Took my cat off gutted it and put a glasspak on and as soon as i left the muffler shop the truck seemed really slugish. Is this normal. Will the computer adjust itself since no it has less back pressure. When i got home about 30 mins of driving it seemed like it wasnt as bad so hopefully driving it a few more times it will go back to the way it was. Has this happened to anybody else.

 

Not me but my brother inlaw did the same thing and it went back after a couple hours..

 

is the truck carbed or injected? Either way you have made a change and you need to tune the carb or let the computer adjust.

 

injected. its running better now plus it seemed to be a lil more responsive when you hit the gas. have to fill up today and hopefully i will pick up a mile or two with gas mileage. didnt do this for the performance just wanted a lil sound and while my buddy cut my muffler off he shined a light on my converter and it was half way clogged so he had one already gutted out and we used it