well I just got a used DG pipe for my indy trail today, gunna put it on in school tomarow and I was wondering what everyone thinks I will need to do for the jetting. I was told by the person who gave me the pipe that it would run okay with no jetting changes, but for the best performance he said to go up one size on the mains and put the needle up one notch. I am going to put it on and watch plug color, if it looks okay, I will run it, if not, I will pull it back off and wait till I get some jets. Anybody have any suggestions? also wondering if I have to take off the carbs to change jets, or if I can take out the drain plug on the bowl and access it from the bottom?