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      11-09-2011, 11:06 PM   #1
King z4
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Drives: BMW Z4 E89 twin turbo
Join Date: Nov 2011
Location: Sydney Australia

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Upgrading turbos on the Z4

Hi,
Im thinking of upgrading my turbos by increasing the size of the turbine and compressor wheel. Has anyone had this modification done on their Z4. What could be the problems?
The 135 and the 335 community have recommended that I go with RB Turbo since they have experience in doing this modification and the other BMW's havnt had any issues.
To compliment the turbos I will be getting a stett intercooler and downpipes and hoping my car will pull 500hp.
Also can anybody recommend a tune. A few people have recommended JB4 any pros and cons?
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Kraftwerk Flash tune, Supersprint Cat Back exhaust, Gruppe M Cold air Intake, KW Variant 3 Suspension, AC Schnitzer Type VIII Alloy Wheels
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