If you have a 550i or X5 M Dinan will give you free parts in exchange for using your car as development. Hey free parts are free parts:

Click here to enlarge Originally Posted by Dinan Engineering
F10 550 2011 Owners, it is your turn for FREE Dinan High Performance Software and High Performance Exhaust and maybe more. Same deal as yesterday you will need to live without your car for 2+ weeks and live near Morgan Hill, CA or can ship the car here. If you want to be the proud owner of the first DINAN F10 550 email info@dinancars.com!

Do you own an X5 M or E70 X5 2007+? Would you like FREE Dinan High Performance Software and High Performance Exhaust and maybe more? Do you live near Morgan Hill, CA or can ship the car here? Can you live without your car for 2+ weeks? IF you answered YES to ALL of these questions please email info@dinancars.com!