So I have a 2011 R56 with a N18 and 90000 on the clock. So far pretty stock other than a K& N air filter, and magnaflow muffler. I want to do a NM ecu tune, obviously just stage 1. How well does the NM tune work? With 90000 on the clock will the tune hurt my engine? I do autox the car and I need the extra torque that will come with the tune. I will also install the Sprint device that helps with throttle response time. I am considerint NM over the other tuners mainly due to price and the fact that I am in California and they are closer to me.