Right now we are running a special on intake valve cleaning: $349 for R56 and later cars. Forget the Seafoam, it won't really clean the sludge build-up on your intake valves. Only a walnut shell media blasting will do the job. If you haven't done this and you have 40k or more on your car, you will notice a huge difference in performance and drivability. Drop us a line if you have questions! Before: And after: