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Old 01-16-2013, 07:49 AM
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tim330i tim330i is offline Founder
Location: SF
Join Date: Dec 2001
Posts: 8,688
Mein Auto: Ti Silver 03 M3
I've driven the Turner F30 335i before and after the Hartge power module and it does make a noticeable difference! Hartge and TMS have great reputations I can't see them building or selling something that hasn't been thoroughly tested.

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