My ZL has a real bad bog right after clutch engagement. She engages at 4800 RPM which is right but the sled doesn't pull very well until about 7 or 8 MPH. From here on, You really have to hold on. The dam track won't hardly spin from a dead stop. Any help would be appreciated or if someone else has the same problem, I would like to hear from you. Thanks

how is your belt deflection.is your throttle position switch working properly, the switch on the handle bar that the throttle lever touches, not the position indicator on the throttle body!