hey just got done installing some LT headers today on the T/A. It is running HORRIBLE!!! i dont have one of the 02 sensors hooked up yet, and its just running out of the y-pipe till i get my exhaust cut a little, but that shouldn't make it run this bad... we replaced the spark plugs, could it run this bad if we didnt get them tightened all the way down in their holes?? we got all of them pretty tight (not super super tight though)... idk, HELP!

 

I would defintily get that 02 hooked up then start troubleshooting

 

If you don't have both front o2 sensors installed, it will run like crap.

 

ok well thats better than trying to mess with plugs again.. so lets hope thats it! thanks guys