This is what i have just bought to go with my Evolve Exaust and its supposed to be the best by far!
ANd if you have to put the car to bmw you can always put it back to std and then re-install it when you get your car back!!
Originally Posted by ss134
With a remote tune like the 'evolve' tune you can switch between the tune and the factory ECU settings - if you have a problem then switch back to the factory settings before taking it to the garage. All decent tuning companies will sell their tunes with their own warranty as well which they will honour in the rare case of a manufacturer declining a warranty claim.