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      06-23-2014, 01:33 PM   #24
wmandra
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Drives: 2010 328i, 2014 Z4
Join Date: Jan 2010
Location: NJ, USA

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Quote:
Originally Posted by SnMalone View Post
How does the jb4 together with the exhaust upgrade feel compared to stock? did you dyno the the car already? is there a big improvement over stock power?
does jb4 recognize that there is an exhaust system installed?
nice upgrades!
It feels pretty good, but I still need to dyno the car to see the actual power numbers. The JB4 doesn't "recognize" that the exhaust is installed, but with the exhaust I'm able to run a more aggressive MAP (2) with peak boost around 23psi.
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Driver, Ratchet Head Racing #93 BMW Z4
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2014 Glacier Silver Z4 28i M Sport - See the build thread: http://e89.zpost.com/forums/showthread.php?t=950367
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