Chipwerke piggyback chip tuning system - get up to 33% more HP & TQ - forBMW Turbo Gasoline Engines (N13, N20, B48, N54, N55, B58, S55, N63, S63 models)

I have this installed on my 2008 535xi Wagon with the N54.... I was looking at MHD and the JB .... I chose this over both for a few reasons ease of install it took less then 20 minutes, it cannot be seen by dealers to void warranty and it's a fraction of the cost.... Chipwerke customer service is great also they told me if I get a M4 they can reprogram my existing chip for the new car !!! Thanks Chipwerke !!!