The thing is, unless you're planning on high dollar customizations to the common rail system, there's not really a point in gigantic injectors, since modest size injectors and a box are already able to push the fuel system to its limits. The only reason for bigger injectors would be if you didn't want to run a box, but then you're stuck needing a boost fooler at least, so what's the point? I guess you could run a mild pressure box. So far, DonM has made almost 600HP with twins, box, and a set of +30HP injectors, more than anyone I've heard about with a stock CP3 system, even those running 100HP+ sticks. Even if you like the way injectors respond compared to a box, I don't see the need to go over a 100HP injector or so. Of course IMHO, YMMV, yada yada. .