I just had a CFR pipe put on my 06 vrscse2. The sound is awesome!! The mechanic said they put a race download in it and it ran like crap. They put the stock map back in it and it ran good. I feel that it has more at the botttom but has lost some in the mid-range. I guess my question is should I go with the race tuner/dyno, or buy a fuel pak of some kind? Will it thurt the bike if I dont tune it?