My truck has plenty of torque when driving and taking off but seems sluggish when going past i have to keep stepping down on the gas to get full acceleration to drive faster. No check engine lights are on shifts just fine so i did a spark plug tune up and it made a small difference but i think my catalytic converter could be the issue could i just cut it off would that affect the sensor? I need help.

 

Please provide your vehicle specifics so we know what we are dealing with.

 

2002 Dodge Ram 1500 5.9L quad cab

 

Pull the front O2 sensor out of the exhaust. (yes, physically remove it.) Go for a drive. Any better? If it is, then yeah, the cat is clogging up.