking about adding a JB4 to my 335is, I'm not planning on adding any more upgrades. Is it safe? Do i have to worry when i take it to the dealer for service? What kind of gain will i expect to get? Does it effect the power band? Can the DCT handle the upgrade with no issues? I would really appreciate all your comments
Just remember the 335is has the N54 engine so you need the N54 JB4 for that I have a few customers with the IS running the tune and they love it.

Mike
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