I finally decided to go the larger injector route. I decided on 550's but not Bosch or any of the others mentioned on the forum. Also, I learned a few things about injectors that I did not know before. Specifically, how much more fuel they can inject at higher fuel pressures. Injectors are rated at 3 bar so our std 450's probably flow close to 600 at the std 58 psi that our cars run at and about 640 at 66 psi several guys have settled on after a host of mods. The 550's flow around 700 at 58 psi and over 750 at 66 psi. What I have decided on is a flow matched set of BlackOps 550's that have a proprietary operation that provides a more atomized stream of fuel to the cylinders and have stainless steel parts. They can easily provide all the fuel that I might ever need at a duty cycle around 70%.