That reminds me of a funny story. We had squirels that were getting up in the attic. I couldn't find where they were getting in, so I got a good pellet gun and when I would get home from work, I would hang out in the back yard and take out everyone of those little ba$tards that I could find. I funny thing was that we had neighborhood cats that were using our back yard as their cat box. I come in from a long night of "squirel hunt" and my wife asks me if I'm going to use the gun on the cats too. HUH? I said, "NO! Of course not." She ask why and I explained that if I were to shoot them it would be a head shot and it would drop them where they were. With shock she said, "IT WOULD KILL THEM?". Yeah, it would! I said proudly. Then she explained in a sad voice that she thought the gun just sort of stunned them so they wouldn't come back. I said, "well, with my way we are sure they won't come back!"
So, I just jacked my own thread. Ha.
Back to the bird. I will try new 02 sensors first and then cats. If that doesn't do it, then new cats it will be.
I thought performancepeddler had a good high flow kit or something like that. Something that would bolt right up. Has anyone used it?