Thread: E89 Tuning
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      10-21-2009, 04:32 AM   #2
Rubber Ducky
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Drives: 2020 M340i
Join Date: Oct 2006
Location: Cocoa Beach FL

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Dinan is your best bet. No tunes 'void' the warrantee, but the repair of tune-caused damage will not be warrantee-covered. It's a legal matter, but ... you break it by screwing with the innards, you fix it.

Dinan, however, has its own warrantee that covers tune-caused damage denied under the BMW policy, same months and miles. Excellent dealer network, great tune (30K miles in an E93 335i with Stage One tune).

Not yet available for the N54 in the E89 but 'we're working on it' is the quote I got from a Dinan guy on the fone some weeks ago.

Dinan actually recodes the firmware in the ECU. Most of the other tuners trick the firmware by intercepting signals and changing them. All will give you a lot more power than you can ever use on real roads.
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