if you use a full dep upgrade your jets change your cogs and chain combo plus mess about with your air box double check your earth make sure you earth the wire to the battery earth located near the right foot peg just follow the black cable negative from your battery with a decent thickness cable as a crap connection will reduce power or it will be intermitant if you do all the above you can touch a 100 with a tail wind but you will get about 50 to a tank plus stock up on piston rings as you will start to get through them alot mx race teams rebuild there engines after every race so run the bikes at full power and hard if you have a true earth on your standard bike then you will notice the difference straight away it will wheelie even if its the only thing you do to mod it about 20bhp you can then get another 17 extra if you do the above the most you can get out of it is 37 as for a dealer not touching it a yam one yes but independent dealers yes if all the work has been done correctly and its not been thrashed they can sell a full power bike easy than a restricted bike if you where a 17 year old with a pocket full of money what would you go for as for the cable your looking for behind the clock follow the cables out 3 of into a white connector then there will be four on the other end the green and black one is the one your looking for that would run to the rev counter if there was one earth it securing any cable with zip ties away from the exhaust and thats it hold on tight