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      08-22-2012, 06:38 PM   #16
joe@ptech
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Drives: 15 M3|04 GTS4 M3|74 2002tii
Join Date: Oct 2010
Location: Bay Area, CA

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We just did the same upgrade to our shop 550i. I know the Dinan parts are very expensive, but they work well and bring this car more in line with the F10 M5. But I agree and am surprised no other tuners are getting into this car. The Dinan upgrades have transformed the car and as stated, remains incredibly smooth.

I heard a rumor that Dinan will be offering turbo upgrades along with Intake and oil cooler upgrades.