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Old 08-09-2012, 08:22 AM
tim330i's Avatar
tim330i tim330i is offline Founder
Location: SF
Join Date: Dec 2001
Posts: 15,589
Mein Auto: Ti Silver 03 M3
I drove TMS's F30 335i with the Hartge module and it does make a difference, a big one. It really wakes up the car, it was a very obvious difference in performance. I would think you'd see the same increase on the 535 as well.

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