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      09-16-2023, 06:17 PM   #1
Mason_Shopperly
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Drives: 2011 E90 BMW 335i X-Drive N55
Join Date: Feb 2020
Location: Calgary Alberta

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Recently found a nice spec in an E89 Z4 35is with the N54 and the DCT and a single turbo conversion in mind.

I like what I’m hearing about Speedtech Kits but I’m trying understand the differences in the engine bay of an N54 Z4 as opposed to the 135i and 335i.

I have read about needing custom downpipe to connect up to the stock z4 exhaust, relocation of coolant tank, relocation of water pump, relocation of radiator overflow bottle …

top-mount vs bottom-mount,

*Located in Canada
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      09-17-2023, 10:14 AM   #2
B21
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Drives: E89 Atacama Yellow 35is
Join Date: May 2022
Location: Scotland..God’s own country

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Will be interested to see how it goes..do I read correctly these are twin scroll designs ?
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Much modified 2011 Atacama Yellow 35is…previously a much modified 2012 Atacama Yellow 20i MSport
Change history here… https://www.dropbox.com/s/8h1vabklgz...0List.pdf?dl=0
Build thread here… https://z4-forum.com/forum/viewtopic.php?t=131886
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