My Rocket turning into a Harley ,,,,,,help,,,,

mexican said:

It all started while i was "standing on the corner in Winslow Arizona", i noticed the rocket was loosing power and at a point it wouldn't even idle right, idle droped to about 400rpm, at 70mph it would not accelerate worth a darn, engine revs fine but no torque, i did some comparisons at lower speeds and different rpms and i found out that on 5th gear at 3000 rpm when i crank it only noise comes out of the mufflers but no power, at lower speeds and higher rpm it does it also, sometimes it accelerates normal but 70 per cent of the time it just floats, i can get to 120mph but i have to take my time,,,,feels like only 1/8th of the trothle delivers power and the rest delivers just noise...no funny engine noises, no check engine lights, Hans adjusted the tune and that helped a little but it is far from normal, any ideas????

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