so i finally put on the lts....and it ran good for two days but now ***** goin crazy....i left the cats on but ran pipes back to the mufflers and dumped them b4 the axle....the truck randomly starts idling really bad...it feels like its misfiring or something....i havent tuned it yet so i was wondering if anyone else has had this problem....its an 07 classic....5.3....do yall think if i get it tuned my problem will be fixed??? help is appreciated...

 

correction: i left the cats OFF.....

 

Check for burnt wires or maybe a loose spark plug.

 

yea thnx dude.....two of the spark plug boots r touching the header....thinkin thats what's fckn **** up LOL so tomorow I am gonna look into buying some msd wires....hopefully that fixes the problem plus I still need to get it tuned