I'm just wondering what size injectors, and what fuel system I should use if I plan on pushing 650+ hp at the flywheel? D1 compressor at 18psi. Maybe a 100hp shot later down the road.

 

There is actually a formula for Calculating the size on N/A cars but it wont work with a supercharger because the BSFC changes. I would think 36-42 lb. hour with an adjustable fuel pressure regulator for fine tuning and a darn good fuel pump is probibly what you will need, but do some more research. If you can find CJ he was running a D-1 with 14 PSI and I think 36lb. /hour injectors.