I very nearly pressed the 'go' button on the Procede chip. I may yet do it...in fact, I very likely will.
The Procede alone pushes bhp to 380 I think and their exhaust etc adds the rest. I'm thinking Procede and Eisenmann exhaust for 380bhp+
I'd prefer DMS to crack the ECU though as I found their remap on my 330cd brilliant.
1. BMW E85 Z4M 2008
2. BMW E91 325i SE Auto 2007
BMW E92 335i SE Manual 2006