Our passion in this business is driven by BMW’s history of producing the ultimate driving machine and we love helping to keep vintage BMW’s on the road. We offer a full range of restoration and modification services that include engine swaps, manual transmission swaps, custom fabricated modifications, and much more. Because restoration and modifications vary greatly based on year, make, and customer need a direct consult is required to provide a rough estimate of cost for any of these services.


Kadunza offers in house tuning and coding capability for most models. Our performance tune products are provided by Markert Motorworks. Custom module coding for adding and/or removing comfort options and module replacement and retrofitting is also available for most vehicles as well as complete vehicle coding updates. Cost is dependent on the coding requested, if installation of a specific module is required, and time required to complete those updates. Available options are also dependent on the package your vehicle was fitted with from the factory..


Kadunza is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Kadunza (865) 246-6569 if you have any issues in accessing any area of our website.