Am I being scammed????

[legend29]

I have a 2008 Kinroad,it was horribly slow when i got it so i asked the dealer.He recommended a 100cc big bore kit install, that got me to 40 flat land, then he said get racing exhaust & header,and performance air filter.It's done and still same speed 40 flat land 30 up hill.I also changed fuel lines & vacuum to clear ones so i could see if it was clogged. I just ordered performance CDI and ignition coil.All the people i talked to said i should get 50-55 atleast.Do you think I'm getting taken for a ride and he is not doing what he says he is.I don't know anything about cars or bikes mechanically.I got about 600 in the parts and labor. If all is legit what can i do to get to 50 on flat land ?