I just bought a GN. I have had it for a few weeks and right away the MAF sensor went bad. Actually, on my way home from the guy I bought it from. I replaced it and car is back to normal. Then my inlet pipe hose came off. I put it back on and ordered new hoses. Car runs good but I am not sure if it is running great because it is my first GN. The guy I bought it from said it had only been driven about 100 miles in the past 18 months. So my question is, can a GN become "untuned"? Should I bring this car to someone who know what they are doing and have things adjusted? It has a Scanmaster but I have no idea how to use it. I live in MA and the guy I bought it from said that Russ Merrit did all of the work and tuning of the car. I have never met him but heard he is like God when it comes to these cars. Maybe I should bring it to him and have it freshened up. What do you guys think?