I stacked my Predator and my new Edge EZ box the other day just for fun. The results where amazing!!! After playing with it for just short bursts I decided to see whet it would do for a full run. I had a very noticeable single "cough" in 3rd gear that scared me enough to take the Pedator back off. Any ideas what it could have been?

Most likely a turbo bark. That will happen time to time with certain stack combos.

It might "learn" it out, it might not. I just got an EZ to test, and will try various stacks.