Let me know when you want to go to the mile. I will wrench for you.
Detonation as Neville said is your worst problem now. It can be subtle, but very quickly escalate into a full blown problem; better known as a broken ring land. Higher octane rated fuels are the cure. I would suggest alcohol except you have little room left with your current injectors to up the delivery rate. Water injection can work wonders as well.
If Scar will be blown, you will need to learn to use a detonation sensor if you haven't already used one, so you might consider using one now on Mufasa.