the posts here are pretty accurate on what will be needed for "safe" operation. I would venture to say the most important thing is to ensure you are running RICH. By running rich you will just about avoid detonation. Sure you will lose a few HP by doing so, but I'd rather lose a few HP than quite a few $'s. Injectors, APEXi S-AFC will help with fuel. If you plan to run alot of boost, you WILL need to replace the fuel pump. Sorry guys who support FMU's, but mine is soon to be a lawn ornament. It has also been debated about the APEXi S-AFC working or not working and I can say this, mine works, simply stated.