From what I've been reading ... I can do a stage one drilling on the pipes of my 07 and probable not have to do more than maybe richen the mixture a little w/ my air-fuel screw ... right?

For stage one you probably won't have to touch a thing.

I did stage 3 and didn't do anything. Runs the same.

Thanks, that's what I thought. I like when I can improve things for little effort and no cost.

I forgot to mention mine is FI, but I would think it shouldn't make any difference for a carb.

Just out of curiousity...

Had my tire changed a couple weeks ago, was time for some new skin after 7k on the rear. After it was all done the guy at the dealership (which is the only yamaha dealership around that actually know much about what they are selling) asked me if I rejetted after I switched my exhaust. I have the Cobra slash-cut slip ons on the bike. I told him I didn't change my intake at all, only added the slip ons. He told me a lot of guys make this mistake and he sees bikes come back with burnt up motors from running to lean after changing out the pipes. Basically hes saying that changing the pipes without rejetting is making the bike run lean which makes it run too hot and burns up the motor?

Is there any validity to this statement or is he mistaken? Have run my bike with stage three for over 5k miles and have been running the slashcuts for about 1k never seem to have had a problem with mixture. I have never rejetted or touched the pms going by what I have read here I'm safe, right? Just looking for some peace of mind.

Yamikaze wrote:
(which is the only yamaha dealership around that actually know much about what they are selling)

He told me a lot of guys make this mistake and he sees bikes come back with burnt up motors from running to lean after changing out the pipes. Basically hes saying that changing the pipes without rejetting is making the bike run lean which makes it run too hot and burns up the motor

First statement - I disagree based on the second statement.

For the second statement - If he really believes that he doesn't know squat! I would be surprised if he has ever seen one bike with a damaged motor from having only the pipes changed with nothing else being touched. It just doesn't make that much difference. And if our bikes are so lean as to cause damage they run like fried crap and you wouldn't ride it far enough to do any harm anyway. Also, dealers love to make extra money doing pointless jetting jobs. Especially with the economy the way it is.

Musky is right better watch out for that dealer.

Yamikaze wrote:
He told me a lot of guys make this mistake and he sees bikes come back with burnt up motors from running to lean after changing out the pipes. Basically hes saying that changing the pipes without rejetting is making the bike run lean which makes it run too hot and burns up the motor?

I agree with Musky's statement.

YOU CANNOT RUN THIS CARB LEAN ENOUGH TO CAUSE DAMAGE WITHOUT IT RUNNING BADLY.

The same unfortunately does not apply if you run too rich.

YOU WILL CAUSE PROBLEMS IF YOU RUN THE CARB RICH.

Doc

I switched to slashcuts over a year ago and didn't touch anything in the carb. You should only need to rejet if you change the intake (larger air filter, larger carb, etc.). Your dealer, like many, is just trying to get you to spend money for no reason.