i just put on a CT pipe and did the jetting on my yfz 450..runs very stroung but when it gets up in the high RPMS i get some hesitation like it is not getting enough gas..what do you think is the jetting not right or is that whats it like when you hit the rev limiter?

 

I would call CT, they are very helpfull.

How do you like the pipe?

 

Thats what the rev limiter sounds/feels like but if your not sure then I would call like witti said. I'm sure they will be able to help.

 

run it full throttle all the way through the gears and hold it full for about 300 yds then kill it with the kill switch right as your hitting the break. After you've done that pull the plug and check what color it is. If it's tan the jetting is good, if it's black it's rich, and if it's white its lean. That would be the best way to get a sure answer as if it's running lean or rich. Also a good way to check is when you've got it revved out but it sounds like it's not revving out all the way and just kinda babbles and tries to die then it's lean. If itrevs out good but snaps and pops then it's rich. Hope this helps you with that!! Good luck! [img]i/expressions/face-icon-small-smile.gif[/img]

 

i love the pipe..nice set up..lots more low and mid range torque...but CT does not give you a exhaust clamp ..so i had to make one with a high temp silicone hose and some clamps from home depot..