Do you get timing pull when you are driving normally, as this would replicate a stock map?
Sorry to bring this back to life.
I saw timing pulls on my stage 1 using Iridiums. I don't think the 1.8T like Iridiums
This is how the CF's feel too.
I would bet the surging is more CF related than TIP collapse.
I've yet to see cast iron proof that this does happen, well apart from Forge's video.
What air intake system are you using and how old/clean is it?