Smoking out the tail pipes

Ok well i just got my LT's installed and everything is good. Now i have a very questions. First the egr line that used to go the the catalitic converters is now wide open should i cap it or jsut leave it open in the engine bay, there is a decent amount of air flowing through it. Second i got everything hooked up and when i start teh car it has a real lopey idle but it still holds a consistent idle at 800 to 900 which is what it was at before. Is this a problem? Possiblely a vac line i didnt connect? Would that make it like that. Also when i start up my car its smoking out of the tail pipes with the smell of gasoline. The exhaust also comes out in spurts which i think it should be doing. I need everyones feedback here. I am at school all week and can only come home on teh weekends to fix problems.. I probably wont be able to fix the this weekends but i can try tonight if people get back to me. Thanks for all your help

also the h pipe is an off road h pipe

thanks

I used the same O2 sensors but with an extenders. I did not mark all of the vacum lines but it was pretty much that vac line can only go there because thats the only place it reached. I did not pull codes yet. How do i go about doing that? Also its a rough idle with smoking but if the car is driven up in the rpms it drives normal then when it gets back down to an idle it has teh same problem which makes me bleieve its a vac leak somewhere. i still have to torque down the intake mani so there make be a leak there aswell. Would that cause the same problems? Thanks

anyone else?

I pulled the codes today. The codes that showed up were 23 34 and 67. Any feedback to what i could do to fix these?
thanks