ok ever scence i put my programmer on my truck when it shift's really hard the belt chrips why does it do i know i need i new will a new belt solve this prob, and today a mustang wanted to race and i did and hear latley its been hitting the rev limiter really bad

 

A Goodyear Gatorback belt will solve your problems. Auto Zone, Advanced and many others carry them.
What tuner are you running?

 

Im using the micro tuner by superchip.

 

Are we talking about a truck or a Moped ? It would help to what vehicle you have

Oh, AND motor

 

its a 2001 ford screw with a 4.6 and its always does it from 1-2 and it hits the rev limit really hard

 

well i guess i will just replace the belt and see what happems