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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 > JB4 firmware update.



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      08-13-2012, 04:49 PM   #1
kpxshorty
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JB4 firmware update.

i just update jb4 firmware.
and now my car is flying!
map5.
91gas
full cat back
DCI
JB4
air duct

im pushing almost 17~18 psi.
before update. 13~15psi.

is this normal or i did something wrong??
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      08-13-2012, 04:50 PM   #2
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i dont thinkyou did anything wrong if your running 18psi. Sounds good to me lol
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      08-13-2012, 04:51 PM   #3
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18psi with 91 on map 5? You sure?
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      08-13-2012, 04:56 PM   #4
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Log please? Map 5 auto tunes 13.5-17psi.... and with no DPs/fmic/meth or e85, somethings wrong
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      08-13-2012, 05:17 PM   #5
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what...
on 91 with catless downpipes and jb4 im only hitting like 15psi
with e85 though its a different story and i get up to around 17 psi >=D
e85 <33333
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      08-13-2012, 05:39 PM   #6
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Quote:
Originally Posted by kkashanchi View Post
what...
on 91 with catless downpipes and jb4 im only hitting like 15psi
with e85 though its a different story and i get up to around 17 psi >=D
e85 <33333
That is normal. I am seeing the same thing on mine. If you post up your logs it would be more helpful though to say if it's normal. Also I recommend sending Terry a log to have him bless off on it if you have not already.
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      08-13-2012, 06:11 PM   #7
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If you run E85, up your Max Boost target from 17 to 18 (Terry himself said so) when you run map 5.
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