I have '02 mcs and today I had to drive my car maybe 15 miles cutoff muffler at the axles, and now with exhaust fixed, its stuttering under any accel, and random rough idle. Is this related? Plugs? etc? Its bumming me out I gotta get it figured out. Any help is appreciated thanks

 

Get the car hooked up to a proper scan tool ie, Autologic, Auto Enginuity, something of dealer level quality, and retrieve the stored codes. Without more of a lead on what is happening there are too many variables to point you in any one direction.