Hello everyone, this is my first ever post on here. I currently have an LS3 that is tuned to utilise DFCO to save fuel upon deceleration. It was working totally fine, but recently I installed extractor headers and high-flow cats, and now when I am decelerating the fuel cuts in and out seemingly randomly every few seconds without me editing anything in the DFCO section of the tune. The amount of time is inconsistent, it's just random. Even though it isn't a big issue, I'm just curious as to what may have caused this and if anybody has an idea? The only thing that I can think has changed is the O2 sensors are in a new environment, but I really have no idea. Thoughts? Thanks.