You cant get rid of the speed limiter per se. You still have to input a number in the ECU something like 330 or any number. The top speed does not work if you use 7th gear to attain it. You need to use 6th gear to bring it past 270+ then shift to 7th. At least thats how it worked for me when i hit 310+.
2008 E92 ///M3 Alpine White M-DCT| Novillo-Black Interior| Carbon Fibre Roof| Premium Sound System| EDC| 19's Advan RS w/ Michelin PS2 Cups| iPod| GruppeM Air Intake| GruppeM Steel Braided Lines|Ferodo DS2500 Pads| Akrapovic Full Header-Back Titanium Exhaust| 6000K Philips D1S| 3M Tints|