[MacDubois]

I can't add anything new, but stand alone is the way to go.

And ceramic coated exhaust is the way to go, except that at the temps you're running I can see you frying your turbo, so you would need to ceramic coat the exhaust turbine, and upgrade to a ball bearing turbo, capable of handling the heat(if thats not what you're running already). But heat=energy...sort of, so if you stop losing it to your engine bay, you'll probably produce more power.

But the extra fuel injectors should help the temps, if you increase the AFR, and just because your fuel injectors can run to 150psi doesn't mean they should...the flow patterns could be completely screwed at those pressures...or they could be better, but I doubt that, I just don't know, but there is a reason most injectors aren't run that high.

And ideally a custom fuel rail designed to take advantage of twin injectors would be good, but thats physics way beyond anyone but an extremely accomplished engineer with a flow bench could comprehend.

Oh, and water/methanol injection is rediculously effective for something so cheap.

Oh and get about 6 oil coolers and three more radiators. Okay that might be silly, but the 996 turbo runs 3 radiators, and most race cars with power far below yours have 2 oil coolers (I assume you have a beefy oil cooler and a really nice radiator already, so ignore this)