[pbonsalb]

That is fast. You can’t add any more boost with that tune and the tune is made for 93 so more octane probably won’t help much. It will make performance more consistent, such as not dropping power on a hot day.

I would remove the charcoal filters if you have them in your air boxes, buy the Dinan turbo inlet pipes, and swap to catless secondary downpipes. Leave it at that — a tiny bit less restriction into the motor and a tiny bit less restriction out.