The constant smell that will eminate from your tailpipe without cats is something that most people, myself included, do not enjoy. Even with two cats in the B-pipes, long tube headers produce pretty noxious gases that are hard to live with on cold startup.
If you run cats in the B-pipes you can forfiet the use of the 02 simulators and allow the trucks ECU to do its job and actually monitor the 02's. I am doing this and my truck not only runs like a raped ape, but has not shown a code since I installed the headers in June.
If you run cats in the B-pipes you can forfiet the use of the 02 simulators and allow the trucks ECU to do its job and actually monitor the 02's. I am doing this and my truck not only runs like a raped ape, but has not shown a code since I installed the headers in June.