[pobit]

The LTR needle and the CCK have the same straight section diameter. The LTR needle has a longer straight section diameter length so when you run the LTR needle in the #3 clip it is leaner at off idle than the CCK in the #3 clip. That is the point of the CCK needle. At idle, it is the same diameter as the LTR needle so you get a clean idle. As you open the throttle, the CCK enters the taper sooner making it richer giving the motor a more torqy feel that is easier to control. At about 1/2 throttle the CCK starts to become leaner than the LTR needle and this helps the 300 rev out better. The N3EG does the same thing but is a multi taper so it gives the motor a MX hit in the mid range.

As for the two Maps, The leaner the jetting is, the bigger the differance is in the two maps. With rich jetting it is hard to feel any differance between the two. With lean jetting, there is a big differance. I jet for maximum power in the MX mode and then use the rain mode to mellow out the power for the tight stuff. Dave