I have a 2009 Street Glide with a 103 kit and some slip-ons- the dealer just did a $100 down-load. I'm thinking of doing the V&H dresser pipes and the Monster Ovals. Same Harley dealer says I can simply do another $100 download. However, every other dealer/shop says I must/should do a race tuner and then dyno tune it. Who is more right???????