C7 z06 poor idle

Is there anyone that can help me get my car to idle a little better? I ordered a wideband but need to be able to drive the car to get the alignment done. I put in 2" Texas long tube headers without cats and a Haltec cold air intake. Very hard to keep it running. Also. looking for the best way to find tuning info on the car. When I type c7 z06 anything nothing comes up. Is there a better way of navigating through the forums without having to spend days every time you have a question? Is there a dedicated c7 section?

Probably have exhaust leaks and fuel trim maxed out

Use OEM gaskets for the headers

Did use them. Thanks.

Did have one of the collector clamps loose. Thanks.